J-'/ora of the Palouse Region toy 



A. inortoni Nutt. Erect, 30-80 cm. high, minutely appressed-pubescent 

 but green: leaves 10-15 cm. long; leaflets 7-10 pairs, ovate, oblong or obo- 

 vate, truncate or notched at the apex, rounded or cuneate at the base, 1.5-2.5 

 cm. long: peduncles as long as or longer than the leaves, stout: spikes dense, 

 5-10 cm. long: flowers reflexed but the fruit erect: calyx campanulate, gib- 

 bous, 7-8 mm. long, the triangular acuminate teeth shorter than the tube: 

 corolla greenish, 12-15 mm. long: pods sessile, densely crowded, linear, 10- 

 15 mm. long, 3-4 mm. thick, with a slender, hooked beak. Open woods, 

 Thatuna Hills, also along Snake River. 



A. arrectus Gray. (A. palousensis Piper.) Erect, 30-60 cm. high, 

 sparsely appressed-pubescent throughout: leaves erect or ascending, 10-20 

 cm. long; leaflets about 15 pairs, oblong, somewhat truncate, cuneate at base, 

 glabrous above, pubescent beneath, 1-2 cm. long: 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 

 short acute teeth: corolla 10-12 mm. long: pods linear, short-beaked, 12-16 

 mm. long, 5 mm. wide, thinly puberulent, slightly roughened, the dorsal 

 suture pressed inwards, the stipitate base as long as the calvx. Grassy hill- 

 sides, not rare. 



A. reventUS Gray. Very similar to the preceding but with harsher ap- 

 pressedpuberulence;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. 



173. CxLYCYRRHIZA. 



Perennial punctate-glandular herbs: roots long, thick, sweet: 

 leaves odd-pinnate, with minute deciduous stipules: flowers white 

 or bluish, in axillary spikes: calyx with the two upper lobes 

 shorter or partly united: stamens monadelphous or diadeiphous: 

 anther-sacs confluent at the apex, the alternate ones smaller: pod 

 prickly, ovate or oblong-linear, compressed, often curved, few- 

 seeded. 



G. lepidota Nutt. Erect, stout, .5-1 m. high, glandular-puberulent 

 throughout: leaves 10-20 cm. long; leaflets 6-8 pairs, oblong-lanceolate, 

 acuminate, mucronate, 3-5 cm. long, glandular-punctate: peduncles shorter 

 than the leaves: spikes dense, 3-6 cm. long: flowers greenish-yellow, about 

 1 cm. long: calyx campanulate, 6-8 mm. long, the acute teeth about as long 

 as the tube: pods 1.5 cm. long, thickly armed with long hooked prickles. 

 Hanks of Snake River. 



174. VICIA. 



Climbing or trailing herbaceous vines: leaves pinnate, tendril- 

 bearing, with half-sagittate or entire stipules: flowers solitary or 

 in loose peduncled axillary racemes: calyx 5-cleft or toothed, un- 

 equal, the two upper teeth often shorter or the lowest longer: wings 

 adherent to the short keel: stamens diadeiphous or nearly so: style 

 fililorm, the apex or the lower side hairy; ovary 2 many-ovuled: 

 pod flat, 2-valved, 2 several-seeded. 



