FABACEAE. 161 



Tribe VII. PHASEOLEAE. 



Keel neither curved nor coiled. 



Standard distinctly clawed : style glabrous or sparingly 

 pubescent below. 

 Keel-petals short-clawed : calyx subtended by two 



bractlets. 15. Galactia. 



Keel-petals long-clawed : calyx without bractlets. 16. Falcata. 



Standard not distinctly clawed : style bearded along the 



inner side. 17. Clitoria. 



Keel coiled or curved. 

 Keel spirally twisted. 



Leaves without stipels : leaflets 5 or more : wings with 



very short claws. 18. Glycene. 



Leaves with stipels : leaflets 3 : wings with rather 



long claws. 19. Phaseoi.us. 



Keel incurved. 20. Strophostyles. 



Tribe VIII. VICIEAE. 

 Style terete, with a tuft of hairs at the apex. 21. Vicia. 



Style flattened, pubescent along the inner side. 22. Lathyrds. 



1. BAPTISIA Vent. Perennial herbs with rootstocks. Stipules not de- 

 current on the stem. Leaf-blades mostly digitately 3-foliolate, the leaflets 

 broadest above the middle. Calyx somewhat 2 -lipped. Corolla white, cream- 

 colored, yellow, or blue. Style usually longer than the short ovary. Pods 

 long-stipitate. — False-indigo. 



1. B. tinctoria (L.) E. Br. Leaflets 1-3 cm. long; blades obovate to spatu- 

 late-euneate: calyx becoming 4-5 mm. long; lower lobes deltoid, all acute: 

 corolla yellow; wings 12-15 mm. long: pod-body 4-5 mm. thick. — Common, 

 in dry soil. — Sum. — Wild-indigo. 



2. CROTALARIA [Dill.] L. Annual or perennial, sometimes partially 

 woody herbs. Stii^ules often decurrent on the stem. Leaf-blades 3-foliolate, 

 or 1-foliolate in our species. Calyx with a prominently 2-lobed upper lip and 

 a deeply 3-lobed lower lip. Corolla yellow or blue : standard with a pair of 

 callosities near the base of the blade: wings with the scarcely auricled blades 

 broadened upward: blades of the keel-petala broad, scythe-shaped. Pods 

 globular to cylindric. 



1. C. sagittalis L. Stems 1-5 dm. tall, conspicuously pubescent: blades of the 

 leaflets oblong to lanceolate or linear-lanceolate: calyx loosely-pubescent: 

 corolla yellow, about as long as the calyx: pods oblong, 2.5-4 cm. long. — 

 Bather common, on sandy banks. — Schists. — Sum. — Eattle-box. 



3. LUPINUS [Tourn.] L. Annual, biennial, or perennial herbs, or woody 

 plants. Stipules not decurrent. Leaf-blades several-many-foliolate or rarely 

 1-foliolate. Calyx with a lobed upper lip and an entire or slightly 3-lobed 

 lower lip. Corolla variously colored or white: standard without callosities: 

 wings with blunt auricles: keel-petals scythe-shaped. Pods oblong to linear. 



1. L. perennis L. Plants 2-6 dm. tall, the stipules early deciduous: leaflets 

 7-11; blades oblanceolate to elliptic, obtuse or mucronulate: lower lip of the 

 calyx with the middle lobe acute and projecting beyond the others: corolla 

 blue or purplish-blue: pods mostly 7-8 mm. wide, long-pedicelled. — N. S. 

 Rather rare, on dry open hillsides. — Sandstones and shales, schists. — Spr. — 

 Lupine. 



4. CYTISUS [Tourn.] L. Shrubs with much-branched stems, sometimes 

 broom-like. Leaf -blades 3-foliolate or 1-foliolate: blades of the leaflets nar- 

 row or broad, mostly entire, or obsolete. Calyx with an obscurely lobed upper 



Lancaster County Flora 11. 



