NEW AND NOTEWORTHY NORTH AMERICAN SPECIES 
OF TRIFOLIUM. 
HoMER DOLIVER HOUSE, 
(WITH TWELVE FIGURES) 
I. NEW OR NOTEWORTHY SPECIES OF THE UNITED STATES. 
THE following notes upon the genus Trifolium are based upon 
material in the National Herbarium. All figures x 1}. 
Trifolium Greenei, nom. nov.—(f7g. 1). 
—T. bifidum decipiens Greene, Fl. Fran. 
24. 1891; not TJ. decipiens Hornem., 
Hort. Hafn. 2:715. 1815.— Of much 
broader distribution and apparently not 
merging into T. bifidum Gray, though 
closely related to that species. It has 
more of the general appearance of T. 
gracilentum T. & G., but distinguished 
from it by its villous-pubescent peduncles 
and cuneate-oblong, subglaucous, and re- 
tuse leaflets. 
Low moist places or natural grassy meadows, 
from San Diego to Mendocino and Butte Counties, 
California. The type, collected at Berkeley by 
Greene, is in the herbarium of Professor Greene. 
TRIFOLIUN BIFIDUM Gray (fig. 2) seems 
to be a species peculiar to the bay region 
of California only; the type, collected by 
Brewer (no. 1184, 1862), “near Marsh’s 
Ranch, between Monte Diablo and the 
San Joaquin (Contra Costa Co.), among 
[ grass in a ravine near the water, May ai 
Fic. 1.—Trijolium Greenei is in the National Herbarium. 
House: @, portion of type. Trrrotium BRrEwERI S. Wats., Proc. 
Sea naa es Am. Acad. 11:131. 1876.—T. amabile Loja. 
leaves; d, banner. Nuovo Giorn. Bot. 15:142. 1883, ex descr. 
Botanical Gazette, vol. 41] [334 
