LEGUMINOS^— ROSACEA 353 



V. Sinensis, Endl. Cow-pea. Black pea. Sto:k pea. Fig. 473. Long- 

 trailing or twining, tender annual: leaflets narrow-ovate; flowers white or 

 pale, 2 or 3 on the apex of a very long peduncle, the standard rounded; pod 

 slender and long, cj'lindrical: seed (really a beau raiher tbau pea; small, 

 short-oblong. China, Japan; much grown South for forage. 



14. LUPIN US. Lupine. 



Low herbs: leaves palmately compound, 5-15-folioliate, rarely simple: 

 flowers showy, in terminal spikes or racemes: calyx decidedly 2 -lipped: 

 standard round, sides rolled backward: keel incurved, sickle-like: wings 

 lightly united above keel: stamens inonadelphous, with 3 alternate an- 

 thers, dift'erent in size and shape from others: pod oblong, flattened, often 

 knotty. 



L. per^nnis, Linn. Perennial, somewhat downy: stem erect to 1 or IK 

 ft.: leaflets 7-11, large, radiating, nearly sessile, oblanceolate, mucronate: 

 stipules small: flowers blue or whitish, in loose racemes: pod linear-oblong, 

 hairy, 5-6-seeded. Sandy soil. May to June. 



1.'). CASSSIA. Senna. Fig. 223. 



Ours herbs with odd-pinnate, compound leaves and yellow flowers: sepals 

 5, nearly equal: coi-oUa not paplionaceous, nearly regular: petals 5: stamens 

 5-10, some anthers usually imperfect: pod often curved, many-seeded. 



U. Marilindica, Linn. Smooth perennial, 3-4 ft. : leaflets 6-9 pairs, lance- 

 olate-oblong, mucronate, with a gland at or near base of petiole: stipules 

 deciduous: stamens 10, 3 imperfect, with deformed anthers, the anthers 

 black: flowers showy yellow, short, axillary racemes. Summer. 



16. APIOS. Groundnut, 



Perennial, twining herb, with edible underground tubers: leaves pin- 

 nately 3-7-foliate: flowers in short, dense, often branching axillary racemes: 

 calyx rather 2-lipped: standard broad and reflexed : keel strongly incurved, 

 pushing into the standard, and finally coiled or twisted. 



A, tuberdsa, Moench. Flowers brownish purple, sweet-scented, in dense 

 racemes about 1-3 in. long: no tendrils: juice milky. Summer. In low, 

 moist ground and shady woods. 



XXIX. ROSACE.E. Rose Family 



Herbs, shrubs and trees, much like the Saxifragaccas: leaves 

 alternate, mostly with stipules (which are often deciduous): flowers 

 mostly perfect and polypetalous, the stamens usually perigynous, 

 mostly numerous (more than 20) : pistils 1 to many: fruit an akene, 

 follicle, berry, drupe, or accessory. A very mixed or polymorphous 

 family, largely of temperate regions, of about 75 genera and 1,200 

 species. By some writers, divided into three or four families. Common 



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