620 FABACEAE 
1. Xylophacos Missouriénsis (Nutt.) Rydb. Plant silky-strigillose with silvery 
hairs. Stems mostly tufted, often 1-10 cm. long: leaves approximate, mostly 5-15 cm. 
long ; stipules ovate-lanceolate, acute ; leaflets 7-21, the blades elliptic, oval to obovate, 
6-10 mm. long, acute or obtuse and mucronate: racemes few-flowered, 1-7 cm. long: 
peduncles 5-20 cm. long: pedicels 2-3 mm. long: calyx mostly 9-10 mm. long; lobes 
about 4 as long as the tube: corolla violet-purple, 2 cm. long or slightly shorter: pods 
about 2.5 em. long, acuminate, transversely wrinkled, dehiscent, slightly keeled along the 
ventral suture. [Astragalus Missouriensis Nutt. ] 
On prairies and plains, Northwest Territcry to Nebraska, Texas and New Mexico. Spring and 
summer, 
27. DALBERGIA L. f. 
Shrubs, with upright or climbing branched stems. Leaves alternate: blades 1-folio- 
late or rarely unequally pinnate : leaflets often leathery. Flowers perfect, in small racemes 
or panicles, or cyme-like axillary clusters. Calyx pedicelled : lobes disposed in 2 lips, the 
2 upper relatively broad, the 3 lower relatively narrow. Corolla white: standard with a 
broad blade: wings about as broad as the slightly incurved keel-petals. Stamens 8-10, 
monadelphous or diadelphous. Anthers erect: sacs opening by cracks at the apex. Ovary 
stalked. Style almost straight. Ovules 2 or sometimes solitary. Pod flat, suborbicular, 
indehiscent. Seed solitary. 
1. Dalbergia Brównei (Pers.) Kuntze. A shrub 1-5 m. tall, with long wide-spread- 
ing branches. Leaves 1-foliolate, attenuate ; leaflets leathery, the blades 5-15 cm. long, 
ovate, oblong or elliptic, short-acuminate, minutely pubescent beneath, rounded or trun- 
cate at the base ; petiolule as long as the petiole or shorter: panicles 1-2 cm. long, in the 
axils: pedicels 1-3 mm. long: calyx campanulate, 1.5-2 mm. long ; lobes shorter than the 
tube: corolla white or pink, 7-9 mm. long: pods suborbicular, 2-3 cm. in diameter, 1- 
seeded, reticulated. 
On river banks and shores, southern Florida and tropical America. 
28. ICHTHYOMENTHIA P. Br. 
Tropical trees, with a reddish brown scaly bark and stout branches. Leaves alternate 
without stipules: blades unequally pinnate: leaflets opposite, leathery, thickened at the 
margins, on slightly swollen petiolules. Flowers perfect, in large axillary th yrsoid panicles 
arising from the branches of the previous year. Calyx pedicelled : tube campanulate, per- 
sistent : lobes 5. Corolla white tinged with red, standard with a suborbicular, emarginate 
blade, canescent on the outer surface, with a green blotch on the inner; claw almost as 
long as the calyx : wings oblong-spatulate, auricled on the upper side: keel-petals broadly 
faleate; claws connate. Stamens 10: filaments diadelphous (9 and 1) : anthers versatile- 
uniform in size. Ovary linear, sessile, silky. Style subulate, incurved. Stigma capitate. 
Ovules numerous, pendulous, amphitropous. Pod linear, flattened, on a stalk which ex- 
ceeds the calyx-tube, more or less constricted between the seeds, indehiscent, furnished 
with 4 broad wings, 2 to each suture. Seeds flattened, with a dull crustaceous testa. 
2. Ichthyomenthia piscípula (L.) A. S. Hitchcock. An irregularly branched tree, 
sometimes 17 m. tall, with pubescent young foliage. Leaves pinnate, 1-3 dm. long; pe 
lets 7-9, the blades oblong varying to oval, obovate or rarely ovate, 2-10 cm. long, 9?" 
ruptly acute or acuminate, undulate or shallowly toothed ; petiolules 4-7 mm. long : 
panicles 1-1.5 dm. long, short-peduncled : pedicels 5-10 mm. long: calyx campanulate ; 
tube silky ; lobes broadly triangular, shorter than the tube: corolla white : petals mostly 
striped with red ; standard with a suborbicular notched blade : pods elongated, 5-10 cm. 
long, broadly 4-winged, the wings undulate or incised. [Piscidia Erythrina L.] 
e near the coast, southern Florida and the Keys. Also in the West Indies and in nor- 
29. PSORALEA L. 
Herbs or shrubs, with fibrous or much enlarged woody roots and dark or pellucid, 
glandular foliage. Leaves alternate : blades 3-5-foliolate : leaflets with entire or Te 
blades. Flowers perfect, in axillary, usually peduncled spikes or racemes. Calyx-lo 
nearly equal or the lower longer. Corolla of various colors, often variegated : standa ; 
broad, narrowed into a claw, the blades sometimes auricled : wings slightly scythe-shaped ` 
keel often shorter than the other petals, incurved. Stamens diadelphous or monade 
