322 
Astragalus tener, (H. and A.) Gray, Proc. Am. Acad. vi. 206. 
Near Yuba City. 
Lotus Wrangelianus, F. and M. Ind. Sem. Petr. 16. 
Base of South Peak. 
Lotus nudiflorus, (Nutt.) Greene, Pitt. ii. 141. 
The quadrate seeds with a rather marked notch. | Not pre- 
viously known north of Mt. Diablo; low hills, Butte Pass. 
Trifolium gracilentum, Torr. and Gray, FI. i. 316. 
Sutter City. 
Trifolium ciliolatum, (Nutt.) Benth. P]. Hartw. 304. 
Sutter City. 
Trifolium columbinum, Greene, Pitt. i. 4. 
A depauperate form. Sutter plains. 
Trifolium variegatum, Nutt. in T. and G. FI. i. 317. 
Base of South Peak. 
TRIFOLIUM TRILOBATUM. Annual, a span high, branched from 
the base and glabrous throughout; lower leaflets finely ser- 
rate or occasionally with coarsely toothed summits; upper 
leaves on peduncles one to two inches long; leaflets spinulose 
serrate, cuspidate, narrowly rhombic, often abruptly con- 
tracted above the middle, and even becoming three lobed ; 
stipules nearly orbicular, with setaceous teeth, but not deeply 
cleft; involucre irregularly incised with spinulose divisions ; 
calyx tube nearly a line long, with setaceous purple teeth a 
line and a half long; corolla four to seven lines long, purple 
with white-tipped banner. 
The flowers are large for the slender habit of the plant, which 
grew in quite a mass by the side of a mountain brook at the base 
of South Peak. 
Trifolium Watsoni, Loja. Giorn. Ital. xv. 186. 
Hardly typical. Base of South Peak. 
Trifolium microcephalum, Pursh, FI. ii. 478. 
Yuba City. . 
Trifolium fucatum, Lindl. Bot. Reg. t. — 
Sutter plains. 
Lupinus micranthus, Doug}. in Bot. Reg. t. 12 51, 
Lupinus affinis, Agardh, Syn. 20, 
Yuba City, 
