140 NORTH AMERICAN FLORA [Volume 24 



Leaflets 9-13, obnvatc or oblanceolate; pods flattened, fully 3 mm. 



broad, somewhat reticulate. 45. /. caroliniana. 



Leaflets 3-9. 4h. /. tumidula. 



Pods usually I -seeded. 



Pods globose or rounded-ovoid; lateral leaflets oblong or oblong ob 

 lanceolate. 

 Leaflets equally grayish-strigose on both sides. 47. /. jalisccnsis. 



Leaflets green and glabrous above. 4s / sphaerocarpa. 



Pods oblong, truncate at both ends; leaflets obovalc 49. /. sphinclosperma. 



XII. Platycarpab 

 Leaflets green, not silvery-canescent ; valves of the pod not at all keeled. 50. /. plalycarpa. 

 Leaflets silvery-canescent; valves of the pod slightly keeled. 37. /. Nclsonii. 



I Hirsutae. Annual or biennial herbs, villous-hirsute with brown hairs. Leaflets 5-11, 

 loosely pubescent on both sides. Calyx-lobes subulate, several times as long as the tube, the 

 lowest one the longest, long-villous. Banner orbicular-obovate; wings narrowly oblanceolate; 

 keel-petals obliquely oblanceolate, rounded at the apex; lateral spurs acute. Pod linear, 

 straight, densely villous with dark-brown hairs. Seeds bluntly prismatic. 



1 Indigofera hirsuta L Sp. PI. 751. 17.S.V 



Indigofera ferruginca Solium. & Thonn. Guin. PI. 370. 1S27. 

 Indigofera fusca G. Don, Gen. Hist. 2: 211. 1832. 

 Anila hirsuta Kuntze. Rev. Gen. 160. 1891. 



An annual or biennial; stem 5-12 dm. high, brown, villous-hirsute with browh hairs; stip- 

 ules subulate-setaceous, 5-10 mm. long, villous; leaves 1-1.5 dm. long, the rachis and petiole 

 villous: leaflets 5-11, membranous, loosely pubescent on both sides, gray-green beneath, 

 obovate, 2-3.5 cm. long; spikes longer than the leaves, rather densely many-flowered; bracts 

 subulate-setaceous; pod with rather strong sutures, about 2 cm. long, 2 mm. wide, 6-8-seeded; 

 seeds 1.5 mm. long, 1 mm. wide, slightly pitted. 



Type locality: India. 



Distribution; St. Vincent; also in Guiana and Brazil; naturalized from the tropics of the Old 

 World. 



Illustrations: Jacq. Ic. PI. Rar. pi. 569; Hook. Comp Hot. Mag. pi. 14, Rheede, Hort Mai. 

 9: pi. 30; Beauv. Fl. Oware pi. 119; Lam. Tab. Kncyc pi. 026, f. 3. 



II. Viscosae. Herbs, somewhat woody at the base, glandular-hirsute. Leaflets 7-13, 

 strigose, glaucescent beneath. Calyx-teeth subulate, twice as long as the tube. Banner 

 broadly obovate; wings obliquely oblanceolate, with a small basal auricle; keel-petals obliquely 

 cuneate; lateral spurs sac-like, obtuse. Pod linear, straight, glandular-hirsute. Seeds rounded- 

 prismatic. 



2 Indigofera viscosa Lam Encyc 3: 247. 1789. 



Indigofera inquinans Willd. Sp. PI. 3. 1236. 1803. 



Stem 3-10 dm. high, erect or spreading, in age somewhat woody at the base, densely 

 glandular-hirsute as well as strigose; stipules subulate-setaceous, 2-3 mm. long; leaves 2-5 

 cm. long, the petiole and rachis glandular-hirsute and strigose; leaflets 7-13, membranous, 

 elliptic or the terminal one obovate, 5-8 mm. long, pale-green above, with somewhat curved 

 hairs less than 0.5 mm. long, glaucescent bene*th, strigose with straight hairs nearly 1 mm. 

 long; spikes about equaling the leaves, 3- 1 2-flowered ; calyx about 2 mm. long, strigose; 

 corolla about 4 mm. long, bright-red; pod terete, 1.5-2.5 cm. long, 1.5 mm. thick, 8-12- 

 seeded, faintly tomentose; seeds about 1 mm. long, truncate at the ends. 



Type locality: Described from cultivated specimens. 



Distribution: Hispaniola; also in the East Indies, Malay islands, northern Australia, and 

 tropical Africa. 



Illustrations: Pluk. Phyt. pi. 166, /. 3 (?); Wight, Ic. PI. Ind. pi. 404. 



III. Parviflorae. Annuals, with strigose stems. Leaflets linear or narrowly oblanceolate, 

 strigose. Banner obovate, sessile; wings broadly obliquely oblanceolate, rounded at the apex, 

 with a rather large acute basal auricle; keel-petals with a lanceolate blade ending in a long 

 beak; lateral spurs represented by a shallow pouch. Pod linear, subterete, strigose. Seeds 

 subcubic, with rounded angles. 



