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  Re: Jack in the Pulpit
From: grsjr at juno.com (George R Stilwell, Jr.) on 1997.02.04 at 00:40:10(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.

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