238 LEGUMINOSAK. 



ing Beveral ft. high and often forming extensive tannics and draperies over 

 shrubs; leaflets 20 to 30, narrowly oblong or tapering somewhat from the base 

 to the obtuse mucronulate apex; peduncles 7 t<» L8-flowered; calyx short, 

 lower teeth al>out equaling the tube; corolla (5 or 7 lines long, pale purple or 

 pale saffron; pod oblong, P L » in. Long, glabrous, ."> or 4 seeded. 



Along streams: Sao Francisco and Oakland northward near the coast. 

 Mar.-. I une. Herbage blackening in drying. 



14. LATHYRUS L. Pea. 

 Herbs, ours perennial. In technical character and in habit very similar 

 to Vicia. Banner roundish or very broad. Upper teeth of calyx commonly 

 shorter than the lower. Leaflets usually larger, in ours 3 to 5 pairs, mostly 

 mucronate; rachis in some species not prolonged into a tendril. Style flat- 

 tish, hairy along the upper side only, i. e., next the free stamen. Seeds as in 

 the preceding. (Old Greek name of the Pea.) 



Leaves without tendrils; pod shortly stipitate. 



Peduncle short, 1 or 2-flowered; stipules small 1. L. torrcyi. 



Peduncle longer than the leaves, 2 to 6-flowered; stipules larger than the leaflets 



2. L. littoralis. 

 Leaves tendril-bearing; racemes many-flowered; pod sessile. 

 Stems angled. 



Herbage dark green, more or less pubescent; diffuse or climbing plants; leaflets 1 in. 

 long; stipules narrowly semi-sagittate, the lobes mostly lanceolate and entire; 



corolla purplish or purplish-tinged 3. L. vcstitus. 



Herbage light green, glabrous; leaflets mostly exceeding 1 in., obtuse at base and 

 apex; stipules large, broadly semi-sagittate, ovate, acuminate, the basal lobe broad, 



rounded and toothed; corolla rose-purple 4. L. bolandcri. 



Stems winged, the wing commonly herbaceous; stipules small, commonly entire. - 



Herbage puberulent but seemingly glaucous; leaflets elliptic- to narrowly-oblong. 1 V 2 

 to 2 in. long, acute at both ends, with long straight nerves from or near the 



base; corolla white or yellowish white, purple-veined S. L. watsonii. 



Herbage glabrous or nearly so; leaflets linear-lanceolate, about iy 2 in. long; corolla 

 rose-purple 6. L. jepsonii. 



1. L. torreyi Gray. Erect, very slender, l to '.' in. high; herbage light 

 -reen. sparingly villous; leaflets thin, elliptic to ovate or oblong. .", to 7 lines 

 long; Leaves with a terminal leaflet or the rachis merely ending in a point; 

 stipules small, semi-sagittate, lanceolate, the lower lobe very short; flowers <i 

 lines long; calyx-teeth subulate, exceeding the tube, or the upper shorter and 

 broader; banner pale lilac, keel and wings white; pod linear-oblong, pubescent, 



1 in. long, 3 to 5-seeded. 



Shady woods: Santa Clara Co. and Napa Valley, Cahto and northward to 

 Humboldt Co. 



2. L. littoralis (Xutt.) Endl. Beach Pea, Stems many from creep- 

 in- rootstocks, stout, decumbent; herbage densely silky-villous. suggestive of 

 a hairy Lupine; Leaflets 1 to ."» pairs with a usually smaller or imperfect terminal 



one. euneate-oblong, I to 6 lines long; stipules ovate or somewhat hastate, 



2 or :; times as Large as the Leaflets; peduncles exceeding the Leaves; flowers 



6 t.» 8 lines long; calyx teeth nearly equal, as long as the tube; banner purple, 

 the keel and wings whit.' OT nearly so; pod oblong. I in. long, villous, 2 to 5- 



Beeded. 



Maritime: seashore of San Lrancisco and Marin cos. and northward. 



3. L. vestitus Xutt. var. puberulus Jepson. Low .and herbaceous, or 

 climbing several feet high on shrubs and woody below; stems angled; Leaf- 

 lets puberulent under a lens, dark green. Lighter OH the under surface. ] in. 

 long, L' to I lines wide, tapering to both ends from the middle, usually more 



acute al apei than at base, mucronulate; raceme many-flowered on a rather 





