extinct species

[Dean Wm Taylor]

Dick et alia
The List of presumed extinct taxa on the Jepson Interchage is not
current.  Here is a list of the 'rediscoveries' I am aware of from by
contact or literature.  The Jepson Manual status list WAS current as of
the effective date when the treatment passed through final edits, in
some cases over a decade now...All told, there have been ca. 80 taxa on
the 'presumed extinct' list for California, but most have been relocated
eventually; the overwhelming problem is the evidence of absence/absence
of evidence dilemma

Astragalus pycnostachyus var. lanosissimus - rediscovered 1997

Astragalus tener var. ferrisiae - collected in 1989, determined as a
rediscovery in ca. 1992

Atriplex parishii - rediscovered in 1992

Chorizanthe orcuttiana - known from 3 occurrences, date of relocation??

Clarkia mosquinii - rediscovered 1991, as to the two chromosome races
named as subspecies, both have apparently been found (Gottleib and
Janeway in prog.?)

Helianthus nuttallii subsp. parishii - relocated 2001, on a site about
to become a huge mega home development

Orthocarpus pachystachyus - rediscovered in 1996

Plagiobothrys glaber - rediscovered in 2002

Sidalcea keckii - relocated some years ago, ca. 1995? Two known sites
are extant

Trifolium amoenum - somewhat famous since it is in cultivation at Bodega
Lab, relocated ca 1996


---------------------------
Dr. Dean Taylor
Research Associate, Jepson Herbarium
University of California
1001 Valley Life Science Bldg. #2465
Berkeley, CA 94720-2465 U.S.A.
MY SEDGE PAGE - http://128.32.109.44/dtscn3.html
MY BIO
http://ucjeps.berkeley.edu/people/dwt/DTaylor.html
MY 15NANOSECONDS
http://www.calacademy.org/publications/calwild/summer2000/html/horizons.
html





-----Original Message-----
From: Taxacom Discussion List [mailto:TAXACOM at USOBI.ORG] On Behalf Of
Richard Moe
Sent: Friday, January 24, 2003 11:53 AM
To: TAXACOM at USOBI.ORG
Subject: Re: extinct species

There's a page of California taxa mentioned as presumed extinct in The
Jepson Manual on the Jepson Interchange:
http://ucjeps.berkeley.edu/interchange/I_status_7.html

Richard Moe