324 ORDER 47. ROSACE^E. 



lum, with 2 or 4 callosities near the base of the limb ; stigma terminal^ 



legume compressed, with few oval, compressed seeds. Twining herbs 



with pinnately trifoliate Ivs. 



D. nmltiflorus Torr. & Gr. Lfts. large, round-ovate, with a short acumination ; 

 rac. about as long as the petioles, dense, many-flowered ; upper segm. of the cal. 

 entire, lower longest, lanceolate ; leg. broad, 3 to 5-seeded. River banks, Ga. to 

 La. and Ark. Sts. very Jong, retrorsely pubescent. Lfts. 2 to 4' diam., smooth 

 when old. Pods 2' long, 8" wide, with an abrupt, incurved beak. Sds. brown, 

 much flattened. Jn., Jl. 



(3. HALII. St. minutely pubescent; Ivs. glabrous; petioles 3 times longer 



than the few (5 to 8)-flowered rac. iNear N. Orleans (Hale.) 

 D. sesquipedalis W. a vine with very long pods, native of the W. Indies, and 



D. Cat-iang \V., with two erect pods at top of the peduncle, native of E. Indies, 



are occasionally seen in cultivation at the South (Feay). 



53. CLITO^RIA, L. Calyx bibracteolate, tubular, 5-toothed, seg- 

 ments acuminate ; vexillum large, spreading, roundish, emarginate, not 

 spurred j keel smaller than the wings, acute, on long claws 5 legume 

 linear oblong, torulous, several-seeded. H Mostly twining. Lvs. pin- 

 nately 3 to 5-foliate. Fls. very large, solitary or several together. 



C. Mariana L. Glabrous ; st. suberect or twining, suffruticous ; Ifts. 3, oblong- 

 ovate or lanceolate, obtuse, lateral ones petiolulato ; ped. short, 1 to 3-flowered ; 

 bracteoles and bracts very short ; leg. torulous, 3 to 4-seeded. Dry soils, N. J. 

 to Flu. St. 1 to 3f long, round, slender, branched. Lfts. rather remote, about 

 1' by 6". Cor. pale purple, 2 to 2' in length, calyx ' , bracteoles 2". JL, Aug. 



54. CENTROSE'MA, DC. (Gr. nevrpov, a spur, or\\ia,, a standard ; 

 the vexillum spurred.) Sepals lance-linear, slightly united, the lower 

 longest, and with 2 broad bracteoles ; vex. very large, with a short 

 spur on the back near the base ; keel and stamens much shorter, in- 

 curved; legume long, linear, margined and long pointed. ^ Twining. 

 Lvs. pinnately 3-foliate. Fls. very large. Bracts, bractlets, and calyx 

 striated. 



C. Virginiana Benth. St. very slender; Ifts. oblong-ovate to oblong-linear, firm, 

 very veiny, the veins incurved ; ped. 1 to 4-flowered bracteoles larger (not 

 longer) than the cal. ; pod. veined along the margin. Dry soils, S. States. 

 Whole plant of firm texture, glabrous and very slender, several ieet in length. 

 Banner orbicular, If broad, violet blue. Pod 4 to 6' long, 2 to 3" wide. Jl., Aug. 



ORDER XLVII. ROSACE^E. ROSEWORTS. 



Herbs, shrubs or trees with alternate, stipulate Ivs. and regular flowera Sepals 5, 

 rarely fewer, united, often reenforced by as many bractlets. Petals 5, rarely 0, dis- 

 tinct, inserted on the disk which lines the calyx tube. Stamens OO, rarely few, 

 distinct, inserted with the petals (perigynous). Ovaries 1, 2, 5 or oo, distinct; or 

 often coherent with each other, or immersed in an excavated receptacle ( 444). 

 Fruit a drupe, or achenia, or a dry or juicy etasrio ( 565), or pome. Seeds 1 or few 

 in each carpel, anatropous, exalbuminous ; embryo straight. (Illustr. in figs. 33, 41, 

 65, 66, 79, 91, 100, 106, 179, 166, 167, 159, 293, 307, 3S5, 289, 380, 381, 414, 439, 

 440, 441, 443, 452, 461, 462.) 



This order, as here constituted, includes five suborders, and together 87 genera and 1000 spe- 

 cies. A large proportion of these are natives of temperate climates north of the equator. 



Properties. A highly important order, whether we regard its delicious fruit, its medicinal 

 products, or the beauty of its flowers. None of its species (excepting those of the almond tribe) 

 are unwholesome. An astringent principle characterizes the family, residing chiefly in the bark 

 and the roots. The roots of the blackberry have been used in medicine as an astringent ; those 

 of the Gillenia, as an emetic; Asrimonia, as a vermifuge. The petals of Eosa darnascena yield 

 the well known fragrant oil called attar of rose. The almond, peach, &c., abound in prussic acid, 



