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This is a continuously updated archive of the Aroid-L mailing list in a forum format - not an actual Forum. If you want to post, you will still need to register for the Aroid-L mailing list and send your postings by e-mail for moderation in the normal way.
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Dieffenbachia hoffmannii photo?
|
From: "Carol McCarthy" <Carol.McCarthy at mail.wvu.edu>
on 2010.02.26 at 16:53:57(20671)
Hello List,
Can anyone point me to a good photo of Dieffenbachia hoffmannii? I
would like to see the petioles with the leaves, if possible. I am trying
to double check an ID.
Thanks a lot for any help.
Carol.
| +More |
Carol McCarthy
Greenhouse Manager
Biology Department
West Virginia University
PO Box 6057
53 Campus Drive
Morgantown, WV 26506
304-293-5201 ext 31477
--=__PartEDC72CB5.0__
_______________________________________________
Aroid-L mailing list
Aroid-L@www.gizmoworks.com
http://www.gizmoworks.com/mailman/listinfo/aroid-l
--==============E32560698082159142==--
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From: "Carol McCarthy" <Carol.McCarthy at mail.wvu.edu> on 2010.02.26 at 16:53:57(20672)
Hello List,
Can anyone point me to a good photo of Dieffenbachia hoffmannii? I would like to see the petioles with the leaves, if possible. I am trying to double check an ID.
Thanks a lot for any help.
Carol.
| HTML +More | |
Carol McCarthy
Greenhouse Manager
Biology Department
West Virginia University
PO Box 6057
53 Campus Drive
Morgantown, WV 26506
304-293-5201 ext 31477
--=__PartEDC72CB5.0__=----==============E32560698082159142= |
|
From: ExoticRainforest <Steve at ExoticRainforest.com>
on 2010.02.27 at 17:54:27(20675)
_______________________________________________
Aroid-L mailing list
Aroid-L@www.gizmoworks.com
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--------------020004030409060608070503--
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From: ExoticRainforest <Steve at ExoticRainforest.com> on 2010.02.27 at 17:54:27(20676)
(File Type Not Recognized: attachments/101213210624-1.png)
According to all the Kew sites aswell as TROPICOS there is no such species. Can you tell us the sourceof the name?
Steve
| HTML +More | |
www.ExoticRainforest.com
On 2/26/2010 10:53, Carol McCarthy wrote:
Hello List,
Can anyone point me to a good photo of Dieffenbachiahoffmannii? I would like to see the petioles with the leaves, ifpossible. I am trying to double check an ID.
Thanks a lot for any help.
Carol.
Carol McCarthy
Greenhouse Manager
Biology Department
West Virginia University
PO Box 6057
53 Campus Drive
Morgantown, WV 26506
304-293-5201 ext 31477
_______________________________________________Aroid-L mailing listAroid-L@www.gizmoworks.comhttp://www.gizmoworks.com/mailman/listinfo/aroid-l
--------------070501080709000709090708 |
|
From: "John" <criswick at spiceisle.com>
on 2010.03.01 at 19:19:59(20680)
I cannot give a source for the name Dieffenbachia hoffmannii but I have in
the 60s and 70s grown this Dieffenbachia, in fact it was a favourite of
mine. The name is no longer valid, if it ever was, but D. 'Exotica' or
'arvida' may be a mutation of it, whatever it is. Both are said by Graf to
be from Costa Rica.
The accompanying illustration may perhaps answer questions about markings on
stem and petiole.
| +More | |
John.
_____
From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com]
On Behalf Of ExoticRainforest
Sent: Saturday, February 27, 2010 1:54 PM
To: Discussion of aroids
Subject: Re: [Aroid-l] Dieffenbachia hoffmannii photo?
According to all the Kew sites as well as TROPICOS there is no such species.
Can you tell us the source of the name?
Steve
www.ExoticRainforest.com
On 2/26/2010 10:53, Carol McCarthy wrote:
Hello List,
Can anyone point me to a good photo of Dieffenbachia hoffmannii? I
would like to see the petioles with the leaves, if possible. I am trying to
double check an ID.
Thanks a lot for any help.
Carol.
Carol McCarthy
Greenhouse Manager
Biology Department
West Virginia University
PO Box 6057
53 Campus Drive
Morgantown, WV 26506
304-293-5201 ext 31477
_______________________________________________
Aroid-L mailing list
Aroid-L@www.gizmoworks.com
http://www.gizmoworks.com/mailman/listinfo/aroid-l
------=_NextPart_002_002C_01CAB952.AACD0460
_______________________________________________
Aroid-L mailing list
Aroid-L@www.gizmoworks.com
http://www.gizmoworks.com/mailman/listinfo/aroid-l
------=_NextPart_000_002A_01CAB952.AACD0460--
|
|
From: "John" <criswick at spiceisle.com> on 2010.03.01 at 19:19:59(20681)
I cannot give a sourcefor the name Dieffenbachia hoffmannii but I have in the 60s and 70s grown thisDieffenbachia, in fact it was a favourite of mine. The name is no longer valid,if it ever was, but D. ‘Exotica’ or ‘arvida’ may be amutation of it, whatever it is. Both are said by Graf to be from Costa Rica.
The accompanyingillustration may perhaps answer questions about markings on stem and petiole.
John.
| HTML +More |
From: aroid-l-bounces@gizmoworks.com[mailto:aroid-l-bounces@gizmoworks.com] OnBehalf Of ExoticRainforest
Sent: Saturday, February 27, 20101:54 PM
To: Discussion of aroids
Subject: Re: [Aroid-l] Dieffenbachiahoffmannii photo?
According to all the Kewsites as well as TROPICOS there is no such species. Can you tell us thesource of the name?
Steve
www.ExoticRainforest.com
On 2/26/2010 10:53, Carol McCarthy wrote:
Hello List,
Can anyone point me to a goodphoto of Dieffenbachia hoffmannii? I would like to see the petioles withthe leaves, if possible. I am trying to double check an ID.
Thanks a lot for any help.
Carol.
Carol McCarthy
Greenhouse Manager
Biology Department
West Virginia University
PO Box 6057
53 Campus Drive
Morgantown, WV 26506
304-293-5201 ext 31477
_______________________________________________
Aroid-L mailing list
Aroid-L@www.gizmoworks.com
http://www.gizmoworks.com/mailman/listinfo/aroid-l
------=_NextPart_002_002C_01CAB952.AACD0460--------=_NextPart_001_002B_01CAB952.AACD0460 |
|
From: "Carol McCarthy" <Carol.McCarthy at mail.wvu.edu>
on 2010.03.02 at 14:10:25(20684)
Hello Steve, John, Conrad and anyone else reading along,
I checked my database yesterday, I got the name from the same
source John quotes; A.B. Graph's Exotica; page 172 of Edition 9 to be
more exact. I will also note that the plant has been in one of two
university greenhouse here at WVU for at least 15 years. From what I
know of the collections, I do not believe that this material was
collected straight from habitat even back then. Whether it was bought,
traded for or a gift I do not have any records to enlighten me. The two
professors who might know are both long retired.
We have been doing an inventory update of the greenhouse
collections and working on correcting and updating questionable names
along the way. I guess for now, this one will stay questionable.
This Dieffenbachia grows very slowly and has a different, deeper
green than most. As the picture John attached shows a little, the
petioles show stripes and or dots of lighter colors on the deep green
ground color. Currently the plant is at another greenhouse across
campus, I will try to get a picture of this plant, whatever it is, in
the near future and post it. Since we have established that D.
hoffmannii is not a valid name does anyone have any suggestions as to a
correct identity?
Thanks to a great group for any help at all.
Carol.
| +More |
Carol McCarthy
Greenhouse Manager
Biology Department
West Virginia University
PO Box 6057
53 Campus Drive
Morgantown, WV 26506
304-293-5201 ext 31477
>>> "John" 3/1/2010 2:19 PM >>>
I cannot give a source for the name Dieffenbachia hoffmannii but I have
in the 60s and 70s grown this Dieffenbachia, in fact it was a favourite
of mine. The name is no longer valid, if it ever was, but D. ââ‚ ËœExoticaââ‚ â„
or ââ‚ Ëœarvidaââ‚ â„ may be a mutation of it, whatever it is. Both are said by
Graf to be from Costa Rica.
The accompanying illustration may perhaps answer questions about
markings on stem and petiole.
John.
--=__PartF3D93841.0__
_______________________________________________
Aroid-L mailing list
Aroid-L@www.gizmoworks.com
http://www.gizmoworks.com/mailman/listinfo/aroid-l
--==============21853508003158028==--
|
|
From: "Carol McCarthy" <Carol.McCarthy at mail.wvu.edu> on 2010.03.02 at 14:10:25(20685)
Hello Steve, John, Conrad and anyone else reading along,
I checked my database yesterday, I got the name from the same source John quotes; A.B. Graph's Exotica; page 172 of Edition 9 to be more exact. I will also note that the plant has been in one of two university greenhouse here at WVU for at least 15 years. From what I know of the collections, I do not believe that this material was collected straight from habitat even back then. Whether it was bought, traded for or a gift I do not have any records to enlighten me. The two professors who might know are both long retired.
We have been doing an inventory update of the greenhouse collections and working on correcting and updating questionable names along the way. I guess for now, this one will stay questionable.
This Dieffenbachia grows very slowly and has a different, deeper green than most. As the picture John attached shows a little, the petioles show stripes and or dots of lighter colors on the deep green ground color. Currently the plant is at another greenhouse across campus, I will try to get a picture of this plant, whatever it is, in the near future and post it. Since we have established that D. hoffmannii is not a valid name does anyone have any suggestions as to a correct identity?
Thanks to a great group for any help at all.
Carol.
| HTML +More | |
Carol McCarthy
Greenhouse Manager
Biology Department
West Virginia University
PO Box 6057
53 Campus Drive
Morgantown, WV 26506
304-293-5201 ext 31477
>>> "John" 3/1/2010 2:19 PM >>>
I cannot give a source for the name Dieffenbachia hoffmannii but I have in the 60s and 70s grown this Dieffenbachia, in fact it was a favourite of mine. The name is no longer valid, if it ever was, but D. ‘Exotica’ or ‘arvida’ may be a mutation of it, whatever it is. Both are said by Graf to be from Costa Rica.
The accompanying illustration may perhaps answer questions about markings on stem and petiole.
John.
--=__PartF3D93841.0__=----==============21853508003158028= |
|
From: ExoticRainforest <Steve at ExoticRainforest.com>
on 2010.03.04 at 13:49:42(20690)
_______________________________________________
Aroid-L mailing list
Aroid-L@www.gizmoworks.com
| +More | |
http://www.gizmoworks.com/mailman/listinfo/aroid-l
--------------030907090004050707030109--
|
|
From: ExoticRainforest <Steve at ExoticRainforest.com> on 2010.03.04 at 13:49:42(20691)
The photo in Graf's material is verysimilar to Dieffenbachia seguine (Jacq.)Schott. That species has a ton of synonym names but since" hoffmanii"is not a legitimate name it isn't in the list. As I stated earlier,Mr. Graf's books are a good photo source but Dr. Croat has pointed outin several personal conversations his photos are often improperlycaptioned.
I would suggest you go to the link below, check the photo, then clickon "specimens" at the top of the page. Scroll down to any that werecollected by Dr. Croat, scroll over to the right of the page and clickon his collection number. There you will find where he collected italong with his field notes. Frequently there is enough material thereto make a good ID of a plant, just read as many of Tom's notes aspossible.
http://www.tropicos.org/Name/2106342
However, like all aroids this species can be variable. If you click onthe synonyms on the first page you'll find a long list of additionalnames (now invalid) granted to this species. My guess is you likelyhave a synonym of this species. Although your plant is far too old tobe one of the recent tissue cultures there are many variations beingcreated in tissue culture of this species that can be bought at manystores.
I believe the speciesis in Dr. Croat's Revision of Dieffenbachia(Araceae) of Mexico, Central America, and the West Indies butI don't have a copy. If you have access to JSTOR Isuggest you check out that source.
For those on Aroid l not familiar with natural variability this linkmay be useful. The article addresses why many of us have troublelearning what species we are growing. I recently rewrote the entirepage and added a bunch of photos to illustrate how extreme variabilitycan be in aroid species. I've already asked several well knownaroiders to read the info and so far only one objection has come backto one particular section. I addressed that and feel relativelyconfident the material is scientifically accurate.
If any of you with a strong background in botany find an error I willquickly address the problem: http://www.exoticrainforest.com/Natural%20variation%20within%20aroid%20and%20%20plant%20species.html
Steve
| HTML +More | |
www.ExoticRainforest.com
On 3/2/2010 08:10, Carol McCarthy wrote:
Hello Steve, John, Conrad and anyone else reading along,
I checked my database yesterday, I got the name from thesame source John quotes; A.B. Graph's Exotica; page 172 of Edition 9 tobe more exact. I will also note that the plant has been in one of twouniversity greenhouse here at WVU for at least 15 years. From what Iknow of the collections, I do not believe that this material wascollected straight from habitat even back then. Whether it was bought,traded for or a gift I do not have any records to enlighten me. Thetwo professors who might know are both long retired.
We have been doing an inventory update of the greenhousecollections and working on correcting and updating questionable namesalong the way. I guess for now, this one will stay questionable.
This Dieffenbachia grows very slowly and has a different,deeper green than most. As the picture John attached shows a little,the petioles show stripes and or dots of lighter colors on the deepgreen ground color. Currently the plant is at another greenhouseacross campus, I will try to get a picture of this plant, whatever itis, in the near future and post it. Since we have established that D.hoffmannii is not a valid name does anyone have any suggestions as to acorrect identity?
Thanks to a great group for any help at all.
Carol.
Carol McCarthy
Greenhouse Manager
Biology Department
West Virginia University
PO Box 6057
53 Campus Drive
Morgantown, WV 26506
304-293-5201 ext 31477
>>> "John" 3/1/2010 2:19 PM>>>
I cannotgive a source for the name Dieffenbachia hoffmannii but I have in the60s and 70s grown this Dieffenbachia, in fact it was a favourite ofmine. The name is no longer valid, if it ever was, but D.‘Exotica’ or ‘arvida’ may be a mutation of it, whatever it is. Both are said by Graf to be from Costa Rica.
Theaccompanying illustration may perhaps answer questions about markingson stem and petiole.
John.
_______________________________________________Aroid-L mailing listAroid-L@www.gizmoworks.comhttp://www.gizmoworks.com/mailman/listinfo/aroid-l
--------------030907090004050707030109 |
|
From: "Marek Argent" <abri1973 at wp.pl>
on 2010.03.07 at 20:47:12(20712)
Hello,
There is a wrong photo in the database:
http://www.tropicos.org/Name/2106342
This is Aglaonema commutatum, not Dieffenbachia.
To Anyone signed up in the MoBot: please report the error.
Best,
Marek Argent
| +More |
----- Original Message -----
From: ExoticRainforest
To: Discussion of aroids
Sent: Thursday, March 04, 2010 2:49 PM
Subject: Re: [Aroid-l] Dieffenbachia hoffmannii photo?
The photo in Graf's material is very similar to Dieffenbachia seguine
(Jacq.) Schott. That species has a ton of synonym names but since"
hoffmanii" is not a legitimate name it isn't in the list. As I stated
earlier, Mr. Graf's books are a good photo source but Dr. Croat has
pointed out in several personal conversations his photos are often
improperly captioned.
I would suggest you go to the link below, check the photo, then click
on "specimens" at the top of the page. Scroll down to any that were
collected by Dr. Croat, scroll over to the right of the page and click
on his collection number. There you will find where he collected it
along with his field notes. Frequently there is enough material there
to make a good ID of a plant, just read as many of Tom's notes as
possible.
http://www.tropicos.org/Name/2106342
However, like all aroids this species can be variable. If you click
on the synonyms on the first page you'll find a long list of additional
names (now invalid) granted to this species. My guess is you likely
have a synonym of this species. Although your plant is far too old to
be one of the recent tissue cultures there are many variations being
created in tissue culture of this species that can be bought at many
stores.
I believe the species is in Dr. Croat's Revision of Dieffenbachia
(Araceae) of Mexico, Central America, and the West Indies but I don't
have a copy. If you have access to JSTOR I suggest you check out that
source.
For those on Aroid l not familiar with natural variability this link
may be useful. The article addresses why many of us have trouble
learning what species we are growing. I recently rewrote the entire
page and added a bunch of photos to illustrate how extreme variability
can be in aroid species. I've already asked several well known aroiders
to read the info and so far only one objection has come back to one
particular section. I addressed that and feel relatively confident the
material is scientifically accurate.
If any of you with a strong background in botany find an error I will
quickly address the problem:
http://www.exoticrainforest.com/Natural%20variation%20within%20aroid%20an
d%20%20plant%20species.html
Steve
www.ExoticRainforest.com
On 3/2/2010 08:10, Carol McCarthy wrote:
Hello Steve, John, Conrad and anyone else reading along,
I checked my database yesterday, I got the name from the same
source John quotes; A.B. Graph's Exotica; page 172 of Edition 9 to be
more exact. I will also note that the plant has been in one of two
university greenhouse here at WVU for at least 15 years. From what I
know of the collections, I do not believe that this material was
collected straight from habitat even back then. Whether it was bought,
traded for or a gift I do not have any records to enlighten me. The two
professors who might know are both long retired.
We have been doing an inventory update of the greenhouse
collections and working on correcting and updating questionable names
along the way. I guess for now, this one will stay questionable.
This Dieffenbachia grows very slowly and has a different,
deeper green than most. As the picture John attached shows a little,
the petioles show stripes and or dots of lighter colors on the deep
green ground color. Currently the plant is at another greenhouse across
campus, I will try to get a picture of this plant, whatever it is, in
the near future and post it. Since we have established that D.
hoffmannii is not a valid name does anyone have any suggestions as to a
correct identity?
Thanks to a great group for any help at all.
Carol.
Carol McCarthy
Greenhouse Manager
Biology Department
West Virginia University
PO Box 6057
53 Campus Drive
Morgantown, WV 26506
304-293-5201 ext 31477
>>> "John" 3/1/2010 2:19 PM >>>
I cannot give a source for the name Dieffenbachia hoffmannii but I
have in the 60s and 70s grown this Dieffenbachia, in fact it was a
favourite of mine. The name is no longer valid, if it ever was, but D.
‘Exotica’ or
‘arvida’ may be a mutation of
it, whatever it is. Both are said by Graf to be from Costa Rica.
The accompanying illustration may perhaps answer questions about
markings on stem and petiole.
John.
_______________________________________________
Aroid-L mailing list
Aroid-L@www.gizmoworks.com
http://www.gizmoworks.com/mailman/listinfo/aroid-l
-------------------------------------------------------------------------
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--==============49188169121024086==--
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From: "Marek Argent" <abri1973 at wp.pl> on 2010.03.07 at 20:47:12(20713)
Hello,
There is a wrong photo in the database:
http://www.tropicos.org/Name/2106342
This is Aglaonema commutatum, not Dieffenbachia.
To Anyone signed up in the MoBot: please report the error.
Best,
Marek Argent
| HTML +More | |
----- Original Message -----
From: ExoticRainforest
To: Discussion of aroids
Sent: Thursday, March 04, 2010 2:49 PM
Subject: Re: [Aroid-l] Dieffenbachia hoffmannii photo?
The photo in Graf's material is very similar to Dieffenbachia seguine (Jacq.) Schott. That species has a ton of synonym names but since" hoffmanii" is not a legitimate name it isn't in the list. As I stated earlier, Mr. Graf's books are a good photo source but Dr. Croat has pointed out in several personal conversations his photos are often improperly captioned.
I would suggest you go to the link below, check the photo, then click on "specimens" at the top of the page. Scroll down to any that were collected by Dr. Croat, scroll over to the right of the page and click on his collection number. There you will find where he collected it along with his field notes. Frequently there is enough material there to make a good ID of a plant, just read as many of Tom's notes as possible.
http://www.tropicos.org/Name/2106342
However, like all aroids this species can be variable. If you click on the synonyms on the first page you'll find a long list of additional names (now invalid) granted to this species. My guess is you likely have a synonym of this species. Although your plant is far too old to be one of the recent tissue cultures there are many variations being created in tissue culture of this species that can be bought at many stores.
I believe the species is in Dr. Croat's Revision of Dieffenbachia (Araceae) of Mexico, Central America, and the West Indies but I don't have a copy. If you have access to JSTOR I suggest you check out that source.
For those on Aroid l not familiar with natural variability this link may be useful. The article addresses why many of us have trouble learning what species we are growing. I recently rewrote the entire page and added a bunch of photos to illustrate how extreme variability can be in aroid species. I've already asked several well known aroiders to read the info and so far only one objection has come back to one particular section. I addressed that and feel relatively confident the material is scientifically accurate.
If any of you with a strong background in botany find an error I will quickly address the problem: http://www.exoticrainforest.com/Natural%20variation%20within%20aroid%20and%20%20plant%20species.html
Steve
www.ExoticRainforest.com
On 3/2/2010 08:10, Carol McCarthy wrote:
Hello Steve, John, Conrad and anyone else reading along,
I checked my database yesterday, I got the name from the same source John quotes; A.B. Graph's Exotica; page 172 of Edition 9 to be more exact. I will also note that the plant has been in one of two university greenhouse here at WVU for at least 15 years. From what I know of the collections, I do not believe that this material was collected straight from habitat even back then. Whether it was bought, traded for or a gift I do not have any records to enlighten me. The two professors who might know are both long retired.
We have been doing an inventory update of the greenhouse collections and working on correcting and updating questionable names along the way. I guess for now, this one will stay questionable.
This Dieffenbachia grows very slowly and has a different, deeper green than most. As the picture John attached shows a little, the petioles show stripes and or dots of lighter colors on the deep green ground color. Currently the plant is at another greenhouse across campus, I will try to get a picture of this plant, whatever it is, in the near future and post it. Since we have established that D. hoffmannii is not a valid name does anyone have any suggestions as to a correct identity?
Thanks to a great group for any help at all.
Carol.
Carol McCarthy
Greenhouse Manager
Biology Department
West Virginia University
PO Box 6057
53 Campus Drive
Morgantown, WV 26506
304-293-5201 ext 31477
>>> "John" 3/1/2010 2:19 PM >>>
I cannot give a source for the name Dieffenbachia hoffmannii but I have in the 60s and 70s grown this Dieffenbachia, in fact it was a favourite of mine. The name is no longer valid, if it ever was, but D. ‘Exotica’ or ‘arvida’ may be a mutation of it, whatever it is. Both are said by Graf to be from Costa Rica.
The accompanying illustration may perhaps answer questions about markings on stem and petiole.
John.
_______________________________________________Aroid-L mailing listAroid-L@www.gizmoworks.comhttp://www.gizmoworks.com/mailman/listinfo/aroid-l
_______________________________________________
Aroid-L mailing list
Aroid-L@www.gizmoworks.com
http://www.gizmoworks.com/mailman/listinfo/aroid-l
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Sprawdzone przez AVG - www.avg.com
Wersja: 8.5.435 / Baza danych wirusów: 271.1.1/2727 - Data wydania: 03/06/10 19:34:00
------=_NextPart_000_00DD_01CABE3F.BEFEB0E0----==============49188169121024086= |
|
From: "Tom Croat" <Thomas.Croat at mobot.org>
on 2010.03.10 at 23:02:45(20742)
RGVhciBNYXJlazoNCiANCiAgICBDb25zaWRlciBpdCBkb25lLiAgVGhlc2UgaW1hZ2VzIGNvbWUg
dG8gdXMgaW1wcm9wZXJseSBuYW1lZCBhbmQgc29tZW9uZSBlbnRlcnMgdGhlbSBhdXRvbWF0aWNh
bGx5LiBJIG5ldmVyIHNlZSB0aGVtIHNvIEkgZG8gYXBwcmVjaWF0ZSBrbm93aW5nIGFib3V0IHRo
ZSBlcnJvcnMuDQogDQpUb20gDQoNCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fDQoN
CkZyb206IGFyb2lkLWwtYm91bmNlc0BnaXptb3dvcmtzLmNvbSBbbWFpbHRvOmFyb2lkLWwtYm91
bmNlc0BnaXptb3dvcmtzLmNvbV0gT24gQmVoYWxmIE9mIE1hcmVrIEFyZ2VudA0KU2VudDogU3Vu
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From: "Tom Croat" <Thomas.Croat at mobot.org> on 2010.03.10 at 23:02:45(20743)
Dear Marek:
Consider it done. These images come to us
improperly named and someone enters them automatically. I never see them so I do
appreciate knowing about the errors.
Tom
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From: aroid-l-bounces@gizmoworks.com
[mailto:aroid-l-bounces@gizmoworks.com] On Behalf Of Marek
Argent
Sent: Sunday, March 07, 2010 2:47 PM
To: Discussion
of aroids
Subject: Re: [Aroid-l] Dieffenbachia hoffmannii
photo?
Hello,
There is a wrong photo in the
database:
href="http://www.tropicos.org/Name/2106342">http://www.tropicos.org/Name/2106342
This is Aglaonema commutatum, not
Dieffenbachia.
To Anyone signed up in the MoBot: please report the
error.
Best,
Marek Argent
----- Original Message -----
From:
href="mailto:Steve@ExoticRainforest.com">ExoticRainforest
To:
href="mailto:aroid-l@gizmoworks.com">Discussion of aroids
Sent: Thursday, March 04, 2010 2:49
PM
Subject: Re: [Aroid-l] Dieffenbachia
hoffmannii photo?
The photo in Graf's material is
very similar to Dieffenbachia seguine (Jacq.)
Schott. That species has a ton of synonym names but since" hoffmanii" is
not a legitimate name it isn't in the list. As I stated earlier, Mr.
Graf's books are a good photo source but Dr. Croat has pointed out in several
personal conversations his photos are often improperly captioned.
I
would suggest you go to the link below, check the photo, then click on
"specimens" at the top of the page. Scroll down to any that were
collected by Dr. Croat, scroll over to the right of the page and click on his
collection number. There you will find where he collected it along with
his field notes. Frequently there is enough material there to make a
good ID of a plant, just read as many of Tom's notes as
possible.
class=moz-txt-link-freetext
href="http://www.tropicos.org/Name/2106342">http://www.tropicos.org/Name/2106342
However,
like all aroids this species can be variable. If you click on the
synonyms on the first page you'll find a long list of additional names (now
invalid) granted to this species. My guess is you likely have a synonym
of this species. Although your plant is far too old to be one of the
recent tissue cultures there are many variations being created in tissue
culture of this species that can be bought at many stores.
I believe the species is in Dr. Croat's
Revision of Dieffenbachia (Araceae) of Mexico,
Central America, and the West Indies but I don't have a
copy. If you have access to JSTOR I suggest you
check out that source.
For those
on Aroid l not familiar with natural variability this link may be
useful. The article addresses why many of us have trouble learning what
species we are growing. I recently rewrote the entire page and added a
bunch of photos to illustrate how extreme variability can be in aroid
species. I've already asked several well known aroiders to read the info
and so far only one objection has come back to one particular section. I
addressed that and feel relatively confident the material is scientifically
accurate.
If any of you with a strong background in botany find
an error I will quickly address the problem:
class=moz-txt-link-freetext
href="http://www.exoticrainforest.com/Natural%20variation%20within%20aroid%20and%20%20plant%20species.html">http://www.exoticrainforest.com/Natural%20variation%20within%20aroid%20and%20%20plant%20species.html
Steve
class=moz-txt-link-abbreviated
href="http://www.ExoticRainforest.com">www.ExoticRainforest.com
On 3/2/2010 08:10,
Carol McCarthy wrote:
Hello Steve, John, Conrad and anyone else reading along,
I checked my database yesterday, I got the
name from the same source John quotes; A.B. Graph's Exotica; page 172
of Edition 9 to be more exact. I will also note that the plant
has been in one of two university greenhouse here at WVU for at least 15
years. From what I know of the collections, I do not believe that this
material was collected straight from habitat even back then. Whether
it was bought, traded for or a gift I do not have any records to enlighten
me. The two professors who might know are both long retired.
We have been doing an inventory update of the
greenhouse collections and working on correcting and updating questionable
names along the way. I guess for now, this one will stay
questionable.
This Dieffenbachia grows very slowly and has a
different, deeper green than most. As the picture John attached shows
a little, the petioles show stripes and or dots of lighter colors on the
deep green ground color. Currently the plant is at another greenhouse
across campus, I will try to get a picture of this plant, whatever it
is, in the near future and post it. Since we have established
that D. hoffmannii is not a valid name does anyone have any suggestions as
to a correct identity?
Thanks to a great group for any help at
all.
Carol.
Carol McCarthy
Greenhouse Manager
Biology Department
West Virginia
University
PO Box 6057
53 Campus Drive
Morgantown, WV 26506
304-293-5201 ext
31477
>>> "John"
href="mailto:criswick@spiceisle.com">
3/1/2010 2:19 PM >>>
I cannot give a
source for the name Dieffenbachia hoffmannii but I have in the 60s and 70s
grown this Dieffenbachia, in fact it was a favourite of mine. The name
is no longer valid, if it ever was, but D. ‘Exotica’ or ‘arvida’ may
be a mutation of it, whatever it is. Both are said by Graf to be from
Costa
Rica.
The accompanying
illustration may perhaps answer questions about markings on stem and
petiole.
John.
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From: ExoticRainforest <Steve at ExoticRainforest.com>
on 2010.03.12 at 20:38:51(20753)
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--------------030202080807080600070402--
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From: ExoticRainforest <Steve at ExoticRainforest.com> on 2010.03.12 at 20:38:51(20754)
Due to confusion over the link Igave for a photo of Dieffenbachia seguine I located anotherfrom the Missouri Botanical Garden. At least to me, this photoresembles the photo posted of "Dieffenbachia hoffmanii" from Graf'swork.
http://www.mobot.org/gardinghelp/plantfinder/Plant.asp?code89
Steve
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www.ExoticRainforest.com
On 3/1/2010 01:19, John wrote:
I cannotgive a sourcefor the name Dieffenbachia hoffmannii but I have in the 60s and 70sgrown thisDieffenbachia, in fact it was a favourite of mine. The name is nolonger valid,if it ever was, but D. ‘Exotica’ or ‘arvida’ may be amutation of it, whatever it is. Both are said by Graf to be from Costa Rica.
Theaccompanyingillustration may perhaps answer questions about markings on stem andpetiole.
John.
--------------030202080807080600070402 |
|
From: "John" <criswick at spiceisle.com>
on 2010.03.14 at 13:50:30(20755)
Steve, there are quite a few other Dieffenbachias in my collection, dating
from the 1970s when little hybridization had been going on. Such as the one
in Exotica called San Antonio, which is now growing profusely as an escape.
Should you be interested, I can send pictures.
John.
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From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com]
On Behalf Of ExoticRainforest
Sent: Friday, March 12, 2010 4:39 PM
To: Discussion of aroids
Subject: Re: [Aroid-l] Dieffenbachia hoffmannii photo?
Due to confusion over the link I gave for a photo of Dieffenbachia seguine I
located another from the Missouri Botanical Garden. At least to me, this
photo resembles the photo posted of "Dieffenbachia hoffmanii" from Graf's
work.
http://www.mobot.org/gardinghelp/plantfinder/Plant.asp?code89
Steve
www.ExoticRainforest.com
On 3/1/2010 01:19, John wrote:
I cannot give a source for the name Dieffenbachia hoffmannii but I have in
the 60s and 70s grown this Dieffenbachia, in fact it was a favourite of
mine. The name is no longer valid, if it ever was, but D. 'Exotica' or
'arvida' may be a mutation of it, whatever it is. Both are said by Graf to
be from Costa Rica.
The accompanying illustration may perhaps answer questions about markings on
stem and petiole.
John.
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Aroid-L@www.gizmoworks.com
http://www.gizmoworks.com/mailman/listinfo/aroid-l
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From: "Tom Croat" <Thomas.Croat at mobot.org>
on 2010.03.15 at 16:37:48(20756)
Dear Steve:
I know nothing about the origin of that image but I might
not even be D. seguine. That species has at least 3 distinct features,
a sharply sulcate petiole, a protrudent spadix which is somewhat clavate
spadix and a bilocular ovary. Other than that it is highly variable.
Tom
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________________________________
From: aroid-l-bounces@gizmoworks.com
[mailto:aroid-l-bounces@gizmoworks.com] On Behalf Of ExoticRainforest
Sent: Friday, March 12, 2010 2:39 PM
To: Discussion of aroids
Subject: Re: [Aroid-l] Dieffenbachia hoffmannii photo?
Due to confusion over the link I gave for a photo of Dieffenbachia
seguine I located another from the Missouri Botanical Garden. At least
to me, this photo resembles the photo posted of "Dieffenbachia
hoffmanii" from Graf's work.
http://www.mobot.org/gardinghelp/plantfinder/Plant.asp?code=B589
Steve
www.ExoticRainforest.com
On 3/1/2010 01:19, John wrote:
I cannot give a source for the name Dieffenbachia hoffmannii but I have
in the 60s and 70s grown this Dieffenbachia, in fact it was a favourite
of mine. The name is no longer valid, if it ever was, but D. 'Exotica'
or 'arvida' may be a mutation of it, whatever it is. Both are said by
Graf to be from Costa Rica.
The accompanying illustration may perhaps answer questions about
markings on stem and petiole.
John.
------_=_NextPart_001_01CAC45D.D8C1A1D1
_______________________________________________
Aroid-L mailing list
Aroid-L@www.gizmoworks.com
http://www.gizmoworks.com/mailman/listinfo/aroid-l
--==============(24434863640845147==--
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From: "Tom Croat" <Thomas.Croat at mobot.org> on 2010.03.15 at 16:37:48(20757)
Dear Steve:
I know nothing about theorigin of that image but I might not even be D. seguine. That species has atleast 3 distinct features, a sharply sulcate petiole, a protrudent spadix whichis somewhat clavate spadix and a bilocular ovary. Other than that it is highlyvariable.
Tom
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From: aroid-l-bounces@gizmoworks.com[mailto:aroid-l-bounces@gizmoworks.com] OnBehalf Of ExoticRainforest
Sent: Friday, March 12, 2010 2:39PM
To: Discussion of aroids
Subject: Re: [Aroid-l]Dieffenbachia hoffmannii photo?
Due to confusion over the link I gave for a photo of Dieffenbachia seguine I located anotherfrom the Missouri Botanical Garden. At least to me, this photo resembles the photo posted of "Dieffenbachiahoffmanii" from Graf's work.
http://www.mobot.org/gardinghelp/plantfinder/Plant.asp?code=B589
Steve
www.ExoticRainforest.com
On 3/1/2010 01:19, John wrote:
I cannot give a source for the name Dieffenbachia hoffmanniibut I have in the 60s and 70s grown this Dieffenbachia, in fact it was afavourite of mine. The name is no longer valid, if it ever was, but D.‘Exotica’ or ‘arvida’ may be a mutation of it, whateverit is. Both are said by Graf to be from Costa Rica.
The accompanyingillustration may perhaps answer questions about markings on stem and petiole.
John.
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