LEGUMINOSAE. 223 



Flowers in spikes or racemes on axillary peduncles. 



Annuals; peduncles few-flowered. V. hirsuta. 



Perennials; peduncles mostly many-flowered. 



Flowers ochroleucous or tawny. V. gigantea. 



Flowers violet or bluish-purple, rarely white. 



Raceme 1-sided, densely 15-40-flowered. V. cracca. 



Raceme loosely 5-20-flowered, not 1-sided. V. americana. 



Vicia sativa L. Common Vetch. Tares. Pubescent or glabrous; stems 

 erect, 30-60 cm. high; leaflets 5-7 pairs, variable in form, obovate, oblong or 

 oblanceolate, usually notched and mucronate; flowers violet-purple, 2-3 cm. 

 long; pods brown, 4-8 cm. long; seeds somewhat compressed. 



Introduced in waste places and cultivated. 



Vicia angustifolia (L.) Roth. Much like V. sativa, but the leaflets 

 narrow, linear; flowers 1-1.8 cm. long; pods black, 4-6 cm. long; seeds globose. 

 Introduced from Europe. 



Vicia hirsuta (L.) Koch. Annual, glabrous or nearly so; stems very 

 slender, 30-60 cm. high; leaflets 6-8 pairs, oblong or linear, obtuse; flowers 

 very small, 3 mm. long, whitish or bluish, in small racemes. 



Sparingly introduced. 



Vicia gigantea Hook. Somewhat pubescent, rather succulent, drying 

 black; stems about 1 m. high; leaflets 10-15 pairs, oblong, obtuse, mucronate; 

 racemes close, 5-20-flowered; corolla ochroleucous. 



In moist woods, common. First found on the Columbia River by Douglas 

 and by Scouler. 



Vicia cracca L. Perennial, soft pubescent; stems stout, 30-90 cm. high; 

 leaflets 20-24, oblong or lanceolate, mucronate; racemes dense, one-sided; 

 flowers blue or purplish. 



Whatcom County, Washington, Gardner, Suksdorf. 



Vicia americana Muhl. Perennial, stout or slender, 30-100 cm. high, 

 nearly glabrous; leaflets 4-8 pairs, usually elliptic or ovate, obtuse or truncate, 

 mucronulate, entire or toothed above, glabrous above, minutely puberulent 

 beneath, about 2 cm. long; tendrils well developed; stipules deeply toothed; 

 peduncles usually shorter than the leaves, 4-8-flowered; flowers purple- violet, 

 15-20 mm. long, short-pedicelled; calyx-tube campanulate with short broad 

 unequal teeth, somewhat pubescent; pods glabrous, 24 cm. long, 6-8 mm. 

 broad. 



In thickets, common. 



Vicia americana minor Hook. ( V. americana linearis Wats.) Leaflets 

 linear, acute. 



In dry ground, infrequent. 



295. LATHYRUS. VETCHLING. 



Mostly smooth perennial herbaceous vines or erect herbs; 

 leaves pinnate, mostly with tendrils or tendrils much reduced or 

 wanting; flowers in racemes or sometimes solitary; peduncles 

 usually equalling or exceeding the leaves and several-flowered; 

 calyx-teeth nearly equal or the upper ones somewhat shorter than 

 the lower; corolla rather larger than in Vicia; stamens diadelphous 

 or monadelphous below; style dorsally flattened near the top, 

 hairy on the inner side; ovules generally numerous; pod flat or 

 terete, 2-valved. 



