632 FABACEAE 
lets mostly 3, the blades strongly involute, thus almost linear-subulate, 5-11 mm. long, 
acute: spikes globular or oval, 1.2-1.6 cm. long, fully or nearly as thick: calyx 4 mm. 
long, minutely and closely appressed-pubescent with somewhat lustrous hairs, surpassing 
the bract : corolla pink-purple. 
In dry soil, central Texas. Spring and summer. 
21. Petalostemon decümbens Nutt. Plant thinly pubescent above or glabrate. 
Stems solitary or several together, ascending or decumbent, 3-6 dm. long, mostly simple : 
leaflets 5-7, the blades linear or linear-oblong, 8-18 mm. long, acute or mucronulate, gland- 
ular, more or less involute: spikes ovoid or oblong, 1-2 cm. long: bracts ovate-lanceolate, 
with subulate tips: calyx strigillose, shorter than the bract; tube campanulate ; lobes 
lanceolate or ovate-lanceolate, shorter than the tube, acute: corolla pink or rose-purple ; 
standard with an oblong-ovate cordate blade, the other petals with oblong blades. 
In dry soil, northeastern Texas. Summer. 
22. Petalostemon cárneus Michx. Plant glabrous or nearly so. Stems solitary or 
several together, erect, 5-10 dm. tall, more or less branched, the branches erect or ascend- 
ing: leaflets 5-7, the blades linear, linear-elliptic or linear-oblanceolate, 5-10 mm. long, 
acute or acuminate, more or less involute : spikes subglobose or oblong, becoming cylindric, 
1-4 em. long: bracts lanceolate with subulate tips: calyx shorter than the bract; tube 
campanulate ; lobes triangular, acute, shorter than the tube : corolla deep pink ; standard 
abruptly contracted or truncate at the base, the other petals with elliptic-oblong blades. 
In sand, Georgia and Florida. Spring and summer. 
23. Petalostemon Feayi Chapm. Plant glabrous. Stems usually many together, 
2-5 dm. long, erect or decumbent, branched, especially above: leaflets mostly 3-5, the 
blades linear, 8-18 mm. long, involute-filiform, obtuse or truncate, apparently acute, gland- 
ular: spikes subglobose, 1-1.5 cm. long: bracts inconspicuous or early deciduous: calyx 
shorter than the bract ; tube campanulate, glabrous ; lobes ovate, acute, ciliate, about } as 
long as the tube : corolla lavender or deep pink; standard with the broad blade usually 
truncate at the base. ; 
In dry sand, peninsular Florida. Spring and summer. 
34. KUHNISTERA Lam. 
Perennial herbs, with long tough roots and more or less glandular foliage. Leaves 
alternate: blades unequally pinnately compound ; leaflets with narrow blades. Flowers 
perfect, in involucrate corymbose spikes resembling heads of Carduaceae. Calyx pubes- 
cent: lobes bristle-like, nearly equal, longer than the tube. Corolla white : standard 
broad, abruptly narrowed into a claw or cordate : wings and keel-petals similar, their claws 
adnate to the staminal tube. Stamens 5, monadelphous. Ovary sessile. Style subulate. 
Ovules 2 in each cavity. Pod membraneous, included in the calyx, indehiscent. Seed 
solitary. 
1. Kuhnistera pinnàta (Walt.) Kuntze. Plant glandular. Stems 3-11 dm. tall, 
usually branched at the base, corymbose above : leaflets 3-15, the blades linear-filiform to 
linear-cuneate, 5-10 cm. long, obtuse: spikes subglobose, about 1 mm. thick, subtended 
by an imbricated involucre: lower bracts imbricated, suborbicular in outline, acute, cil- 
iate: calyx villous; tube campannlate ; lobes filiform-setaceous, much longer than bs; 
tube, plumose and conspicuous: corolla white ; standard with a relatively narrow blade, 
but truncate or subcordate at the base. [ Petalostemon corymbosum Michx. P. corymbosus VaT. 
trifoliatus Chapm.?] 
In dry sandy pine lands, North Carolina tb Florida and Mississippi. Summer and fall. 
35. AESCHYNOMENE L. 
Herbs or shrubs, with erect or prostrate stems. Leaves alternate: blades — 
unequally pinnate: leaflets numerous. Flowers perfect, in axillary racemes or om 
clusters, racemes or panicles. Calyx pedicelled : lobes nearly equal, the 2 upper and t g 
3 lower more or less united into two lips. Corolla usually yellow, sometimes variegat 
with other colors: standard broad, with a short claw: wings oblique, keel-petals “r , 
Stamens diadelphous (5 and 5). Anthersalike. Ovarystalked. Style glabrous, insure 
Ovules few or numerous. Pod flattened, separating into as many indehiscent sections 8$ 
there are joints. JOINT VETCH. 
: > riscidula. 
Annual; plant upright: pods with 6-10 half-orbicular joints. " = Virginica. 
Perennial: plant prostrate: pods with 2-3 nearly square joints. ears 
