608 FABACEAE 
axillary, 1-flowered, bracted at the top: calyx usually sparingly pubescent ; tube turbinate- 
campanulate ; lobes narrowly linear, hardly twice as long as the tube: corolla pink, 6-7 
mm. long ; standard very faintly if at all veined: pods linear, 2-3 mm. long, straight, 
acute. 
In dry soil and open pine woods, North Carolina. Summer. 
11. INDIGOFERA L. 
Perennial herbs or shrubs, with erect or prostrate stems. Foliage often more or less 
densely clothed with simple 2-horned or forking hairs. Leaves alternate: blades un- 
equally pinnate, or sometimes 3-foliolate or rarely 1-foliolate: leaflets with entire blades, 
Flowers perfect, in axillary spikes or racemes. Calyx-lobes oblique, nearly equal or the 
upper shorter. Corolla often pink or purple: standard broad}; blade sessile or clawed, 
persistent : wings somewhat elongated, slightly cohering with the more or less inflated 
erect keel and deciduous like it. Stamens 10, usually monadelphous, or one partially dis- 
tinct. Anthers alike. Ovary sessile or nearly so. Style glabrous. Ovules numerous or 
rarely few or solitary. Pod linear to subglobose, angled or turgid. Seeds subglobose or 
flattened, separated from each other. INDIGO-PLANT. 
Racemes surpassing the subtending leaf-like bracts. 
Pods about 1 cm. long or shorter, oblong. 
Pods 1.5-3 em. long, linear. 
Pods curved. 
Pods straight. 
Standard 8-10 mm. long: racemes many-flowered : campestrian species. 3. J. leptosepala. 
1. I. Caroliniana, 
2 
3 
Standard 5-6 mm. long: racemes few-flowered : Floridian species. 4. I. miniata. 
5 
6 
. I. subulata. 
Racemes shorter than the subtending leaf-like bracts. 
Pods straight or nearly so, over 2 em. long. 
Pods strongly curved, less than 2 cm. long. : EOM 
Leaflets copiously pubescent above. . I. Lindheimeriana, 
Leaflets glabrous above or nearly so. 7. I. Anil. 
1. Indigofera Caroliniàna Walt. Foliage minutely strigillose. Stems erect, 1-2 m. 
tall, widely branched: leaflets 9-15, the blades oblong, oval or oblanceolate, thinnish, 
1-2.5 cm. long, mucronate, slender-stalked : racemes surpassing the leaf-like bracts: calyx 
densely strigillose ; lobes triangular, acute, shorter than the tube : corolla yellowish brown ; 
standard 5-6 mm. long, surpassed by the other petals: pods oblong, 5-10 mm. long, acute 
at each end, drooping on short reflexed pedicels. 
In dry pine lands, North Carolina to Florida.’ Spring and summer. 
2. Indigofera subulata Vahl. Foliage sparingly strigillose. Stems branched at the 
base, the branches spreading or decumbent, 2-6 dm. long, more or less branched : leaflets 
3-5, the blades oval or oblong to obovate, 0.5-1.5 cm. long, mucronulate, short-stalked : 
racemes surpassing the leaf-like bracts : calyx pubescent ; lobes subulate, much longer than 
the tube: corolla pale, often pinkish ; standard 4-5 mm. long: pods linear, 3-4 cm. long, 
acute, slightly curved. 
In sand, Florida Keys. Throughout the year. 
3. Indigofera leptosépala Nutt. Foliage strigillose. Stems more or less branched 
at the base, the branches decumbent, 3-10 dm. long, simple or branching : leaflets 7-9, the 
blades oblong-obovate to cuneate, 1-2 cm. long, mucronate, sessile or nearly so: ae 
surpassing the leaf-like bracts: pedicels stout, 1-1.5 mm. long, finally recurved : ir Jo 
strigillose ; lobes subulate, much longer than the tube : corolla pale scarlet ; standard 
mm. long : pods linear, 3-3.5 cm. long, not torulose, straight. 
In dry soil, Kansas to Georgia and Florida, Texas and Mexico. Spring to fall. 
4. Indigofera miniàta Ortega. Foliage densely strigillose with whitish bains Ree 
quently pale. Stems more or less freely branched at the base, the branches sprea 041 
procumbent : leaflets firm, 5-9, the blades linear-oblong to narrowly oblanceolate, hn 
cm. long, acute, short-stalked : racemes surpassing the leaf-like bracts: calyx q ^i Ta 
pubescent ; lobes lanceolate-subulate, longer than the tube: corolla pinkish or re : he 
standard 5-6 mm. long: pods oblong-linear, 1.5-2 cm. long, acute, not torulose, straigt, 
In sand, southern peninsular Florida and the Keys. Throughout the year. "uade 
5. Indigofera tinctória L. Foliage strigillose. Stems erect, 1-2 m. tall, pore 
ing: leaflets 7-11, the blades oblong, oval or obovate, 1-2.5 cm. long, — po 
racemes shorter than the leaf-like bracts : pedicels 1-1.5 cm. long, finally edes herir 
pubescent ; lobes subulate, the lower ones surpassing the tube in length: coro " ind 
eise ; standard, 4-5 mm. long: pods linear, 2.5-3 em. long, straight or slightly c , 
torulose. 
r. 
In waste places, North Carolina to Florida and Louisiana. Introduced from Asia. Summe 
. I. tinctoria. 
