204 
This list represents the first report of vascu- 
lar plants and lichens for the Prudhoe Bay area 
and includes further records of bryophytes. 
These records are excerpted from our Tundra 
Biome final project report. We have cited a 
single specimen of each taxon in order to docu- 
ment its presence in the Prudhoe Bay area and 
have not cited all collections seen. Unless other- 
wise stated, specimens are in the University of 
Alaska Herbarium (ALA), and_ identifications 
were made by the collectors. David F. Murray 
has verified the identification of all vascular 
plants cited. Other herbaria housing specimens 
cited are the University of Calgary Herbarium 
(UAC) and The New York Botanical Garden 
(NY). Generally, nomenclature follows Hultén 
(1968, 1973) for vascular plants; Worley (1970) 
for hepatics; Crum, Steere, and Anderson (1973) 
for mosses, excluding Mniaceae; Koponen 
(1968, 1972) for Mniaceae; and Hale and Cul- 
berson (1970) for lichens. Synonyms are in- 
cluded when they facilitate referral to specimens 
er when they are commonly used. 
Acknowledgments 
We wish to thank Tundra Biome personnel 
who sent us specimens and helped in the com- 
pilation of this report, especially M. W. Battrum, 
J. R. Rastorfer, D.A. Walker, and M.€E. 
Williams. We are deeply indebted to John W. 
Thomson, University of Wisconsin, Madison, 
who determined or verified most of the lichen 
specimens cited. William C. Steere, of The New 
York Botanical Garden, generously provided 
help with identifications in the field and in the 
laboratory. We are also grateful to him for 
permitting us to cite his unpublished collections 
from Prudhoe Bay. 
This project was supported through grants 
and contributions by the National Science 
Foundation under Grant GV 29342 to the Uni- 
versity of Alaska, the State of Alaska, and the 
Prudhoe Bay Environmental Subcommittee. It 
was performed under the joint NSF sponsorship 
of the International Biological Program and the 
Office of Polar Programs and was directed under 
the auspices of the U. S. Tundra Biome. 
Floristic Notes 
Noteworthy discoveries are: 
1. Puccinellia andersonii has been known in 
Alaska only from its type locality at Point Lay. 
The Prudhoe collection bridges a gap between 
Point Lay and Banks Island, Northwest Terri- 
tories (A. E. Porsild, /n /itt.). 
2. Thlaspi arcticum was found on a gravel 
terrace of the Kuparuk River. Numerous plants 
were seen which, in itself, is unusual. A collec- 
tion by Spetzman from the Sadlerochit River 
(Wiggins and Thomas 1962) is the only other 
Alaskan collection. This taxon is currently under 
study to determine its relationship to the Asian 
T. cochleariforme, but sufficient material is not 
available from all stages of development to 
adequately describe it. We are now examining 
the series of 7. arcticum we obtained, but viable 
seed would be most helpful. Since the locality of 
our collection is a gravel terrace adjacent to 
gravel deposits already mined for fill, this site 
should be identified so it can be protected. It is 
the only readily accessible source of this species. 
Thlaspi arcticum has now been placed on the 
Smithsonian list of threatened species, and this 
Prudhoe site should be protected from further 
disturbance. 
3. The lichens Lopadium fecundum, Poly- 
blastia bryophila, and P. sendtner/ have not been 
previously reported for Alaska, according to 
J. W. Thomson in //tt. 
References 
Crum, H., W.C. Steere, and L.E. Anderson 
(1973). A new list of mosses of North 
America north of Mexico. Bryo/ogist, 
76:85-130. 
Hale, M.E., Jr. and W. L. Culberson (1970). A 
fourth checklist of the lichens of the con- 
tinental United States and Canada. Bryo- 
logist, 73:499-543. 
Halliday, G. and A.O. Chater (1969). Carex 
marina Dewey, an earlier name for C. 
amblyorhyncha Krecz. Feddes Repertorium, 
80: 103-106. 
Hultén, E. (1968). ‘Flora of Alaska and Neigh- 
boring Territories.” Stanford University 
Press, Stanford, 1008 pp. 
Hultén, E. (1973). Supplement to Flora of 
Alaska and Neighboring Territories. Bot. 
Not., 126:459-512. 
