(always?) May, Jl.
β. gracilior. Nearly glabrous, slender; lfts. few, oblong (9" by 3".) Plant 3 to 9' long. Pod small (15" long.) Fls. reddish purple as above. - Covington, La. (Hale.)
4i. INDIGO'FERA, L. Indigo-plant. (Lat. Indigo, fero, to bear.) Calyx with 5 acute segments; vexillum roundish, emarginate; keel spurred each side, at length reflexed; legume 2-valved, 1 to co-seeded. - Herbs or shrubs. Stip. small, distinct from the petiole. Fls. cyanic.
1 I. Caroliniana Walt. Herb erect, branched; lvs. unequally pinnate; lfts. 11 to 15, oblong-ovate, petiolulate; rac. slender, longer than the lvs.; leg. pendulous, oblong, rugose, veiny, 2-seeded. - Sandy woods, N. Car. (Dr. Porcher) to Fla. St. 3 to 7f high. Lfts. 9 to 12" long, obtuse or retuse. Rac. 3 to 6' long; fls. pedicellate, yellowish-brown. Calyx pubescent, small, with 5 short, subulate teeth. Jl., Sept.
2 I. leptosepala Nutt. Herbs decumbent, strigous, with ashy hairs; lvs. unequally pinnate, lfts. 1 to 9, obovate-oblong, subsessile, nearly glabrous above; rac. longer than the lvs., fls. nearly sessile; leg. linear, reflexed, 6 to 9-seeded.- Ga. to Ark. St. 2 to 3f long. Fls. pale scarlet. Pods 1 1/2' long, pointed.
42. ROBIN'IA, L. Locust. (In memory of John Robin, herbalist to Louis XIV.) Calyx short, campanulate, 5-cleft, the 2 upper segments more or less coherent; vexillum large; alae obtuse; stamens diadelphous (9 & 1); style bearded inside; legume compressed, elongated, many-seeded. - Trees and shrubs with stipular spines. Lvs, unequally pinnate. Fls. showy, in axillary rac.
1 R. Pseudacacia L. Common Locust. Branches armed with stipular prickles; lfts. ovate and oblong-ovate; rac. pendulous, smooth, as well as the legumes. - Native in Penn. and the more Southern and Western States, and abundantly naturalized in N. Eng. Hight 30 to 80f, with a diam. of 1 to 3 or 4f. The pinnate lvs. have a beautiful symmetry of form, each composed of 8 to 12 pairs of lfts., with one at the end. These are oval, thin, nearly sessile, and very smooth, closing as if in sleep by night. Fls. in numerous, pendulous clusters, diffusing an agreeable fragrance. Pod narrow, flat, with 5 or 6 small, brown seeds. When young the tree is armed with thorns, which disappear in its maturity. Apr., May. - The wood is very hard and durable.
2 R. viscosa Vent. Clammy Locust. Stipular spines very short; branchlets, petioles, and leg. glandular-viscid; lfts. ovate; rac. crowded, erect. - This beautiful tree is native of the Mts. of N. Car. to Ga., where it attains the hight of 40f. The fls. numerous, rose-colored, in erect, axillary clusters, with the thick, dark green foliage, render this tree one of the most brilliant ornaments of the park or the garden. Apr., Jn.
3 R. hispida L. Rose Acacia. Stipular spines almost wanting, shrub mostly hispid; rac. loose, suberect. - A beautiful shrub, native of the Southern States, much cultivated in gardens for the sake of its numerous, large, deep rose-colored and very showy fls. Hight 3 to 5 or 8f. Lfts. 5 or 6 pairs, broadly oval. Fls. inodorous, twice larger than those of the common locust.
43. COLU'TEA, L. Bladder Senna. Calyx 5-toothed; vexillum with 2 callosities, expanded, larger than the obtuse carina; stigma lateral, under the hooked summit of the style, which is longitudinally bearded on the back side; legume inflated, scarious. Shrubs with unequally pinnate lvs.
C. arborescens L. Lfts. elliptical, retuse: vex. shortly gibbous behind. - A hardy, free-flowering shrub, native of Italy, etc, growing almost alone on the summits of Mt. Vesuvius. Sts. 8 to 12f high. Lfts. about 9. Fls. large, yellow, with a broadly expanded banner. In medicine the leaves are used instead of senna. Jn. - Aug. †
44. WISTA'RIA, Nutt. (In memory of Caspar Wistar, M.J)., President of Am. Phil. Soc.) Calyx bilabiate, upper lip emarginate, the lower one 3 subequal teeth; vexillum with 2 callosities ascending the claw and separating above; wings and keel falcate, the former adhering at top; legume torulous; seeds many, reniform. - Twining, shrubby plants, with pinnate lvs. Rac. large, with large, colored bracts. Fls. lilac-colored.
1 W. frutescens DC. Sts. pubescent when young, at length glabrous; lfts. 9 to 13, ovate or elliptic-lanceolate, acute, subpubeseent; wings with 2 auricles at base; ova. glabrous. - An ornamental, vigorous vine, in rich alluvion, S. & W. States. Sts. several yards long, climbing over bushes, etc. Lfts. 1 to 2' by 1/2 to 1'. Fls. nearly as large as those of the sweet pea, numerous, in rac. 3 to 6 or 8' long, sheathed in very conspicuous bracts. Sds. spotted. Apr., May. † (Glycine frutescens L. Thyosanthus Ell.)
2 W. consequana Benth. Lfts. 9 to 13, ovate-lanceolate, silky-pubescent; rac. terminal, nodding, loosely many-flowered. - A splendid flowering vine from China. St. of rapid growth, 12f or more in length. Fls. in long, pendulous clusters. May, Jn. †
45. A'PI0S, L. Ground Nut. (' the pear; from the form of its tubers.) Calyx campanulate, obscurely bilabiate, the upper lip of 2 very short, rounded teeth, the 2 lateral teeth nearly obsolete, the lower one acute and elongated; keel falcate, pushing back the broad, plicate vexillum at top; ovary sheathed at base. - Twining, smooth. Root bearing edible tubers. Lvs. pinnately 5 to 7-foliate.
A. tuberosa Ph. St. twining; lvs. pinnate, of 7 ovate-lanceolate lfts.; rac. shorter than the lvs. - Thickets and shady woods, Can. and U. S., twining about other plants. St. round, 2 to 4f in length. Lvs. rather numerous, each consisting of 3 (rarely 2) pairs of leaflets and an odd terminal one. These are ovate, narrow, more or less pointed, smooth, on short pedicels. Rac. axillary, solitary, 1 to 3' long, crowded. Fls. dark purple. To the root are appended oval, fleshy tubers, which are very nutritious, and would perhaps be cultivated had wo not the potato. Jl., Aug. (Glycine Apios L.)