154 GERANIACEAE. 



Astragalus adsurgens Pall. Herbage puberulent with fine white appressed 

 hairs or becoming glabrous; stems ascending, 20-50 cm. high; leaflets 7-12 

 pairs, oblong, obtuse, 2-2.5 cm. long; peduncles exceeding the leaves; flowers 

 purplish, nearly sessile, in dense oblong spikes; bracts lanceolate, shorter than 

 the calyx; calyx-teeth subulate, half as long as the tube; pods erect, oblong, 

 straight, 8-10 mm. long, finely pubescent, triangular-compressed, with a deep 

 dorsal furrow. Silver Lake, Spokane County. This is originally from Siberia 

 but our plant is the same species. 



Astragalus hypoglottis L. Herbage somewhat hairy; stems slender, pro- 

 cumbent or ascending, 8-15 cm. long; leaflets 7-10 pairs, oblong to obovate, 

 obtuse to retuse; peduncles longer than the leaves; flowers violet, in a short 

 dense head; bracts longer than the hairy calyx; calyx-teeth subulate as long 

 as the tube; pods ovate, straight, triangular-compressed, silky-villous. In 

 damp meadows; our plant varies from the European type and is also known 

 as Astragalus agreslis Dougl. 



Astragalus reventus Gray. Erect, 30-60 cm. high, with harsh appressed 

 puberulence; leaves erect or ascending; leaflets 10-15 pairs, linear, usually 

 obtuse or truncate, cuneate at base, subsessile; peduncles stout, much longer 

 than the leaves; flowers whitish, in rather dense erect racemes; calyx 5 mm. 

 long, black-pubescent, the tube campanulate, twice as long as the acute teeth; 

 corolla 10 mm. long; pods transversely roughened, wrinkled, turgid, the dorsal 

 suture not impressed, from narrowly ovoid to globose, stout-beaked, 1.5-2 

 cm. long. Bluffs of Snake River. 



Astragalus viridis (Nutt.) Sheldon. Herbage silky-canescent; stems much 

 branched, spreading, forming circular mats; leaflets 2 or 3 pairs, linear-subu- 

 late, rigid, spine-tipped, 1-2 cm. long; flowers yellowish or purplish, solitary 

 or two or three and nearly sessile in the axils; calyx hairy, the teeth subequal; 

 pods ovate, compressed, pubescent, usually containing one seed. High ridges 

 of the Blue Mountains. 



Family 47. GERANIACEAE. GERANIUM FAMILY. 



Annual or perennial herbs; leaves basal, alternate or opposite, 

 often with stipules; flowers solitary or clustered, perfect, regular, 

 commonly symmetrical, the parts in fives; sepals persistent; 

 stamens usually twice as many as the petals, mostly in two sets, 

 those alternate with the petals sometimes sterile; ovary 1, deeply 

 3-5-lobed and 3-5-celled ; ovules 2 in each cavity; fruit a capsule; 

 carpels 1-seeded, separating when mature from the axis. 



Leaves palmate, variously cleft or divided. GERANIUM, 154. 



Leaves pinnately compound (in ours). ERODIUM, 155. 



216. GERANIUM. WILD GERANIUM. 



Annual or perennial herbs; leaves palmately-lobed, cleft or 

 divided, with stipules; flowers regular, on axillary 1-2-flowered 

 peduncles; sepals 5; petals 5, hypogynous; stamens 10, rarely 5, 

 generally 5 longer and 5 shorter; ovary 5-lobed, 5-celled, beaked 

 with a compound style; capsule 5-celled, each 1-seeded, and long- 

 tailed, at maturity separating from the long beak of the recep- 

 tacle, splitting from below upward. 



