OC LKlilMI.NOS.E. (I'L'LSK FAMILY.) 



SiiK^tDKU III. MIMOSI'LE. Corolla rofjiilar, hypo^^v nous, valv.ite in 

 till' liml. Staint'iis (li.stiiict or uiiiti'd, often very numerous, in.seried with 

 the j>etals. Kinbryo straijjht. — Leaves jiinnale, or 2- 3-i)innate. Flowers 

 polygamous. 



• Flowers perfect, and staminate. Petals mostly uuit«d. 



■<- Herbs. Leaves sensitive. 



48. MIMOSA. Legume broad, tlat, jointed. Stamens 4 - .j. 



49. SCHRANKL\. Legume linear, angular, joiiitless. Stamens 8 -10. 



■>- -1- Trees or shrubs. 



50. PITHECOLOBIUM. Legume coiled or twisted. Leaflets 4, large. 



51. ACAC1.4.. Legume straiglit or bent. Leaflets numerous, small. 



* « Flowers perfect and neutral. Petals distinct. 



52. DESMANTHUS. Sterile filaments filiform or petal-like. Stamens 5 or 10. 



Suborder I. PAPILIONACE^S:. Pulse Family. 



1. CROTALARIA, L. Kattle-box. 



Calyx .^-parted. Vexillum cordate : keel falcate. Stamens monadelphous. 

 Anthers alternately oblong and roundish. Legume inflated, oblong, many- 

 seeded. — Chiefly herbs, with simple or compound leaves; the stipules often 

 broad, decurreut, inversely sagittate. Racemes mostly opposite the leaves. 

 Flowers yellow. Legumes dark purple. 



* Leaves simple. 



1. C. sagittalis, L. Annual; .stems low, branching, villous or hairy; 

 leaves nearly ses.sile, oval or oblong, hairy; racemes short, 2-3-flowered. — 

 Barren sandy soil. June -July. — Stem 3'-6' high. Kacemes 2'-3' long. 



2. C. OValis, Pursh. Perennial ; stems several, branching, prostrate or 

 ascending, rough with appressed hairs ; leaves short-petioled, oval or oblong, 

 hairy; racemes long, 3-6-flowered. — Dry pine barrens. May -July. — 

 Stem 6' -12' high. Racemes 4' -6' long. Flowers distant. 



3. C. Purshii, DC. Perennial ; stems slender, erect, roughened with 

 scattered appressed hairs ; leaves thick, smooth above, the lower ones oblong, 

 the upper linear; racemes long, .5- 10-flowered. — Flat grassy pine barrens in 

 the lower districts. May-June. — Stem 12'- 18' high. Racemes 6'-12' 

 long. Flowers distant. 



4. C. retusa, L. Annual ; stem erect ; leaves cuneate-oblong, retuse, 

 glal)rous above, silky-pube.scent beneath, pellucid-dotted ; stipules minute or 

 none ; racemes terminal, many-flowered ; legumes oblong, glabrous. — South 

 Florida. — Stem 1° - 2° high. Flowers large. 



5. C. maritima, Chapm. Perennial?, silky-pubescent; stem decumbent, 

 excessively branched ; leaves exstipulate, varying from oblong to linear, nearly 

 sessile, more or less succulent ; racemes very numerous, opposite the leaves, 

 2-4-flowered; sepals lanceolate, as long as the small petals; legume oblong, 

 glabrous. — Coast and Keys of South Florida. May. 



