FABACEAE 651 



keel-petals obtuse, slightly incurved, slightly shorter than the wings to which they co- 

 here. Stamens diadelphous (9 and 1). Anthers alike. Ovary nearly sessile or stalked. 

 Style filiform, incurved, glabrous. Ovules several. Pod narrow, curved, 2-valved. 

 HOG-PEANUT. 



Foliage glabrate or sparingly pubescent : bracts usually shorter than the pedicels : pods 



pubescent on the margins. 1. F. comosa. 



Foliage copiously pubescent : bracts usually longer than the pedicels : pods pubescent 



all over. 2. F. Pitcheri. 



Falcata comosa ( L. ) Kuntze. Foliage glabrate or sparingly villous. Stems twining, 

 1-3 m. long, branching, often matted : leaflets 3, the blades ovate to ovate-lanceolate, 3-8 

 cm. long, acute or apiculate, deep green above, broadly cuneate to subcordate at the base : 

 racemes or panicles shorter than the subtending leaves : pedicels 3-5 mm. long, usually longer 

 than the bracts : calyx 8-10 mm. long, pubescent : corolla white or purplish, 10-14 mm. 

 long ; standard with an oblong-obovate cordate blade : pods linear-oblong, 2.5-3 cm. long, 

 rather abruptly beaked. [Amphicarpaea monoica Ell.] 



In damp thickets, New Brunswick to Minnesota, Nebraska, Florida and Louisiana. Summer and 

 fall. 



Falcata Pitcheri ( T. & G. ) Kuntze. Foliage hirsute with brownish hairs. Stems 

 climbing, several m. long, branching : leaflets 3, the blades ovate, often rhomboidal, 3-8 

 cm. long, acute or short acuminate, ciliate, broadly cuneate or subcordate at the base, rela- 

 tively firm : racemes or panicles shorter than the leaves : bracts usually longer than the 

 pedicels : calyx minutely pubescent, about 1 cm. long : corolla purple, 12-15 mm. long ; 

 standard with a fiddle-shaped but not cordate blade : pods linear-oblong, 3-3.5 cm. long, 

 rather gradually acuminate. 



In thickets, western New York to Nebraska, Tennessee and Texas. Summer. 



47. BRADBURYA Raf. 



Perennial herbs, with prostrate or high-climbing stems. Leaves alternate : blades 

 mostly pinnately 3-foliolate or 5-7-foliolate : stipules persistent : leaflets with blades 

 broadest below the middle. Flowers perfect, showy, solitary on axillary peduncles or 

 several together. Calyx sessile : lobes nearly equal, or the 2 upper lobes united. 

 Corolla white, pink, blue or violet : standard spreading ; blade sometimes broader than 

 high : wings curved : keel-petals incurved, little shorter than the wings. Stamens dia- 

 delphous (9 and 1), or partially monadelphous. Anthers alike. Ovary nearly sessile. Style 

 incurved, somewhat pubescent about the dilated apex. Pod elongated, narrow, 2-valved, 

 slightly flattened. [Centrosema Benth.] BUTTERFLY PEA. 



Upper calyx-lobe shorter than the tube : bracts acute : leaflets with cordate or subcordate blades. 



1. B. arenitola. 

 Upper calyx-lobe twice as long as the tube : bracts slender-acuminate : leaflets with 



cuneate or rounded blades. 2. B. Virginiana* 



1. Bradburya arenicola Small. Plant, at least the young foliage, finely pubescent. 

 Stems twining over bushes for fully 1 or 2 m., more or less branched : leaflets 3, the blades 

 ovate or oblong-ovate, 2-5.5 cm. long, retuse, blunt or sometimes minutely apiculate, thick- 

 ish, slightly lustrous above, dull and sparingly reticulated beneath, cordate or subcordate 

 at the base : bracts ovate, acute, less than 1 cm. long : calyx minutely pubescent and 

 ribbed ; lobes relatively short, the upper one shorter than the tube, the lateral ones slightly 

 longer : corolla purplish blue, similar to that of B. Virginiana. 



In pine lands, near Eustis, Florida. Summer. 



2. Bradburya Virginiana (L. ) Kuntze. Plant glabrous or puberulent. Stems twin- 

 ing, 5-12 dm. long : leaflets 3, the blades thin but firm, ovate to oblong, linear or oblong- 

 obovate, 2-7 cm. long, acute, or mucronate, ciliate, rounded or subcordate at the base, 

 prominently reticulated : bracts ovate-lanceolate, 1 cm. long, or nearly so, slender-acu- 

 minate, prominently ribbed lengthwise : calyx ribbed like the bracts ; lobes lanceolate- 

 subulate, much longer than the tube, rough-pubescent, the upper one fully twice as long as 

 the tube : corolla lilac ; standard with a suborbicular blade, 4.5-5.5 cm. broad : pods 

 linear, 10-13 mm. long, slender-acuminate at the apex, thick-margined. 



In sandy soil, New Jersey to Florida, Arkansas and Texas. Also in tropical America. Spring to 



48. CLITORIA L. 



Perennial herbs or shrubby plants, with erect, or slightly twining stems. Leaves 

 alternate : blades pinnately 3-foliolate, or many-foliolate : stipules persistent : leaflets with 



