324 Obdeb 47.— rosacea. 



Inm, with 2 or 4 callosities near the base of the limb ; stigma terminalj 



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



with pinnately trifoliate Ivs. 



D. multifldrus Torr. & 6r. Lfls. 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 long, 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. 

 IS. Halil St. minutely pubescent; Ivs. glabrous; petioles 3 times longer 

 than the few (5 to 8)-flowered Ac. — Near N. Orleans (Hale.) 

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



D. Cat-iang W., 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, 6-toothed, seg- 

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

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

 linear oblong, torulous, several-seeded. — V 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 ; lfts. 3, oblong- 

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

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

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

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



54. CENTROSE'MA, DC. (Gr. Kevrpov, a spur, OTJim, 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. — if Twining. 

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

 striated. 



C, Virginiana Benth. St. very slender ; lfts. pblong-ovate to oblong-Hnear, 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 feet in length. 

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



Ordbk XLVII. EOSACE^. Roseworts. 



Eerbs, shruha or irees with alternate, stipulate lvs. and regular flowers. jSfepofa 5, 

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

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

 distinct, inserted with the petals (perigynous). Ovaries 1, 2, 5 or 00, 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. (lUustr. in figs. 33, 41, 

 65, 66, 79, 91, 100, 106, 179, 166, 167, 159, 293, 307, 385, 289, 380, 381, 414, 439, 

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



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

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



Properties. — A nlghly Important order, whether we regard its delidous fruit, its mcdfclnw 

 prodncts, or the beauty of its Uowere. None of Its species (excepting those of the almond trlDy 

 are unwholesome. An astringent principle characterizes the family, ireslding chiefly in the barlt 

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

 of the GiUenia, o» an emetic; Agrlmonia, as a vermifuge. The petals of Eosa daimucena yield 

 the well known fragrant oil called attar qfroee. The mmond, peach. Sec, abound in ptusslc acid. 



