1906] HOUSE—NEW SPECIES OF TRIFOLIUM | 
denticulate, glabrous above, silky-pubescent beneath, 15 to 25™™ 
long, 4 to 7”™ wide; leaflets of the lower leaves relatively broader 
and shorter, nearly obovate-cuneate, acute or rounded; petioles 
mostly shorter than leaflets, but lower ones longer: inflorescence 
usually solitary; peduncles 5 to 8°™ long, somewhat woolly-pubes- 
cent above with whitish hairs, densely many-flowered in a globose 
head; flowers sessile, the outermost spreading or becoming reflexed, 
ro to 13™™ long: calyx silky-pubescent or becoming glabrate, tube 
1.5 to 2.5™™ long, the five filiform-subulate teeth straight, 8 to 
1o™™ long, upper ones shortest and scarcely more than 8™™ long, 
sometimes shorter: banner sublanceolate, broadest (about 5™™) below 
the middle, acuminate-pointed at the apex; wings and keel shorter, 
wings conspicuously attenuate-pointed, keel acute: legume stipitate, 
2-seeded. 
North side of Mt. Shasta, Siskiyou Co., California, 1500-2700™ alt. Col- 
lected by H. E. Brown (no. 362), type in the U. S. National Herbarium, June 
11-16, 1897. No. 365, of the same collection is identieal. 
Remarkable for its sharply serrated and pointed leaflets, acuminate-pointed 
banner, and attenuate-pointed wings. 
Trifolium Covillei, sp. nov.—Fig. 5.—Related to T. latijolium. 
Stems very short and leafy, several from a solitary, perpendicular 
thickened perennial root and appearing as a 
dense green mat at its apex, the root 10 to 
20° deep; stems 1 to 3° long: stipules 
small, ovate, 5 to 7™™ long, blunt and often 
rounded at apex, entire, adnate to the petiole 
for two-thirds their length; leaflets obovate- 
| subcuneate, rounded or retuse at apex, rarely 
the upper acute, margins finely but not sharp- 
ly or conspicuouly toothed, 6 to 12 ™™ long, 
silky pubescent beneath, glabrous above; 
petioles mostly shorter or but little longer 
than the leaflets: peduncles 8 to 10°™ long, 
much exceeding the leafy part of the plant, 
silky-pubescent above; heads globose, 40 to 
60-flowered, 2 to 2.5°™ in diameter, some of 
Fic. 5.—Trifolium Covillei the flowers spreading or becoming reflexed, 
House. 
