Part 46 (2/2)

Leaves simple.

[*][*] Flowers not at all papilionaceous, perfect. Calyx 5-parted.

Herbs.

41. Ca.s.sia. Leaves simply and abruptly pinnate, not glandular-punctate.

42. Hoffmanseggia. Leaves bipinnate, glandular-punctate.

[*][*][*] Flowers not at all papilionaceous, polygamous or dicious.

Trees.

43. Gymnocladus. Leaves all doubly pinnate. Calyx-tube elongated, at its summit bearing 5 petals resembling the calyx lobes. Stamens 10.

44. Gleditschia. Th.o.r.n.y; leaves simply and doubly pinnate. Calyx tube short; its lobes, petals, and the stamens 3--5.

SUBORDER III. Mimoseae. (MIMOSA FAMILY.) Flower regular, small. Corolla valvate in aestivation, often united into a 4--5-lobed cup, hypogynous, as are the (often very numerous) exserted stamens. Embryo straight.

Leaves twice pinnate.

45. Desmanthus. Petals distinct. Stamens 5 or 10. Pod smooth.

46. Schrankia. Petals united below into a cup. Stamens 8 or 10. Pod covered with small p.r.i.c.kles or rough projections.

1. BAPTiSIA, Vent. FALSE INDIGO.

Calyx 4--5-toothed. Standard not longer than the wings, its sides reflexed; keel-petals nearly separate, and, like the wings, straight.

Stamens 10, distinct. Pod stalked in the persistent calyx, roundish or oblong, inflated, pointed, many seeded.--Perennial herbs, with palmately 3-foliolate (rarely simple) leaves, which generally blacken in drying, and racemed flowers. (Named from apt???, _to dye_, from the economical use of some species, which yield a poor indigo.)

[*] _Racemes many, short and loose, terminal, often leafy at base, flowers yellow._

1. B. tinctria, R. Br. (WILD INDIGO.) Smooth and slender (2--3 high), rather glaucous; leaves almost sessile, leaflets rounded wedge-obovate (--1' long), stipules and bracts minute and deciduous, pods oval-globose, on a stalk longer than the calyx.--Sandy dry soil, N. Eng.

to Fla., west to Minn. and La.

[*][*] _Racemes fewer, opposite the leaves._

[+] _Flowers yellow._

2. B. villsa, Ell. Sometimes soft-hairy, usually minutely p.u.b.escent when young, erect (2--3 high) with divergent branches; leaves almost sessile, leaflets wedge-lanceolate or obovate, lower stipules lanceolate and persistent, on the branchlets often small and subulate, racemes many-flowered; pedicels short; bracts subulate, mostly deciduous; pods ovoid-oblong and taper-pointed, minutely p.u.b.escent.--Va. to N. C. and Ark.

[+][+] _Flowers white or cream-color._

3. B. leucophae'a, Nutt. _Hairy, low_ (1 high), with _divergent branches_; _leaves almost sessile_, leaflets narrowly oblong-obovate or spatulate; _stipules and bracts large and leafy, persistent; racemes long_ (often 1), _reclined; flowers on elongated pedicels, cream-color_; pods pointed at both ends, h.o.a.ry.--Mich. to Minn., south to Tex. April, May.

4. B. leucantha, Torr. & Gray. _Smooth_; stems, leaves, and racemes as in n. 6; _stipules early deciduous; flowers white; pods oval-oblong, raised on a stalk fully twice the length of the calyx_.--Alluvial soil, Ont. and Ohio to Minn., south to Fla. and La.

5. B. alba, R. Br. _Smooth_ (1--3 high), _the branches slender and widely spreading; petioles slender; stipules and bracts minute_ and deciduous; leaflets oblong or oblanceolate; racemes slender on a long naked peduncle; _pods linear-oblong_ (1--1' long), _short-stalked_.--Dry soil, S. Ind. and Mo., to La., N. C., and Fla.

July.

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