368 LXXV. LEGUMINOS^. 



[The Sub- order Ccesalpinieae is subdivided into seven tribes by Bentham : 



TKIBE I. SCLEROLOBIE.E. Leaves usually unequally pinnate. Sepals free, imbricate. Petals 

 usually 5, subequal. Ovary-stalk free in the bottom of the calyx-tube ; ovules 3-cc . Sclero- 

 lolium, Pcsppigia, Cenostigma, &c. 



TEIBK II. EUCJESALPINIE.E. Leaves 2-pinnate. Sepals, free. Petals usually 5, subequal. 

 Ovary-stalk free in the bottom of the calyx-tube ; ovules 3-oo , rarely 1. Pellophorum, Mezo- 

 neumm, Ccesalpinia, Hoffmanseggia, Hcematoxylon, Pterolobium, Gleditschia, Poinciana, Parkin- 

 sonia. 



TRIBE III. CASSIEJ:. Leaves equally or unequally pinnate. Sepals 5, rarely 3-4, free, 

 imbricate, rarely subvalvate. Petals 5-0. Anthers bursting by slits or pores. Ovary free in 

 the base of the calyx-tube. Seeds albuminous. Cassia, Labichea, Dialium, Ceratonia, &c. 



TRIBE IV. BAUHINIEJ:. Leaves entire, 2-lobed or -foliolate. Calyx gamosepalous. An- 

 thers versatile. Ovary-stalk free or adnate to the calyx-tube. Seeds albuminous. BauMnia, 

 Cercis, &c. 



TRIBE V. AMHERSTIE.E. Leaves usually pinnate. Sepals free, rarely valvate. Anthers 

 versatile. Ovary-stalk laterally adnate to the calyx-tube ; ovules 3-x . Brownea, Amherstia, 

 Jleterostemon, Huinboldtia, Macrolobiurn, Afzelia, Tamarindus, Schotia, Hymencea, Crudia. 



TRIBE VI. CYNOMETRE^:. Leaves equally pinnate, or 2-8-foliolate. Flowers small. Sepals 

 free, imbricate or valvate. Petals 5-0. Anthers versatile. Ovary 1-2-ovuled. Detarium, 

 Copaifera, Hardwickia, Cynometra. 



TRIBE VII. DIMORPHANDREA:. Leaves 1-2-pinnate. Flowers small, spicate. Calyx 5- 

 toothed or -lobed. Petals 5, imbricate. Anthers versatile. Ovules oo . Backia, Dimorphatulra, 

 Erythrophlceum . ED.] 



SUB-OEDER IV. PAPILIONACE&, Br. 



STEM woody or herbaceous. ROOTLETS often covered with small tuberous excres- 

 cences. LEAVES stipulate, with no petiolar glands, often terminating in tendrils, 

 sometimes 0, and replaced either by stipules (Lathyrus Aphaca) or by herbaceous and 

 membranous wings edging the stem (Crotalaria Vespertilio) ; sometimes opposite 

 when young (Phaseolus). FLOWERS perfect, very rarely polygamous (Arachis), inflor- 

 escence axillary, in a raceme, spike, head, or umbel, or solitary, imbricate in aestiva- 

 tion. CALYX more or less irregular, 5-toothed, -fid, or -partite, or 2-labiate, the two 

 posterior divisions forming the upper lip, the two lateral and the anterior forming the 

 lower lip. PETALS usually 5, alternate with the sepals, sometimes 4, 3, 2, or 1 

 (Amorpha), inserted on a disk lining the bottom of the calyx, usually free, or rarely 

 coherent (Trifolium), unequal, the posterior petal (standard) embracing the others, 

 the two lateral (wings) alike, pressed upon the two anterior, which also are alike, often 

 conniving, and simulating a single petal (keel or boat). STAMENS 10, or less by 

 abortion ; filaments either monadelphous, or diadelphous by the separation of the 

 stamen opposite to the standard ; or completely free (Sophora, Cladrastis, Anagyris, 

 &c.). OVAET solitary, opposite to the anterior sepal, sessile or pedicelled, usually 

 pluriovuled ; ovules situated along the suture facing the standard, cainpylotropous ; 



