[Taxacom] species known only from type

[Peter B. Phillipson]

Dear Tatyana (and others who may be interested)

I can give you some figures for vascular plants of Madagascar.

Of a sample of 1872 accepted species, representing an estimated 13-15 %
of the entire angiosperm flora, for which we have assessed the taxonomy
and reviewed the existing specimen base, 119 species (6.35%) are only
known from the type specimen and an additional 122 species (6.51%) are
only known from the type locality. Only 125 of these 241 species occur
in a protected area. There is no reason why this data should be skewed
towards either high or low values for the species included. Our data-set
is growing, and can be consulted at The Vahinala Project - The Catalogue
of Vascular Plants of Madagascar website: www.efloras.org/madagascar.

I would be very interested to hear how this compares with data for other
areas and groups of organisms.

Pete
____________________________________________

Peter B. Phillipson
Africa and Madagascar Department
Missouri Botanical Garden
based at the Muséum National d'Histoire Naturelle, Paris, France
Tel.: office +33 (0)1 40 79 33 71
        home +33 (0)1 64 09 26 80
        cell +33 (0)6 32 59 91 49
Fax: France +33 (0)1 40 79 33 37; US 707 897 7481
alternate email: pphillipson at gmail.com
Instant messages: Skype - PetePhillipson;
Yahoo - pphillipson; MSN - Pete Phillipson. 
____________________________________________  


-----Original Message-----
From: taxacom-bounces at mailman.nhm.ku.edu
[mailto:taxacom-bounces at mailman.nhm.ku.edu] On Behalf Of Tatyana
Livshultz
Sent: 12 February 2007 00:15
To: taxacom at mailman.nhm.ku.edu
Subject: [Taxacom] species known only from type


Hello:

I'm looking for articles that discuss the percentage of species known
only 
from their type specimens. I'm particularly interested in this
information 
for extant angiosperm.

Thanks for your help.

Regards, 

Dr. Tatyana Livshultz
Department of Biology
University of Nebraska Omaha
6001 Dodge St.
Omaha, NE 68182-0040
USA
tel. 402-554-6014
fax 402-554-3532
email tlivshultz at mail.unomaha.edu
http://www.unomaha.edu/biology/livshultz.html
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