Aroid Forum: Alocaisa gageana

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Alocaisa gageana

From: "Barbara" <hcward416 at comcast.net> on 2009.08.06 at 21:27:37(19647)

I purchased a plant labeled as Alocasia gageana aurea variegata but think I read somewhere that aurea is not the proper name. I did a search on the Aroidean but did not find the correct name. I am a novice but would like to make sure the names are correct. I would appreciate any help.

Barbara
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From: Peter Boyce <phymatarum at googlemail.com> on 2009.08.09 at 01:58:01(19667)
HiBarbara
Thiswill be almost certainly Alocasia macrorrhizos in one of its numerous colourforms. Alocasia gageana was described from northern Burma and is an nom. dub.
Peter
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From: aroid-l-bounces@gizmoworks.com[mailto:aroid-l-bounces@gizmoworks.com] On Behalf Of Barbara
Sent: 07 August 2009 05:28
To: aroid-l@gizmoworks.com
Subject: [Aroid-l] Alocaisa gageana
I purchased aplant labeled as Alocasia gageana aurea variegata but think I readsomewhere that aurea is not the proper name. I did a search on the Aroidean butdid not find the correct name. I am a novice but would like to makesure the names are correct. I would appreciate any help.
Barbara
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From: "Christopher Rogers" <CRogers at ecoanalysts.com> on 2009.08.09 at 19:39:55(19672)
Howdy, Pete!
I thought I had a handle on the large green, entire leaf margin Alocasia. My understanding was that A. gageana had a green erect spathe, leaf sinus reaching petiole; A. odora has a yellow erect spathe, and; A. macrorhiza had a reflexed yellow spathe, with the leaf sinus not reaching the petiole. I am not sure how A. robusta is separated out. So, I am surprised to hear that A. gageana is a nomen dubium. Can you help me out on separating these beasts?
Cheers,
Christopher
+More
D. Christopher Rogers
Invertebrate Ecologist
Telephone: 530.383.4798
EcoAnalysts, Inc.
PO Box 4098
Davis, CA 95616
USA
________________________________
From: aroid-l-bounces@gizmoworks.com on behalf of Peter Boyce
Sent: Sat 08-Aug-09 6:58 PM
To: 'Discussion of aroids'
Subject: Re: [Aroid-l] Alocaisa gageana
Hi Barbara
This will be almost certainly Alocasia macrorrhizos in one of its numerous colour forms. Alocasia gageana was described from northern Burma and is an nom. dub.
Peter
From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com] On Behalf Of Barbara
Sent: 07 August 2009 05:28
To: aroid-l@gizmoworks.com
Subject: [Aroid-l] Alocaisa gageana
I purchased a plant labeled as Alocasia gageana aurea variegata but think I read somewhere that aurea is not the proper name. I did a search on the Aroidean but did not find the correct name. I am a novice but would like to make sure the names are correct. I would appreciate any help.
Barbara
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Aroid-L@www.gizmoworks.com
http://www.gizmoworks.com/mailman/listinfo/aroid-l
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From: Peter Boyce <phymatarum at googlemail.com> on 2009.08.10 at 06:52:58(19676)
Hi Christopher,
These trans-Himalayan large-leaved Alocasia are taxonomic beasts! I�ve
recently tackled the northern Thai species and this is the current status
for those that I investigated.
What you describe as gageana is almost certainly odora; also it is very
likely that gageana is a syn. of odora BUT the type (of gageana) is missing
(presumed desctroyed) from Berlin and Engler�s description is too incompl ete
to pin the name.
What you have as odora (yellow spathe) is definitely A. navicularis.
Alocasia macrorrhizos is almost certainly OK, but spathe colour is very
variable, from white, pinkish, purplish, and �yellow� (actually somewhat
cream).
All of these species produce pairs of inflorescences arising in the leaf
axil (actually terminal on a branching module and then displaced by a new
leaf and thus appearing axillary.
Other names for the transhimalaya in this �macrorrhizos/odora� complex are:
Alocasia cadieri Chantrier, Rev. Hort. 26: 326 (1939)
Alocasia cochinchensis, Pierre ex Engl. & K.Krause Pflanzenr., IV, 23E: 103
(1920)
Alocasia decipiens Schott, Bonplandia (Hannover) 7: 28 (1859)
Alocasia decumbens Buchet, Bull. Mus. Natl. Hist. Nat., II, 11: 417 (1939)
Alocasia evrardii Gagnep., Fl. Indo-Chine 6: 1150 (1942)
Alocasia fallax Schott, Bonplandia (Hannover) 7: 28 (1859)
Alocasia fornicata (Roxb.) Schott, Oesterr. Bot. Wochenbl. 4: 410 (1854)
Alocasia grandis Clemenc., Rev. Hort. 1868: 380 (1868)
Alocasia grata Prain ex Engl. & Krause, Pflanzenr., IV, 23E: 93 (1920)
Alocasia hainanensis K.Krause, Pflanzenr., IV, 23E: 91 (1920)
Alocasia hainanica N.E.Br., J. Linn. Soc., Bot. 36: 183 (1903)
Alocasia lecomtei Engl., Pflanzenr., IV, 23E: 90 (1920)
Alocasia liervalii H�rincq, Hort. Franc.: 243 (1869)
Alocasia longifolia Engl. & K.Krause, Pflanzenr., IV, 23E: 103 (1920)
Alocasia montana (Roxb.) Schott, Oesterr. Bot. Wochenbl. 4: 410 (1854) -
almost certainly the correct name for A. hynosa
Alocasia putii Gagnep., Fl. Indo-Chine 6: 1150 (1942)
Alocasia tonkinensis Engl., Pflanzenr., IV, 23E: 91 (1920)
A LOT to do!
Alocasia robusta produces clusters of up to 20 inflorescences in the
�middle� of the plant, with the entire cluster then �pierced� by th e newly
emerging leaf, and is not part of the above complex, being closest to A.
puber, A. sarawakensis, etc.
Cheers
Peter
+More
From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com]
On Behalf Of Christopher Rogers
Sent: 10 August 2009 03:40
To: Discussion of aroids
Subject: Re: [Aroid-l] Alocaisa gageana
Howdy, Pete!
I thought I had a handle on the large green, entire leaf margin Alocasia. My
understanding was that A. gageana had a green erect spathe, leaf sinus
reaching petiole; A. odora has a yellow erect spathe, and; A. macrorhiza had
a reflexed yellow spathe, with the leaf sinus not reaching the petiole. I am
not sure how A. robusta is separated out. So, I am surprised to hear that A.
gageana is a nomen dubium. Can you help me out on separating these beasts?
Cheers,
Christopher
D. Christopher Rogers
Invertebrate Ecologist
Telephone: 530.383.4798
EcoAnalysts, Inc.
PO Box 4098
Davis, CA 95616
USA
________________________________________
From: aroid-l-bounces@gizmoworks.com on behalf of Peter Boyce
Sent: Sat 08-Aug-09 6:58 PM
To: 'Discussion of aroids'
Subject: Re: [Aroid-l] Alocaisa gageana
Hi Barbara
This will be almost certainly Alocasia macrorrhizos in one of its numerous
colour forms. Alocasia gageana was described from northern Burma and is an
nom. dub.
Peter
From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com]
On Behalf Of Barbara
Sent: 07 August 2009 05:28
To: aroid-l@gizmoworks.com
Subject: [Aroid-l] Alocaisa gageana
I purchased a plant labeled as Alocasia gageana aurea variegata but think I
read somewhere that aurea is not the proper name. I did a search on the
Aroidean but did not find the correct name. I am a novice but would like to
make sure the names are correct. I would appreciate any help.
Barbara
_______________________________________________
Aroid-L mailing list
Aroid-L@www.gizmoworks.com
http://www.gizmoworks.com/mailman/listinfo/aroid-l

From: Eric Schmidt <leu242 at yahoo.com> on 2009.08.10 at 14:12:59(19682)
So Alocasia gageana is not a valid species ? What is the small, dwarf form called A. gageana here in the nursery trade. Sometimes it is sold as Alocasia 'California'? Is this a form or cultivar of A. macrorrhizos or A. odora ?
http://s215.photobucket.com/albums/cc37/Leu51/Aroids/?action=view¤tJ7f.jpg
http://i215.photobucket.com/albums/cc37/Leu51/Aroids/4a7f.jpg
Eric Schmidt
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Botanic Records
Harry P. Leu Gardens
1920 N. Forest Ave.
Orlando, FL. 32803 USA
eric.schmidt@cityoforlando.net
ph. # (407)-246-3749
fax # (407)-246-2849
www.leugardens.org
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From: Peter Boyce <phymatarum at googlemail.com> on 2009.08.11 at 09:33:23(19689)
Eric,
Alocasia gageana Engler is a valid speces in that it is a validly
published name but because the type is missing (presumed destroyed in
Berlin during WWII, we're simply not sure WHAT it is except that
anything in cultivation with this name attached is 99.9% certain NOT
to be A. gagenana sensu Engler.
Peter
+More
On Mon, Aug 10, 2009 at 7:12 AM, Eric Schmidt wrote:
> So Alocasia gageana is not a valid species ? What is the small, dwarf for m called A. gageana here in the nursery trade. Sometimes it is sold as Aloc asia 'California'? Is this a form or cultivar of A. macrorrhizos or A. odor a ?
>
>
> http://s215.photobucket.com/albums/cc37/Leu51/Aroids/?action=view&curre nt=4a7f.jpg
>
> http://i215.photobucket.com/albums/cc37/Leu51/Aroids/4a7f.jpg
>
>
>
> Eric Schmidt
> Botanic Records
> Harry P. Leu Gardens
> 1920 N. Forest Ave.
> Orlando, FL. 32803 USA
> eric.schmidt@cityoforlando.net
> ph. # (407)-246-3749
> fax # (407)-246-2849
> www.leugardens.org
>
>
>
>
> _______________________________________________
> Aroid-L mailing list
> Aroid-L@www.gizmoworks.com
> http://www.gizmoworks.com/mailman/listinfo/aroid-l
>
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Aroid-L@www.gizmoworks.com
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From: "Christopher Rogers" <crogers at ecoanalysts.com> on 2009.08.11 at 17:58:27(19696)
Fascinating!
Thanks, Peter! So, obviously I had a few things confused. I am glad to know you are working on the group, and I hope that I can get a reprint when you publish.
You said that these plants send up a pair of inflorescences. My A. odora and my A. macrorrhizos have sent up single inflorescences, paired and sometimes three inflorescences. Am I seeing something different, or could this be ecophenotypic variation?
I really enjoy the genus Alocasia, and I do want to learn all I can about the taxonomy. I appreciate your help, and if you ever need any help with freshwater crustacean taxonomy, let me know. I be happy to return the favor!
Thanks for the help!
Christopher
HTML
+More
D. Christopher Rogers
Senior Invertebrate Ecologist/ Taxonomist
((,///////////=======<
EcoAnalysts, Inc.
1.530.383.4798
P.O. Box 4098
Davis, CA 95616
USA
ŸInvertebrate Taxonomy
ŸEndangered Species
ŸEcological Studies
ŸBioassessment
ŸInvasive Species
ŸPlankton
ŸPhycology
IDAHO ∙ CALIFORNIA ∙ MISSOURI ∙ PENNSYLVANIA ∙ ONTARIO
WWW.ECOANALYSTS.COM ∙ ECO@ECOANALYSTS.COM
-----Original Message-----
From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com] On Behalf Of Peter Boyce
Sent: Sunday, August 09, 2009 11:53 PM
To: 'Discussion of aroids'
Subject: Re: [Aroid-l] Alocaisa gageana
Hi Christopher,
These trans-Himalayan large-leaved Alocasia are taxonomic beasts! I’ve
recently tackled the northern Thai species and this is the current status
for those that I investigated.
What you describe as gageana is almost certainly odora; also it is very
likely that gageana is a syn. of odora BUT the type (of gageana) is missing
(presumed desctroyed) from Berlin and Engler’s description is too incomplete
to pin the name.
What you have as odora (yellow spathe) is definitely A. navicularis.
Alocasia macrorrhizos is almost certainly OK, but spathe colour is very
variable, from white, pinkish, purplish, and ‘yellow’ (actually somewhat
cream).
All of these species produce pairs of inflorescences arising in the leaf
axil (actually terminal on a branching module and then displaced by a new
leaf and thus appearing axillary.
Other names for the transhimalaya in this ‘macrorrhizos/odora’ complex are:
Alocasia cadieri Chantrier, Rev. Hort. 26: 326 (1939)
Alocasia cochinchensis, Pierre ex Engl. & K.Krause Pflanzenr., IV, 23E: 103
(1920)
Alocasia decipiens Schott, Bonplandia (Hannover) 7: 28 (1859)
Alocasia decumbens Buchet, Bull. Mus. Natl. Hist. Nat., II, 11: 417 (1939)
Alocasia evrardii Gagnep., Fl. Indo-Chine 6: 1150 (1942)
Alocasia fallax Schott, Bonplandia (Hannover) 7: 28 (1859)
Alocasia fornicata (Roxb.) Schott, Oesterr. Bot. Wochenbl. 4: 410 (1854)
Alocasia grandis Clemenc., Rev. Hort. 1868: 380 (1868)
Alocasia grata Prain ex Engl. & Krause, Pflanzenr., IV, 23E: 93 (1920)
Alocasia hainanensis K.Krause, Pflanzenr., IV, 23E: 91 (1920)
Alocasia hainanica N.E.Br., J. Linn. Soc., Bot. 36: 183 (1903)
Alocasia lecomtei Engl., Pflanzenr., IV, 23E: 90 (1920)
Alocasia liervalii Hérincq, Hort. Franc.: 243 (1869)
Alocasia longifolia Engl. & K.Krause, Pflanzenr., IV, 23E: 103 (1920)
Alocasia montana (Roxb.) Schott, Oesterr. Bot. Wochenbl. 4: 410 (1854) -
almost certainly the correct name for A. hynosa
Alocasia putii Gagnep., Fl. Indo-Chine 6: 1150 (1942)
Alocasia tonkinensis Engl., Pflanzenr., IV, 23E: 91 (1920)
A LOT to do!
Alocasia robusta produces clusters of up to 20 inflorescences in the
‘middle’ of the plant, with the entire cluster then ‘pierced’ by the newly
emerging leaf, and is not part of the above complex, being closest to A.
puber, A. sarawakensis, etc.
Cheers
Peter
From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com]
On Behalf Of Christopher Rogers
Sent: 10 August 2009 03:40
To: Discussion of aroids
Subject: Re: [Aroid-l] Alocaisa gageana
Howdy, Pete!
I thought I had a handle on the large green, entire leaf margin Alocasia. My
understanding was that A. gageana had a green erect spathe, leaf sinus
reaching petiole; A. odora has a yellow erect spathe, and; A. macrorhiza had
a reflexed yellow spathe, with the leaf sinus not reaching the petiole. I am
not sure how A. robusta is separated out. So, I am surprised to hear that A.
gageana is a nomen dubium. Can you help me out on separating these beasts?
Cheers,
Christopher
D. Christopher Rogers
Invertebrate Ecologist
Telephone: 530.383.4798
EcoAnalysts, Inc.
PO Box 4098
Davis, CA 95616
USA
________________________________________
From: aroid-l-bounces@gizmoworks.com on behalf of Peter Boyce
Sent: Sat 08-Aug-09 6:58 PM
To: 'Discussion of aroids'
Subject: Re: [Aroid-l] Alocaisa gageana
Hi Barbara
This will be almost certainly Alocasia macrorrhizos in one of its numerous
colour forms. Alocasia gageana was described from northern Burma and is an
nom. dub.
Peter
From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com]
On Behalf Of Barbara
Sent: 07 August 2009 05:28
To: aroid-l@gizmoworks.com
Subject: [Aroid-l] Alocaisa gageana
I purchased a plant labeled as Alocasia gageana aurea variegata but think I
read somewhere that aurea is not the proper name. I did a search on the
Aroidean but did not find the correct name. I am a novice but would like to
make sure the names are correct. I would appreciate any help.
Barbara
_______________________________________________
Aroid-L mailing list
Aroid-L@www.gizmoworks.com
http://www.gizmoworks.com/mailman/listinfo/aroid-l
No virus found in this incoming message.
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From: Peter Boyce <phymatarum at googlemail.com> on 2009.08.12 at 09:07:10(19698)
The Alocasia account for the Flora of Thailand will be in press by year end and should be published sometime first quarter 2010. There is a precursor paper: A review of Alocasia (Araceae: Colocasieae) for Thailand including a novel species and new species’ records from S.W. Thailand. Thai For. Bull. (Bot.) 36: 1 – 17 (2008) but unfortunately I have no reprints as yet.
I should have said that the ‘pair’ of inflorescences is an average; the important thing is actually the displacement, giving the inflorescence modules an leaf-axillary appearance.
Thanks for the offer of assistance with our freshwater crustacean queries; what we really need at the moment is a coleopteran taxonomist to help us with naming the beetles that we are trying to identify!
Very best
Peter
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+More
From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com] On Behalf Of Christopher Rogers
Sent: 12 August 2009 01:58
To: 'Discussion of aroids'
Subject: Re: [Aroid-l] Alocaisa gageana
Fascinating!
Thanks, Peter! So, obviously I had a few things confused. I am glad to know you are working on the group, and I hope that I can get a reprint when you publish.
You said that these plants send up a pair of inflorescences. My A. odora and my A. macrorrhizos have sent up single inflorescences, paired and sometimes three inflorescences. Am I seeing something different, or could this be ecophenotypic variation?
I really enjoy the genus Alocasia, and I do want to learn all I can about the taxonomy. I appreciate your help, and if you ever need any help with freshwater crustacean taxonomy, let me know. I be happy to return the favor!
Thanks for the help!
Christopher
D. Christopher Rogers
Senior Invertebrate Ecologist/ Taxonomist
((,///////////=======<
ECOANALYSTS, INC.
1.530.383.4798
P.O. Box 4098
Davis, CA 95616
USA
UInvertebrate Taxonomy
IEndangered Species
EEcological Studies
EBioassessment
BInvasive Species
IPlankton
PPhycology
IDAHO ∙ CALIFORNIA ∙ MISSOURI ∙ PENNSYLVANIA ∙ ONTARIO
WWW.ECOANALYSTS.COM ∙ ECO@ECOANALYSTS.COM
-----Original Message-----
From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com] On Behalf Of Peter Boyce
Sent: Sunday, August 09, 2009 11:53 PM
To: 'Discussion of aroids'
Subject: Re: [Aroid-l] Alocaisa gageana
Hi Christopher,
These trans-Himalayan large-leaved Alocasia are taxonomic beasts! I’ve
recently tackled the northern Thai species and this is the current status
for those that I investigated.
What you describe as gageana is almost certainly odora; also it is very
likely that gageana is a syn. of odora BUT the type (of gageana) is missing
(presumed desctroyed) from Berlin and Engler’s description is too incomplete
to pin the name.
What you have as odora (yellow spathe) is definitely A. navicularis.
Alocasia macrorrhizos is almost certainly OK, but spathe colour is very
variable, from white, pinkish, purplish, and ‘yellow’ (actually somewhat
cream).
All of these species produce pairs of inflorescences arising in the leaf
axil (actually terminal on a branching module and then displaced by a new
leaf and thus appearing axillary.
Other names for the transhimalaya in this ‘macrorrhizos/odora’ complex are:
Alocasia cadieri Chantrier, Rev. Hort. 26: 326 (1939)
Alocasia cochinchensis, Pierre ex Engl. & K.Krause Pflanzenr., IV, 23E: 103
(1920)
Alocasia decipiens Schott, Bonplandia (Hannover) 7: 28 (1859)
Alocasia decumbens Buchet, Bull. Mus. Natl. Hist. Nat., II, 11: 417 (1939)
Alocasia evrardii Gagnep., Fl. Indo-Chine 6: 1150 (1942)
Alocasia fallax Schott, Bonplandia (Hannover) 7: 28 (1859)
Alocasia fornicata (Roxb.) Schott, Oesterr. Bot. Wochenbl. 4: 410 (1854)
Alocasia grandis Clemenc., Rev. Hort. 1868: 380 (1868)
Alocasia grata Prain ex Engl. & Krause, Pflanzenr., IV, 23E: 93 (1920)
Alocasia hainanensis K.Krause, Pflanzenr., IV, 23E: 91 (1920)
Alocasia hainanica N.E.Br., J. Linn. Soc., Bot. 36: 183 (1903)
Alocasia lecomtei Engl., Pflanzenr., IV, 23E: 90 (1920)
Alocasia liervalii Hérincq, Hort. Franc.: 243 (1869)
Alocasia longifolia Engl. & K.Krause, Pflanzenr., IV, 23E: 103 (1920)
Alocasia montana (Roxb.) Schott, Oesterr. Bot. Wochenbl. 4: 410 (1854) -
almost certainly the correct name for A. hynosa
Alocasia putii Gagnep., Fl. Indo-Chine 6: 1150 (1942)
Alocasia tonkinensis Engl., Pflanzenr., IV, 23E: 91 (1920)
A LOT to do!
Alocasia robusta produces clusters of up to 20 inflorescences in the
‘middle’ of the plant, with the entire cluster then ‘pierced’ by the newly
emerging leaf, and is not part of the above complex, being closest to A.
puber, A. sarawakensis, etc.
Cheers
Peter
From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com]
On Behalf Of Christopher Rogers
Sent: 10 August 2009 03:40
To: Discussion of aroids
Subject: Re: [Aroid-l] Alocaisa gageana
Howdy, Pete!
I thought I had a handle on the large green, entire leaf margin Alocasia. My
understanding was that A. gageana had a green erect spathe, leaf sinus
reaching petiole; A. odora has a yellow erect spathe, and; A. macrorhiza had
a reflexed yellow spathe, with the leaf sinus not reaching the petiole. I am
not sure how A. robusta is separated out. So, I am surprised to hear that A.
gageana is a nomen dubium. Can you help me out on separating these beasts?
Cheers,
Christopher
D. Christopher Rogers
Invertebrate Ecologist
Telephone: 530.383.4798
EcoAnalysts, Inc.
PO Box 4098
Davis, CA 95616
USA
________________________________________
From: aroid-l-bounces@gizmoworks.com on behalf of Peter Boyce
Sent: Sat 08-Aug-09 6:58 PM
To: 'Discussion of aroids'
Subject: Re: [Aroid-l] Alocaisa gageana
Hi Barbara
This will be almost certainly Alocasia macrorrhizos in one of its numerous
colour forms. Alocasia gageana was described from northern Burma and is an
nom. dub.
Peter
From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com]
On Behalf Of Barbara
Sent: 07 August 2009 05:28
To: aroid-l@gizmoworks.com
Subject: [Aroid-l] Alocaisa gageana
I purchased a plant labeled as Alocasia gageana aurea variegata but think I
read somewhere that aurea is not the proper name. I did a search on the
Aroidean but did not find the correct name. I am a novice but would like to
make sure the names are correct. I would appreciate any help.
Barbara
_______________________________________________
Aroid-L mailing list
Aroid-L@www.gizmoworks.com
http://www.gizmoworks.com/mailman/listinfo/aroid-l
No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 8.5.392 / Virus Database: 270.13.49/2295 - Release Date: 08/10/09 18:19:00
------=_NextPart_000_0028_01CA1B6F.59EF5F60
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From: "Christopher Rogers" <crogers at ecoanalysts.com> on 2009.08.12 at 21:16:48(19710)
Okay, the axillary aspect makes far more sense, and fits with what I have growing and what I have seen in SE Asia.
I will see what I can find out for you on the beetles . . .
Christopher
HTML
+More
D. Christopher Rogers
Senior Invertebrate Ecologist/ Taxonomist
((,///////////=======<
EcoAnalysts, Inc.
1.530.383.4798
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From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com] On Behalf Of Peter Boyce
Sent: Wednesday, August 12, 2009 2:07 AM
To: 'Discussion of aroids'
Subject: Re: [Aroid-l] Alocaisa gageana
The Alocasia account for the Flora of Thailand will be in press by year end and should be published sometime first quarter 2010. There is a precursor paper: A review of Alocasia (Araceae: Colocasieae) for Thailand including a novel species and new species’ records from S.W. Thailand. Thai For. Bull. (Bot.) 36: 1 – 17 (2008) but unfortunately I have no reprints as yet.
I should have said that the ‘pair’ of inflorescences is an average; the important thing is actually the displacement, giving the inflorescence modules an leaf-axillary appearance.
Thanks for the offer of assistance with our freshwater crustacean queries; what we really need at the moment is a coleopteran taxonomist to help us with naming the beetles that we are trying to identify!
Very best
Peter
From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com] On Behalf Of Christopher Rogers
Sent: 12 August 2009 01:58
To: 'Discussion of aroids'
Subject: Re: [Aroid-l] Alocaisa gageana
Fascinating!
Thanks, Peter! So, obviously I had a few things confused. I am glad to know you are working on the group, and I hope that I can get a reprint when you publish.
You said that these plants send up a pair of inflorescences. My A. odora and my A. macrorrhizos have sent up single inflorescences, paired and sometimes three inflorescences. Am I seeing something different, or could this be ecophenotypic variation?
I really enjoy the genus Alocasia, and I do want to learn all I can about the taxonomy. I appreciate your help, and if you ever need any help with freshwater crustacean taxonomy, let me know. I be happy to return the favor!
Thanks for the help!
Christopher
D. Christopher Rogers
Senior Invertebrate Ecologist/ Taxonomist
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ECOANALYSTS, INC.
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P.O. Box 4098
Davis, CA 95616
USA
UInvertebrate Taxonomy
IEndangered Species
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-----Original Message-----
From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com] On Behalf Of Peter Boyce
Sent: Sunday, August 09, 2009 11:53 PM
To: 'Discussion of aroids'
Subject: Re: [Aroid-l] Alocaisa gageana
Hi Christopher,
These trans-Himalayan large-leaved Alocasia are taxonomic beasts! I’ve
recently tackled the northern Thai species and this is the current status
for those that I investigated.
What you describe as gageana is almost certainly odora; also it is very
likely that gageana is a syn. of odora BUT the type (of gageana) is missing
(presumed desctroyed) from Berlin and Engler’s description is too incomplete
to pin the name.
What you have as odora (yellow spathe) is definitely A. navicularis.
Alocasia macrorrhizos is almost certainly OK, but spathe colour is very
variable, from white, pinkish, purplish, and ‘yellow’ (actually somewhat
cream).
All of these species produce pairs of inflorescences arising in the leaf
axil (actually terminal on a branching module and then displaced by a new
leaf and thus appearing axillary.
Other names for the transhimalaya in this ‘macrorrhizos/odora’ complex are:
Alocasia cadieri Chantrier, Rev. Hort. 26: 326 (1939)
Alocasia cochinchensis, Pierre ex Engl. & K.Krause Pflanzenr., IV, 23E: 103
(1920)
Alocasia decipiens Schott, Bonplandia (Hannover) 7: 28 (1859)
Alocasia decumbens Buchet, Bull. Mus. Natl. Hist. Nat., II, 11: 417 (1939)
Alocasia evrardii Gagnep., Fl. Indo-Chine 6: 1150 (1942)
Alocasia fallax Schott, Bonplandia (Hannover) 7: 28 (1859)
Alocasia fornicata (Roxb.) Schott, Oesterr. Bot. Wochenbl. 4: 410 (1854)
Alocasia grandis Clemenc., Rev. Hort. 1868: 380 (1868)
Alocasia grata Prain ex Engl. & Krause, Pflanzenr., IV, 23E: 93 (1920)
Alocasia hainanensis K.Krause, Pflanzenr., IV, 23E: 91 (1920)
Alocasia hainanica N.E.Br., J. Linn. Soc., Bot. 36: 183 (1903)
Alocasia lecomtei Engl., Pflanzenr., IV, 23E: 90 (1920)
Alocasia liervalii Hérincq, Hort. Franc.: 243 (1869)
Alocasia longifolia Engl. & K.Krause, Pflanzenr., IV, 23E: 103 (1920)
Alocasia montana (Roxb.) Schott, Oesterr. Bot. Wochenbl. 4: 410 (1854) -
almost certainly the correct name for A. hynosa
Alocasia putii Gagnep., Fl. Indo-Chine 6: 1150 (1942)
Alocasia tonkinensis Engl., Pflanzenr., IV, 23E: 91 (1920)
A LOT to do!
Alocasia robusta produces clusters of up to 20 inflorescences in the
‘middle’ of the plant, with the entire cluster then ‘pierced’ by the newly
emerging leaf, and is not part of the above complex, being closest to A.
puber, A. sarawakensis, etc.
Cheers
Peter
From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com]
On Behalf Of Christopher Rogers
Sent: 10 August 2009 03:40
To: Discussion of aroids
Subject: Re: [Aroid-l] Alocaisa gageana
Howdy, Pete!
I thought I had a handle on the large green, entire leaf margin Alocasia. My
understanding was that A. gageana had a green erect spathe, leaf sinus
reaching petiole; A. odora has a yellow erect spathe, and; A. macrorhiza had
a reflexed yellow spathe, with the leaf sinus not reaching the petiole. I am
not sure how A. robusta is separated out. So, I am surprised to hear that A.
gageana is a nomen dubium. Can you help me out on separating these beasts?
Cheers,
Christopher
D. Christopher Rogers
Invertebrate Ecologist
Telephone: 530.383.4798
EcoAnalysts, Inc.
PO Box 4098
Davis, CA 95616
USA
________________________________________
From: aroid-l-bounces@gizmoworks.com on behalf of Peter Boyce
Sent: Sat 08-Aug-09 6:58 PM
To: 'Discussion of aroids'
Subject: Re: [Aroid-l] Alocaisa gageana
Hi Barbara
This will be almost certainly Alocasia macrorrhizos in one of its numerous
colour forms. Alocasia gageana was described from northern Burma and is an
nom. dub.
Peter
From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com]
On Behalf Of Barbara
Sent: 07 August 2009 05:28
To: aroid-l@gizmoworks.com
Subject: [Aroid-l] Alocaisa gageana
I purchased a plant labeled as Alocasia gageana aurea variegata but think I
read somewhere that aurea is not the proper name. I did a search on the
Aroidean but did not find the correct name. I am a novice but would like to
make sure the names are correct. I would appreciate any help.
Barbara
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