FABACEAE. 169 



erect or spreading: wings and keel -petals with relatively short elaws. Ovary 

 sessile or nearly so. Pod turgid, elongate, or the subterranean ones, when 

 present, short. 



1. G. regularis (L.) B.S.P. Stems minutely retrorse-pubescent : leaflets 2-4.5 

 cm. long; blades elliptic-oblong or ovate-oblong: calyx 7-9 mm. long; lobes 

 obscurely scarious-margined : keel-petals 11-13 mm. long: pods 2.54.5 mm. 

 long. M. Rare, along the Conestoga Creek, near Lancaster. Limestones. 

 Sum. MILK-PEA. 



16. FALCATA Gmel. Slender vines. Leaflets 3. Racemes several-many- 

 flowered. Calyx 2-lipped, the upper lip broader than the lobes of the lower 

 lip which are shorter than the tube or slightly longer. Corolla not showy, blue, 

 violet, or white: blade of the standard obovate: wings and keel-petals with 

 elongate claws. Ovary long-stipitate. Pod rather flat, short. 



1. F. comosa (L.) Kuntze. Leaflets 3-8 cm. long; blades ovate to ovate- 

 lanceolate: calyx 6-8 mm. long; upper lip deltoid; lower lobes triangular- 

 subulate, less than as long as the tube : blades of the keel-petals much shorter 

 than the claws : pods 2.5-3 cm. long. Common, in thickets. Sum. HOG- 

 PEANUT. 



17. CUTOEIA L. Vines or diffuse plants, with long roots. Leaflets 3 or 

 several. Racemes or panicles 1-several-flowered. Calyx 2-lipped, the lobes of 

 the upper lip scarcely united, resembling the lateral lobes of the lower lip, 

 but often shorter. Corolla blue, purple, red, or white: standard erect, the 

 blade obovate: blades of the wings and the keel-petals long-clawed, those of 

 the former not aurieled, those of the latter curved. Style curved, pubescent. 

 Pod narrow, somewhat flattened. 



1. C. mariana L. Stems 3-12 dm. long: leaflets 2.5-6 cm. long; blades ovate- 

 lanceolate to narrowly ovate: calyx 22-25 mm. long; lobes of the upper lip 

 acuminate: standard 50-60 mm. long; blades of the keel-petals shorter than 

 the claws: pods 2.5-3 cm. long: seeds 4-5 mm. long. S. Islands and shores 

 of the Susquehanna. Schists. Sum. BUTTERFLY-PEA. 



18. GLYCENE L. Vines with tuberous rootstocks. Leaflets 5-9. Racemes 

 or panicles many-flowered, dense. Calyx 2-lipped: upper lip broad, often 

 2-lobed: lower lip 3-lobed. Corolla red, purple, or chocolate-colored: standard 

 reflexed, the blade often broader than long: blades of the wings and keel- 

 petals short-clawed, the former aurieled at the base, those of the latter spiral. 

 Style spiral, glabrous. Pod turgid. 



1. G. Apios L. Rootstocks bearing numerous fleshy oblong, oval, or globose 

 tubers 1-2 cm. thick: leaflets 5-7, or rarely 3; blades ovate to lanceolate, 

 3-10 cm. long: calyx 4-5 mm. long: standard 9-13 mm. long: pods 6-12 cm. 

 long. Common, in thickets and meadows. Sum. GROUNDNUT. 



19. PHASEOLUS [Tourn.] L. Vines or diffuse plants. Leaflets 2 or rarely 

 1. Racemes or panicles simple or branched. Calyx short and very broad, 2- 

 lipped, the upper lip entire or broadly 2-lobed, the lower lip 3-lobed. Corolla 

 variously colored: blades of the wings much smaller than that of the standard, 

 short-clawed; blades of the keel-petals not dilated at the base, short-clawed. 

 Style curved. Seeds with rounded ends. BEAN. 



1. P. polystachyus (L.) B.S.P. Leaflets 4-10 cm. long; blades ovate to orbic- 

 ular-ovate: upper calyx-lobes deltoid, acute: standard 11-12 mm. long: wings 



