OBDEE 46. LEGUMINOS^E. 303 



trifoliate. The upper fls. complete, but usually barren, the lower apet- 

 alous and fruitful. 



1 A. monoica Nutt. St. retrorsely pubescent; Ifts. ovate, thin; cauline rac. 

 simple, pendulous ; cal. segm. very short, triangular-acuminate ; bracts minute. 

 A very slender vine in woods arid thickets, Can. and U. S. St. twining, rough 

 backwards, 4 to 8f in length. Lfts. very thin, 1 to 3' long, J as wide, lateral 

 ones oblique at base. Rac. axillary, few-flowered. Fls. pale purple. Caulino 

 leg. smoothish, with 3 to 4 dark purple seeds. Radical leg. often subterraneous, 

 with one large, compressed, brown seed. Jl, Sept. 



2 A. Pitcher! Torr & Gr. St. villous, with ferruginous, spreading hairs ; Ifts. 

 rhombic-ovato ; rac. erect, often branched; cal. segm. lance-subulate, a third of tho 

 length of the tube ; bracts broad, conspicuous. Alluvion about N. Orleans and 

 W. La. (Hale). Lfts. rather thick, 2 to 3' by H to 2', hirsute both sides. Fls. 

 a little smaller (G" long) ; fr. a little larger (16 to 18" long) than in No. 1. Sds. 

 3, compressed, purplish-black. 



51. GALACTIA, L. (Gr. yaAa, milk ; some species have a milky 

 juice.) Calyx bibracteolate, 4-clcft, the segments of nearly equal 

 length, upper one broadest, entire ; pet. oblong ; vexillum broadest and 

 incumbent; keel petals slightly cohering at top ; legume many-seeded. 

 Herbs prostrate or twining, sometimes shrubby. Lvs. pinnately 

 compound. Rac. axillary. Fls. cyanic. 



| Leaves pinnate, 7 to 9-foliatc. Stems prostrate, twining No. 1 



Loaves pinnately 3-foliate. Steins prostrate, twining Nos. 2-4 



Leaves pinnately 3-foliatc. Stems erect or ascending Nos. 5, C 



1 G. Elliottii Nutt. Lfts. 7 to 9, coriaceous, elliptic-oblong, obtuse at eacli 

 end ; ped. longer than tho Ivs., few-flowered at tho top ; upper sep. (double) 

 broad, ovate, subulate-mucronate. Ga. (Feay and Pond). Sts. running or climb- 

 ing many feet. Lfts. 1' or more long, minutely pubescent beneath. Pods vil- 

 lous, 2' long, 4 to G-seeded. Corolla white or rose color, 7" long. May Jl. 



2 G. glabella MX. Si. nearly glabrous; Ifts. 3, elliptic-oblong 1 , emnrginate at 

 each end, sub- coriaceous, shining above, a little hairy beneath ; rac. pedunculate, 

 about the length of the Ivs., fls. pedicellate. In arid soils, N. J. to Fla, Sts. 2 to 

 4f long. Lfts. 10 to 20" by 5 to 10", varying in form from elliptic through ob- 

 long to ovate. Fls. rather largo (7 to 8" long), reddish-purple, greenish exter- 

 nally. Pods \\' long (immature), erect, falcate. Aug. Sept. 



3 G. mollis MX. St. softly pubescent; Ifts. oval, obtuse, nearly smooth above. 

 softly villous and whitish beneath ; rac. longer than the Ivs., pedunculate, fascicu- 

 late ; fls. on very short pedicels ; leg. villous. Dry soils, Md. to Ga. St. several 

 feet long. Lfts. about 1' long, 8" wide. Fls. about half as largo as in tho last. 

 Aug. Sept. 



4 G. pilpsa Nutt. St. retrorsely hirsute; Ifts. 3, oval-oblong, retuso at apex, 

 finely hirsute on both surfaces, paler beneath ; rac. twice or thrice Imger than the 

 Ivs., with scattered, distant fls. N. Car. to Fla. aid La. Sts. several feet in 

 length. Lfts. 1 to 2' long, half as wide, petioles 1 to 1?}' long. Fls. a fourth 

 smaller than in No. 2, pale roseate, pedicellate. Pods villous. Jn. Sept. 



5 G. brachypoda Torr. & Gr. St. flexuous, somewhat erect; Ifts. 3, oblong or 

 linear-oblong, odd one 2ietiolulate, petioles longer than the Ifts. or the fe \v-flowered, 

 stalked rac. Pino barrens, "W. Fla. Sts. leaning, 2 or more f high. Lfts. 12 to 

 18" by 4 to 6". Fls. purplish, about half as large as in No. 2. 



6 G. sessiliflora Torr. & Gr. St. flexuous, erect ; Ifts. oblong-linear or linear, 

 odd one subsessile ; petioles longer than the Ifts. ; rac. very short, sessile. Ala. and 

 W. Fla. Sts. two or more together, 1 to 2f high. Lfts. 12 to 20" by 3 to 7", 

 obtuse or emarginate. Fascicles 3 to G-flowered. Fls. purple. Pods erect, 6 to 



52. DOl/ICHOS, L. (Gr. cfo^of, long ; from the great length ot 

 .these vines.) Calyx 4-lobcd, the upper lobe 2-toothed or entire, vexii- 



