CASSIEAE subtrib. CASSIINAE Irwin & Barneby
Cassieae subtrib. Cassiinae Irwin & Barneby in Polhill & Raven, Advances in Legume Systematics 1: 104. 1981.—Genus typicum: Cassia L. emend. Gaertn.
Lvs paripinnate (2-foliolate) or (in Australia) sometimes phyllodal or (in S. America) 0; lfts opposite; inflorescence basically racemose, the anthotaxy spiral, the racemes sometimes paniculate or corymbosely clustered, rarely cauliflorous, or reduced to 1-2 fls; pedicels articulate only with the hypanthium, not below it; bracteoles 0-2; fls hermaphrodite; receptacle flat or shallowly concave, if deeper in-filled with solid tissue; sepals 5 imbricate; petals 5, the vexillar one almost always interior in bud; hypogynous disc 0; stamens (2-)4-10, when 10 either all fertile or 3 adaxial commonly staminodal, the anthers most commonly basifixed and dehiscent by (sub)terminal pores or short slits, in genus Cassia subversatile and some basally dehiscent; pod terete, variably angulate, or laterally compressed, (l-)2-many-seeded, the valves variable in texture, sometimes winged either along or between the sutures, either dehiscent or indehiscent, when dehiscent separating along the ventral or along both sutures, sometimes then elastically coiling; funicle either filiform or dilated, but not arilliform.