368 LXXV. LEGUMINOS^. 



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



Teibe I. ScLEEOLOBiBa;. — Leaves usually unequally pinnate. Sepals free, imbricate. Petals 

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

 lohhim, Fceppigia, Genostigma, &c. 



Teibe II. Eucjisalpinieji. — Leaves 2-piiinate. Sepals free. Petals usually 5, subequal. 

 Ovarj-'-stalk free in the bottom of the calyx-tube ; ovules 3-oo , rarely 1. Pellophomm, Mezo- 

 new-um, Gcesalpinia, Hoffmanseggia, Hmmatoviylmi, Fterolobium, Gleditschia, Poinciana, Parkin- 

 sonia. 



Teibe III. Cassie^!.— Leaves equally or unequally pinnate. Sepals 6, rarely 3-4, free, 

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

 the base of the calyx-tube. Seeds albuminous. Cassia, Labichea, Bialmm, Oeratonia, &c. 



Teibe IV. BAUHiNiEiE. — Leaves entire, 2-lobed or -foliolate. Calyx gamosepalous. An- 

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

 Cercls, &c. 



Teibe V. Amheestie^. — Leaves usually pinnate. Sepals free, rarely valvate. Anthers 

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

 Heterostemon, Humboldtia, Maerolobium, Afzelia, Tamarindus, Sohotia, Hymencea, Orudia. 



Teibe VI. CYNOMETEEiB. — Leaves equally pinnate, or 2-8-foliolate. Flowers small. Sepals 

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

 Gopaifera, Hardwickia, Gynometra. 



Teibe VII. DiMOEPHANDEEiE. — Leaves 1-2-pinnate. Flowers small, spicate. Calyx 5- 

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

 Eryihrophlmum. — Ed. J 



Stjb-oedek IV. PAPILIONAGEM, 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 {Orotalaria Vespertilio) ; sometimes opposite 

 when young {Phaseolus). Flowers perfect, very rarely polygamous (^racAis), inflor- 

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

 tion. Caltx more or less irregular, 6-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, soijjetimes 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 loat). 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.). Otakt solitary, opposite to the anterior sepal, sessile or pedicelled, usually 

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



