- Leaves simple, with yellow flowers. - Keel oblong, straight................Genista. 25

- Keel falcate, acuminate..........Crotalaria. 26

- Leaves palmately 5 to 15-foliate (rarely simple). (Genus 32, or)...........Lupinus. 27

- Leaves palmately 3-foliate. - Tree with yellow flowers..................Laburnum. 28

- Herbs with straight, small pods............Trifolium. 29

- Herbs with curved or spiral pods...........Medicago. 30

- Lvs. pinnately 3-fol.-Pod few-seeded. Fls. (scarlet, Gen. 49) wh. or yel. MELILOTUS. 31

- Pod 1-seeded. - Fls. yellow. - Lvs. resinous-dotted......(Gen. 47)

- Fls. cyanic. - Lvs. dark-dotted.....Psoralea. 32

- Lvs. not dotted........(in Gen. 24)

- Lvs. pinnate, with no odd leaflet, 15 to 25 pairs. - Pod 1 - 2-seeded......Glotidium. 33

- Pod ∞-seeded.........Sesbania. 34

- Lvs. odd-pinnate, - dotted with dark glands. - Shrub. Fls. spicate........Amorpiia. 35

" - Herb 10-androus..............Dalea. 36

" - Herb 5-androus.......Petalostemon. 37

- dotless. - Legume 2-celled lengthwise, turgid......Astragalus. 33

- Legume half 2-celled lengthwise...............Phaca. 89

- Leg. 1-celled. - Herbs. Style hairy outside. Tephrosia. 40

- Herbs. Style glabrous.....Indigofera. 41

- Shrubs or trees. Cyanic.....Robinia. 42

- Trees with fls. yellow........Colutea. 43 g. 5. Phaseoleae,.

- Lvs. pinnate, 5 to 15-foliate. - Vine shrubby. Keel falcate................Wistaria. 44

- Herbs. Keel (straight, Gen. 49) spiral.........Apios. 45

- Lvs. pinnately 3 (rarely l)-foliate. - Fls. yellow. Legumes 5-seeded.........Vigna. 46

- Fls. yellow. Legumes 1 to 2-seeded. Rhyncosia. 47 - Fls. cyanic. (*)

* Keel with stamens and style spirally twisted.......................Phaseolus. 48

* Keel straightlsh. - Fls. scarlet. Erect herbs or trees.................Erythrina. 49

- Fls. purplish. - Calyx ebracteolate............Ampiiicarpaea. 50

- 4-toothed......Dolichos. 52

- 5-cleft, long Clitoria. 53

- 5-cleft, short CENTROSEMA. 54

1. MIMOSA, L. Sensitive Plant. (Gr.14 Loteae 502 a buffoon; the leaves seem sporting with the hand that touches them.) Flowers 14 Loteae 503

14 Loteae 504 Calyx valvate, 5-toothed; corolla 0, or 5-toothed, stamens 4 to 15; legume separated into 1-seeded joints; 14 Loteae 505 like the perfect, but without ovaries or fruit.- 14 Loteae 506 Herbs and shrubs, natives of tropical America, etc. 1 M. strigilldsa Torr & Gr. Nearly unarmed, prostrate, diffuse, strigous; stip. ovate; petioles and peduncles very long; lvs. bipiunate, pinnae 4 to 6 pairs; lfts. 10 to lb pairs, oblong-linear; heads oblong; leg. broad, 1 to 3-jointed. - Banks of the Miss. (Hale) to E. Fla. Sts. several feet in length, reddish and in appearance smooth. Lfts. 3 to 4" by 1", crowded. Fed. and lvs. 6 to 8' long. Hds. rose-color, with innumerable spreading stamens. Pods crowded, very hispid. Jl., Aug. 2 M. pudica L. St. prickly, more or less hispid; lvs. digitate-pinnate, pinnae 4 of many (20 or mare) pairs of linear lfts. - Native of Brazil. St. shrubby, about a foot high. Lfts. about 3" long, very numerous. Fls. small, capitate. It is occasionally cultivated for the curiosity of its spontaneous motions; - the leaves bending, folding, and apparently shrinking away from the touch of the hand.

2. SCHRAN'KIA, Willd. Sensitive Brier. (In honor of Francis de Paula Schrank, a German botanist.) Flowers14 Loteae 507 ; calyx minute, 5-toothed; petals united into a funnel-shaped, 5-cleft corolla; stamens 8 to 10, distinct or monadelphous; legume long and narrow, echinate, dry, 1-celled, 4-valved, many-seeded.- 14 Loteae 508 Prickly herbs. St. procumbent. Lvs. sensitive, bipinnate. Fls. in spherical heads, purplish.

S. uncinata Willd. St. angled, grooved; pinnae 6 to 8 pairs; lfts. numerous, minute, elliptic-oblong or linear; hds. axillary, 1 to 2 together, on peduncles shorter than the lvs.; leg. long and slender, very prickly. - Dry soils, Clark Co., Mo. (Mead), and Southern States. St. 2 to 4f long, and with the petioles and peduncles armed with short, sharp prickles turned downwards. Lfts. about 2" by 1/2". Ped. 2 to 3' long, hds. 1/4 to 1/2' diam. Pods 2 to 4' long. May - Jl. (S. an-gustata T. & G.)

3. VACHEL'LIA, W. and Arn. Sponge Tree. Stamens very nu-merous, distinct; legume cylindrical, turgid, scarcely dehiscent; seeds in a double row, imbedded in pulp. Otherwise as in Acacia. - Tree armed with straight, stipular spines. Lvs. bipinnate, with a gland. Fls. in globular heads, yellow.

V. Farnesiana W. & Arn. Pinnae 4 to 8 pairs; lfts. 15 to 20 pairs, veiny, oblong, crowded; ped. 2 or 3 together. - Grows about N. Orleans (Hale) and along the Gulf to St. Marks, Fla. Lfts. about 2" long. Pods 2 to 3" long, blackish when ripe. Said to yield gum.

4. DESMAN'THUS, Willd. (Gr.14 Loteae 509 a bundle, 14 Loteae 510 flower.) Flowers 14 Loteae 511 or 14 Loteae 512 ; calyx valvate, campanulate, 5-toothed; petals 5, distinct; stamens 5 or 10, distinct; legume dry, flat, 2-valved, 4 to 6-seeded, smooth. - Herbs with bipinnate lvs. and white fls. in axillary, pedunculate heads. Stip. setaceous. Petioles with one or more glands.

D. brachylobus Benth. Erect, smoothish; pinna; 6 to 13 pairs, lfts. minute, 20 to 30 pairs; fls. all perfect, pentandrous; pods short (1' long), oblong, somewhat curved, 2 to 4-seeded. and crowded.-14 Loteae 513 Along the Miss. from Ill. to La. Sts. striate, 1 to 3f high. Jn. - Aug. (Darlingtonia brachyloba and glandulosa DC.)