PA PIL ION A CEA E. 537 



3. Lupinus argenteus Pursh. SILVERY LUPINE. (I. F. f. 2059.) Rather 

 shrubby, bushy-branched, 3-6 dm. high, densely silky-pubescent with appressed 

 hairs. Petioles equalling or the lower exceeding the leaves; stipules minute, 

 subulate; leaflets sessile, narrowed at the base, 2-4 cm. long; racemes terminal, 

 rather dense, 5-12 cm. long; flowers purple, 7-10 mm. 4ong; pod silky-pubescent, 

 about 2.5 cm. long, mostly 3-5-seeded. Prairies, W. Neb. and S. Dak. to Mont., 

 N. Mex. and Ariz. July-Aug. 



4. Lupinus pusillus Pursh. Low LUPINE. (I. F. f. 2060.) Annual, villous- 

 pubescent, 1-2 dm. high, from a deep root, much branched near the base. Leaves 

 petioled, 2-5 cm. wide; leaflets 5-7 (commonly 5), narrowed at the base, glabrous 

 or nearly so above, pubescent with long scattered hairs beneath; racemes short - 

 peduncled or sessile, 3-8 cm. long, densely few-flowered; pedicels 2-5 cm. long; 

 flowers blue, 5-7 mm. long; pod oblong, very pubescent, 12-18 mm. long; style 

 subulate. Dry plains, Kans. to S. Dak., west to the Sierra Nevada, south to Ariz, 

 and N. Mex. March-July. 



7. ULEX L. 



Shrubs, with stiff spine-like branches, simple, linear stiff, very prickly leaves, 

 and large yellow solitary or racemed flowers. Calyx membranous, mostly yellow, 

 divided nearly to its base into 2 concave lips; upper lip mostly 2-toothed, and lower 

 3-toothed ; teeth short ; standard ovate ; wings and keel oblong, obtuse ; anthers 

 alternately longer and shorter, the shorter versatile ; ovary sessile, several-many - 

 ovuled ; style somewhat incurved, smooth ; pod ovoid, oblong or linear ; seeds 

 strophiolate. [The ancient Latin name.] About 20 species, natives of eastern 

 Europe. 



i. Ulex Europaeus L. FURZE. GORSE. WHIN. (I. F. f. 2061.) Much 

 branched, 3 dm. -2 m. high, more or less pubescent. Branchlets very leafy; 

 leaves 4-15 mm. long, the lowest sometimes lanceolate and foliaceous; flowers 

 solitary in the axils, 12-15 mm. long, the twigs appearing like racemes; pedicels 

 short, bracted at the base; calyx a little shorter than the petals, minutely 2-brac- 

 teolate; pod few-seeded, compressed, scarcely longer than the calyx. In waste 

 places, southern N. Y. to Va. Also on Vancouver Island. Fugitive from Europe. 

 May-July. 



8. GENISTA L. 



Low shrubs, mainly with i-foliolate leaves, and clustered yellow flowers. 

 Calyx 2-lipped; teeth long ; standard oval or ovate; wings oblong ; keel oblong, 

 deflexed, the claws of its petals adnate to the uncleft sheath of the stamens; anthers 

 alternately long and short ; ovary sessile, several-ovuled ; style incurved at the 

 apex ; pod various, flat in our species, several-seeded ; seeds not strophiolate. 

 [Celtic, gen, a small bush.] About 80 species, natives of Europe, N. Africa and 

 W. Asia. 



i. Genista tinctoria L. DYEWEED OR GREENWEED. WOAD- WAXEN. BASE 

 BROOM. (I. F. f. 2062.) Sterile shoots decumbent, the flowering ones erect, stiff, 

 3-6 dm. high, slightly pubescent. Leaves i-foliolate, sessile, lanceolate or elliptic- 

 lanceolate, 1-4 cm. long, glabrous or with scattered hairs, acute, narrowed at the 

 base, entire, shining; stipules none; racemes terminal, 3-5 cm. long, lew -flowered; 

 bracts ovate-lanceolate, acute; flowers yellow, nearly sessile, about I cm. long ; 

 calyx bracteolate at the base, its 3 lower teeth narrower than the 2 upper; pod 

 about 2.5 cm. long, glabrous. On dry hills, Me., Mass, and eastern N. Y. Nat- 

 uralized from Europe. Summer. 



9. CYT1SUS L. 



Shrubs, with 3-foliolate or i-foliolate leaves, and showy, clustered flowers, 

 mainly in terminal racemes. Calyx 2-lipped, the teeth short; standard ovate or 

 orbicular; wings oblong or obovate ; keel straight or curved ; anthers alternately 

 larger and smaller ; ovary sessile, many-ovuled ; style incurved ; pod flat, oblong 

 or linear, several-seeded; seeds strophiolate. [From Cythrus, one of the Cyclades. 

 About 45 species, natives of Europe, western Asia and northern Africa. 



I. Cytisus scoparius (L.) Link. BROOM. (I. F. f. 2063.) Stiff, wiry, 

 J-i-5 m. high, nearly glabrous. Branches elongated, straight, angled; lower 



