FABACEAE 603 
8. Crotalaria pumila Ortega. Perennial, minutely pubescent or glabrate. Stems 
several together, often branched throughout, 1-9 dm. long, decumbent: leaves numerous : 
leaflets 3, the blades cuneate to oblong-cuneate, 0.5-1.5 cm. long, mostly emarginate, the 
terminal one longer than the petiole: calyx becoming 4 or 5 mm. long : corolla yellowish ; 
standard less than 10 mm. long: pods 1-1.5 em. long. 
In sand, peninsular Florida and the Keys. Also in tropical America. 
6. LUPINUS L. 
Annual or perennial herbs or shrubby plants, with erect or prostrate stems. Leaves 
alternate, with stipules at the base of the petioles: blades 1-foliolate, or usually digitately 
5-15-foliolate or rarely 3-foliolate. Flowers perfect, in terminal racemes. Calyx 2- 
lipped, the upper lip of 2 partially united sepals, the lower lip of 3 partially or wholly 
united sepals. Corolla of various colors: standard broad with recurved margins: wings 
more or less curved: keel scythe-shaped. Stamens monadelphous. Anthers alternately 
small and versatile. Style curved. Ovules 2-many. Pod flattened, 2-valved. LUPINE. 
Leaf-blades palmately several-foliolate. 
Leaflets 7-11 : plants perennial. l. L. perennis. 
Leaflets 5: plants annual or biennial. g 
Leaflets with cuneate, truncate blades: corollas 1 em. long or shorter. 2. L. subcarnosus. 
Leaflets oblanceolate, elliptic or obovate-oblanceolate blades, not truncate : 
corolla 1 em. long or longer. 3. L. Texensis. 
Leaf-blades 1-foliolate. 
Biennial: corolla mainly blue. 4. L. diffusus. 
Perennial: corolla mainly red. 5. L. villosus. 
1. Lupinus perénnis L. Perennial, more or less pubescent. Stems solitary or several 
together, ascending or erect, 2-6 dm. long, simple or sparingly branched : leaves spread- 
ing; petioles usually longer than the blades; leaflets 7-11, the blades oblanceolate to 
elliptic, 1.5-5 cm. long, obtuse or mucronate: raceme 0.5-3 dm. long: calyx 6-8 mm. 
long: corolla blue or rarely white to pink ; standard with a blade 12-15 mm. broad : pods 
narrowly oblong, 3-3.5 em. long, pubescent, beaked. 
In sandy soil, Maine to Minnesota, Florida, Louisiana and Missouri. Spring. 
2. Lupinus subcarndsus Hook. Annual or biennial, somewhat villous. Stems 
branched at the base, the branches ascending or decumbent, 1-3 dm. long, mostly simple : 
leaves rather numerous; petioles mostly longer than the blades, pubescent like the 
branches ; leaflets 5, the blades cuneate, 2-4 cm. long, truncate, mucronulate: racemes 
often overtopping the leaves, 4-8 em. long: pedicels 2-6 mm. long: calyx 5-6 mm. long, 
densely silky-villous : corolla purplish blue, 1 cm. long or shorter. 
On prairies, Texas. Spring. 
3. Lupinus Texénsis Hook. Annual or biennial, silky-strigillose. Stems branched 
at the base or near it, the branches a-cending or decumbent, 1-3 dm. long, sometimes 
sparingly branched: leaves rather numerous; petioles mostly longer than the blades; 
leaflets often 5, the blades elliptic to oblanceolate or obovate-oblanceolate, 1.5-4 cm. long, 
acute or acutish, sometimes merely apiculate or obtuse : racemes 5-15 cm. long, often rather 
many-flowered: pedicels 4-10 mm. long: calyx 7-8 mm. long, silky strigose: corolla 
urplish, 1 em. long or slightly longer ; standard with a pale blotch in the center: pods 
near, 3-4 cm. long. 
In prairies or insand, Texas. Spring. 
b 4. Lupinus diffüsus Nutt. Perennial, densely silky. Stems several or many from the 
we 1-6 dm. long, erect or prostrate: leaves l-foliolate ; blade oblanceolate, oblong or 
i, vate, 4-10 cm. long, mucronate, longer than the petiole or shorter : racemes 0.5-3 dm. 
ong: pus about 1-5 mm. long: calyx 8-12 mm. long: corolla blue ; standard with 
à purple blotch in center : pods oblong, 3-4 cm. long, woolly. : 
In dry pine lands, North Carolina to Florida. Spring. 
th 5. Lupinus villdsus Willd. Biennial, densely villous. Stems solitary or several from 
E base, 3-6 dm. long, ascending or prostrate: leaves l-foliolate ; blade lanceolate to 
a anceolate, 4-15 em. long, usually acute and apiculate, longer than the petioles or 
tart na racemes 1-4 dm. long: pedicels about 2-5 mm. long: calyx 8-12 mm. long: 
densely hs standard with a purple blotch in center: pods oblong, 2-4 cm. long, 
In dry pine lands, South Carolina to Florida. Spring. 
