LEGUMINOSAE (PEA FAMILY) 295 



membranaceous and chartaceous, 7-12 mm. long, tipped with a straight 

 point, one-celled with no introflexion of the ventral suture, or nearly half 

 2-celled, silky-canescent. Mountains of Wyoming, Dakota, and northward. 



14. Aragallus Lambertii (Pursh) Greene, 1. c. Commonly taller as well as 

 larger, the scapes often 3 dm. or more high, silky- and most silvery-pubescent, 

 sometimes glabrate in age: leaflets oblong-lanceolate to linear, 8-30 mm. 

 long: spike sometimes short-oblong and densely-flowered at least when young, 

 often elongated and sparsely flowered; flowers mostly large, often 25 mm. 

 long, but sometimes much smaller, mostly purple or purplish: pod either nar- 

 rowly or broadly oblong, sericeous-pubescent, firm-coriaceous, 12 mm. or 

 more long, imperfectly 2-celled. Includes Oxytropis campestris of Hook. Fl. 

 Bor. Am. in part. (A. patens, A. angustatus, and A. atropurpureus Rydb. 

 Bull. Torr. Bot. Club 34: 421-4. 1907.)- T Common along the Great Plains from 

 the Saskatchewan to New Mexico, and in the foothills. 



14a. Aragallus Lambertii sericeus (Nutt.) A. Nels. 1. c. 62. Leaflets 

 broader, more silky: spike robust. [A. sericeus (Nutt.) Greene.] Same range. 



15. Aragallus alpicola Rydb. Mem. N. Y. Bot. Card. 1: 252. 1900. De- 

 pressed-caespitose; the caudex clothed with leaf remnants: leaves numerous, 

 white-silky; leaflets 8-13, oblong, 5-8 mm. long: scape short, depressed or 

 ascending, 3-8-flowered: calyx cylindric, densely black-hairy: corolla 12-15 

 mm. long, sulphur-yellow; the keel purple-tipped: pod about 15 mm. long, 

 subcoriaceous, ovoid, beaked. Wyoming and Montana. 



16. Aragallus villosus Rydb. Bull. Torr. Bot. Club 28: 36. 1901. Intri- 

 cately caespitose: leaflets 25-31, 10-15 mm. long, lanceolate, acute, loosely 

 silky or hirsute: scapes 10-15 cm. high: spike dense: calyx white, silky- 

 villous: corolla ochroleucous: pod thin, 2-celled, white-silky, twice as long as 

 the calyx, tipped with a hooked beak. Replaces the eastern A. campestris in 

 the northern part of our range. 



17. Aragallus albiflorus A. Nels. 1. c. 62. Caudex densely tufted on the 

 crowns of a large root, clothed with hairy stipules and leaf-bases: leaflets 

 11-21, oblong to lanceolate, 15-25 mm. long, grayish or silvery with appressed 

 pubescence: scapes rather stout, 2-4 dm. high, at length distinctly surpassing 

 the leaves: calyx sericeous, some short black hairs intermingled: corolla white 

 or often ochroleucous; the keel usually purple-tipped: pod pubescent, oblong, 

 with a straight tip, at maturity about twice as long as the calyx; the ventral 

 suture somewhat intruded. (A. saximontanus A. Nels.) From New Mexico 

 to Montana. 



18. Aragallus Richardsonii (Hook.) Greene, Pitt. 4: 69. 1899. Silvery 

 silky-villous, l^i dm. high: stipules adnate to the petiole, imbricated on the 

 short branches of the caudex, which bear the leaves and scapes; leaflets nu- 

 merous, fascicled in threes or fours (or more) or as if verticillate : scape spicately 

 many-flowered; the flowers erect-spreading: calyx very hairy, white: corolla 

 rather large, bright blue: pod ovate, partly 2-celled, erect, acuminate, hairy, 

 much longer than the calyx. Oxytropis splendens. Mountain valleys; 

 throughout our range. 



11. GLYCYRRHIZA L. LICORICE 



Erect perennial herbs. Flowers in dense axillary pedunculate spikes, with 

 caducous bracts. Root large and sweet. Flowers nearly as in Astragalus. 

 Ovary sessile; style short and rigid. Pod compressed and often curved. 



1. Glycyrrhiza lepidota Pursh, Fl. Am. Sept. 480. 1814. Somewhat 

 glandular-puberulent, or the younger leaves slightly silky: stems erect, branch- 

 ing, 3-8 dm. high: leaflets 11-19, oblong-lanceolate, acute or obtuse: spike 

 short, the peduncle shorter than the leaves; flowers ochroleucous: pod thicklj 

 beset with hooked prickles, oblong, 1-2 cm. long. New Mexico to Canada 

 and west to the coast. 



12. AMORPHA. L. FALSE INDIGO. LEAD PLANT 

 Shrubs with odd-pinnate leaves, dotted and usually stipellate leaflets, and 



