226 Leguminaceae 
teeth short. Petals obtuse; standard ovate; wings and keel oblong. Stamens 10, mona- 
delphous. Ovary sessile; ovules several to many; style glabrous. Pod ovoid to linear, 
flat and scarcely longer than the calyx in ours. (The Latin name.) W. 
U. europaeus L. 
CYTISUS BROOM 
Shrubs; branches green, angular. Leaves 1—3-foliolate; stipules small. Flowers 
solitary or in racemes, yellow (ours) or white. Calyx-tube campanulate; calyx-limb 2- 
lipped. Petals wide, clawed, free except the keel; keel obtuse. Stamens 10, mona- 
delphous. Ovules many; style glabrous. Pod flat. Seeds several. (From Cythrus, 
one of the Cyclades, where this or a related plant was first found.) W. 
C, scoparius L. (Scotch Broom) 
LUPINUS LUPINE 
Herbs, rarely shrubby at base. Leaves palmately 5—16-foliolate, rarely |-foliolate 
(not ours) ; stipules small. Flowers in terminal racemes or spikes, mostly showy. Calyx 
deeply 2-lipped, often 2-bracted; upper lip 2-cleft or -toothed or rarely entire; lower lip 
entire or 3-toothed. Wings united at the summit; keel falcate, acuminate. Stamens mon- 
adelphous; alternate filaments longer. Stigma bearded. Pod coriaceous, somewhat ob- 
long, somewhat flattish, often torulose or with cross partitions. (L. lupus=a wolf; it 
was supposed to devour that which made the soil fertile. ) 
A. Ovary 1—2-ovuled; pod 1—2-seeded, ovate; annual. PLATYCARPOS (p. 226) 
AA. Ovary 3—15-ovuled; pod mostly more than 2-seeded, usually longer than ovate for 
its width; annual or perennial. EULUPINUS (p. 226) 
Subgenus PLAT YCARPOS—Cotyledons persisting, wide and clasping. 
A. Flowers in whorls on the axis of the raceme. 
B. Hairs short, appressed, silky; petals yellow. U. 
. L. luteolus Kell. 
BB. Hairs long, spreading, villous; petals purple or white or cream-colored. E. 
L. microcarpus Sims. 
AA. Flowers scattered on the axis of the raceme. 
C. Leaflets mostly 5, 1.8—3 cm. long, acute or obtuse at apex. E. 
L. pusillus Pursh 
CC. Leaflets mostly 7, 1—1.5 cm. long, rounded at apex: 
L. brevicaulis Wats. 
Subgenus EULUPINUS—Cotyledons not persisting, petioled. 
A. Annual. Group | (p. 226) | 
AA. Perennial. ° 
B. Upper surface of the leaflets glabrous or somewhat hairy but green, not silvery. 
hairy. Group 2 (p. 227) 
BB. Upper surface of the leaflets silvery-hairy. 
C. Plants less than 3 dm. high. Group 3 (p. 228) 
CC. Plants more than 3 dm. high. Group 4 (p. 229) 
GROUP | 
A. Plant 3—6 dm. high; bracts mostly exceeding the calyx; lower lip of the calyx ena 
tire. W. L. carnosulus Gr. 
AA. Plant 2.5 dm. or less high; bracts shorter than the calyx. 

