[Taxacom] The cashew - nut or drupe?

Susan Pell susanpell at bbg.org
Tue Jan 29 09:06:13 CST 2008

As with most members of Anacardiaceae, the fruit of the cashew is a drupe.
The rather fleshy structure subtending the fruit is a hypocarp, which is
formed by the elongation and expansion of the pedicel. There are several
excellent papers on Anacardium, but a good place to start is John Mitchell
and Scott Mori's monograph:

Mitchell, J. D., and S. A. Mori. 1987. The cashew and its relatives
(Anacardium: Anacardiaceae). Memoirs of the New York Botanical Garden 42:
Pages 13-16 contain a detailed description of fruit and hypocarp development
and structure.


Susan K. Pell, Ph.D.
Molecular Plant Systematist and Laboratory Manager
Brooklyn Botanic Garden
1000 Washington Ave.
Brooklyn, NY 11225
phone: 718-623-7371
fax: 718-941-4774
email: susanpell at bbg.org

-----Original Message-----
From: taxacom-bounces at mailman.nhm.ku.edu
[mailto:taxacom-bounces at mailman.nhm.ku.edu] On Behalf Of
john.steel at botany.otago.ac.nz
Sent: Monday, January 28, 2008 10:28 PM
To: taxacom at mailman.nhm.ku.edu
Subject: [Taxacom] The cashew - nut or drupe?

    Does anyone know of a paper giving an accurate description of
the 'nut' part 
(not the aril) of the cashew (Anacardium occidentale)?  I need to
determine whether it
should be a drupe or a nut (in the sense of a dry, indehiscent, woody,
single seeded, 
syncarpous fruit).

    A more daring request is for the earliest, published definition
of nut!

Thanks for your tolerance,  John Steel.
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