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LEGUMIN OSAE 
leaflets usually many, oblong or oblong-ovate; racemes dense; flowers 
whitish; pods early reflexed, ovoid.—Sandy slopes near the coast. 
5. A. hornii Gray. Sheep Loco. Stems slender, widely spreading, 
8.6 to 11.5 dm. long; leaflets about 21, narrowly oblong; flowers in dense 
capitate spikes, yellowish-white; pods broadly ovate, acuminate, straight, 
pilose, 6 to 15-seeded.—Upper San Joaquin Valley to the San Bernardino 
Valley. 
6. A. trichopodus Gray. Stout, erect, 3 to 8 dm. high; leaflets numer¬ 
ous, narrowly oblong or cuneate-oblong; racemes short, dense; flowers 
yellowish-white; pods narrowly elliptic.—Santa Barbara Co. to Los An¬ 
geles Co. 
7. A. pycnostachyus Gray. Stem rather stout, 3 to 8 dm. high; leaf¬ 
lets 23 to 31, narowly oblong, crowded; flowers whitish or yellowish, in 
dense spikes; pods ovate, veined, retrorsely imbricated.—Along the coast. 
8. A. didymocarpus H. & A. Slender pubescent plants 7.2 to 24 cm. 
high; leaflets oblong to linear and more or less cuneate, notched at apex, 
6 to 10 mm. long; spikes capitate or oblong; flowers 3 to 5 mm. long, 
dull purplish; calyx black-hairy; pods erect, little exserted from the 
calyx.—Low hills. 
9. A. nigrescens Nutt. Similar to no. 8; spikes cylindrical; pods de- 
flexed, well exserted from the calyx.—Hill country. 
10. A. tener Gray. Slender plants 9.6 to 21 cm. high; leaflets 9 to 15, 
linear or cuneate ; flowers purple and white, 10 mm. long, in a capitate 
inflorescence; pod silvery when young, glabrous when mature, 1.6 cm. 
long, 5 to 10-seeded.—Alkaline fields. 
12. ARACHIS L. 
Annual herbs with pinnate leaves. Leaflets 4. Flowers in a dense 
axillary sessile spike. Ovary stipitate. Stipe elongating and carrying the 
immature fruit beneath the ground where it ripens. Pod indehiscent, 1 to 
3-seeded. (Greek, a, without, and rachis, rachis.) 
1. A. hypogaea L. Peanut. Goober. Stems procumbent; leaves 
abruptly pinnate; leaflets 2 pairs.—Cult, from S. Am. 
13. VICIA L. Vetch. Tare 
Herbs with weak angular stems, often slightly climbing. Leaves pin¬ 
nate, with semi-sagittate stipules, the rachis ending in a simple or 
branched, tendril. Flowers solitary or racemose on axillary peduncles. 
Calyx 5-toothed, the 3 lower teeth often longer. Stamens more or less 
in 2 sets. Style with a tuft of hairs below the stigma. Pod flat, 2 to 
several-seeded. (Classical Latin name.) 
Annuals; flowers 1 or 2 in a cluster. 
Flowers subsessile in the axils..1. V. sativa. 
Flowers on a peduncle...2. V. exigua. 
Perennials ; flowers many or several in a cluster. 
Leaflets 8 to 14, broadly oblong.3. V. americana. 
Leaflets 20 to 30, narrowly oblong.4. V. gigantea. 
1. V. sativa L. Common Vetch. Stem slender, 3 to 5 dm. high; 
leaflets 6 to 12, oblong or linear, truncate or retuse, mucronate; flowers 
sub-sessile in the axils.—Nat. from Eur. 
