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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.
Jack in the Pulpit
From: schwartzl at juno.com (Linda M Schwartz) on 1997.02.03 at 06:37:22(289)|
I am looking from some specific info that perhaps some expert gardener
can answer. I am writing a paper on the ecology of the
In some of the references I have used, it is stated that the sex of the|
plant is dependent upon the age, soil conditions and nutrition level of
plant. What I need to know is -- what are those soil conditions, age,
levels. I have not been able to find a reference that addresses this
point. If anyone can provide me with these details, I would be eternally
:) . If the material comes from a book, I would need its title,
authors, place of publication, publisher and copyright date. If the info
is coming from your
expertise, I would need to know your qualifications for making the
Thank you for any assistance you can provide. If you think you know a
person I can contact that might be able to answer this, I would be
grateful for any leads also. You can e-mail me at
email@example.com. Linda Schwartz
From: grsjr at juno.com (George R Stilwell, Jr.) on 1997.02.03 at 16:40:10(294)|
Here are the original sources:
Richardson, C. & K. Clay 1995. The evolution and maintenance of sex
change in Arisaema triphyllum.
Am. J. of Botany, Supplement 82(6):55.
Wurdack, John J. 1983. Sex and Size in Arisaema. Bulletin of the American
Rock Garden Society. 41(1):9-10.
Bierzychudek, Paulette. 1981. The demography of Jack-in-the-Pulpit, a
forest perennial that changes sex. PhD thesis.
Cornell Univ. 145 pages.
I don't have a record of other papers on the subject, but these papers
probably have bibliographies.
It is well understood that Arisaema starts it's sex life neuter, becomes
male in the second season, turns female in a couple of years if growing
conditions are good. Poor conditions will cause it to revert to male and
even stay dormant for a whole season, worst case. Inadequate moisture is
probably the principal problem. Hopefully the references will expound
upon the subject.
You might be interested to know that some Arisaema species grow only a|
corm and roots the first season (no leaf appears). The second season the
leaf appears and all is normal. Needless to say, many good seedlings go
to the dump before people learn about this trait.
By the way, John Wurdak is a member of the Arisaema Enthusiast's Group
and might be very helpful. He is not on-line, so you'll have to write to
4400 Samar St.
Beltsville, MD 20705
From: "Marge Talt" <mtalt at clark.net> on 1997.02.03 at 20:03:36(297)|
I don't know the specific answer to your question, however, I am certain
that members of the Aroid-L mailing list would. I can either forward this
to that list (I'm new on it and basically lurk - I think it is a monitored
list - nice people) below are instructions on how to join the list so you
can post your question yourself, if you'd like. If you are interested in
Arisaema, you really should join the list. There are also some aroid pages
on the web. The URL for the International Aroid Society is:
URL for the Arisaema Page is:
Hope this helps, let me know if you want me to cross post for you.
BTW, I grow the common jack-in-the-pulpit, Arisaema triphyllum, and I've
never noticed a variance of sex. Seems to me that the plants have to reach
a certain age before they flower and set seed and once they start, they
just keep on doing it. I'm sure there are people on Aroid-L who know a
whole lot more about it than I do, tho'. Nifty plants, I'm starting to get
more of them - different kinds and trying to grow some besides A.
triphyllum from seed.
Marge Talt, zone 7 Maryland
Editor: Gardening in Shade
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> From: Linda M Schwartz
> To: firstname.lastname@example.org
> Subject: Jack in the Pulpit
> Date: Monday, February 03, 1997 9:38 AM
> I am looking from some specific info that perhaps some expert gardener
> can answer. I am writing a paper on the ecology of the
> In some of the references I have used, it is stated that the sex of the
> plant is dependent upon the age, soil conditions and nutrition level of
> the individual
> plant. What I need to know is -- what are those soil conditions, age,
> levels. I have not been able to find a reference that addresses this
> point. If anyone can provide me with these details, I would be eternally
> :) . If the material comes from a book, I would need its title,
> authors, place of publication, publisher and copyright date. If the info
> is coming from your
> expertise, I would need to know your qualifications for making the
> Thank you for any assistance you can provide. If you think you know a
> site or
> person I can contact that might be able to answer this, I would be
> grateful for any leads also. You can e-mail me at
> email@example.com. Linda Schwartz
From: "Marge Talt" <mtalt at clark.net> on 1997.02.04 at 07:46:23(299)|
Apologies to this list. My face is red. Thought I was replying to a post
on another list and sending a private response! Nice way to de-lurk, if I
do say so :-(
Marge Talt, zone 7 Maryland
Editor: Gardening in Shade|
> From: Marge Talt
> To: firstname.lastname@example.org
> Subject: Re: Jack in the Pulpit
> Date: Monday, February 03, 1997 10:18 PM
> Hi Linda,
> I don't know the specific answer to your question, however, I am certain
> that members of the Aroid-L mailing list would. I can either forward
(balance deleted - I've wasted enough bandwith already)
From: SHoltz1036 at aol.com on 1997.02.05 at 05:32:45(304)|
A man by the name of Keith Clay did a couple of papers on flower size in A.
draconitum; I know that this is not the species that you are writing the
paper on, but it may help and you can reference them. All I can tell you
(and this is from scant memory) is that Keith Clay was a professor at Indiana
University as of a couple of years ago; he has written at least one paper on
A. draconitum flower size; I can't remember the journal (the only reason I
remember this much is because I did an undergraduate teaching internship
under him a couple of years ago and recognised the name). However, you can
reference his name in a scientific journal index; as a matter of fact, a
scientific journal index search would be well worth your while if you can get
to a university with a biology department.
Lots of luck -
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