60 NATURAL HISTORY OF PLANTS. 
tacle a little wider, lined by a 10-crenate glandular disk. Legume 
linear compressed or subcylindrical thick, more or less divided 
within between seeds by septa continuous with endocarp ; mesocarp 
fleshy subpulpy indehiscent? Seeds transverse.—Small unarmed 
trees; leaves 2-pinnate; leaflets o-jugate usually rather broad, 
unequal at base, bearded on under surface at axils of veins; 
petiolar gland considerable; jugal glands few; flowers in axillary 
shortly-pedunculate racemes; pedicels short (Zropical America).— 
See p. 23. 
4. Piptadenia Bznta.—Flowers of Stryphnodendron. Legume 
stipitate or subsessile, broadly linear, membranous or coriaceous, 
2-valved, continuous and wanting pulp within; valves entire ; 
seeds compressed.—Trees or shrubs, unarmed or prickly; leaves 
2-pinnate; leaflets small oc-jugate, or more rarely larger pauci- 
jugate; petiolar and jugal glands rarely absent; flowers in spikes 
or racemes ; inflorescence either long cylindrical or globose, pedun- 
culate, solitary axillary, or often panicled at extremities of twigs 
(Tropical America and Africa).—See p. 24. 
5. Plathymenia Bzenta.—Flowers of Stryphnodendron. Legume 
broadly-linear straight plano-compressed thin ; exocarp continuous 
2-valved; endocarp separating from it, lomentaceous, transversely 
articulated ; segments persisting round single included transverse 
seeds.—Trees or shrubs, unarmed; leaves 2-pinnate; leaflets and 
pinne usually o-jugate; petiolar and jugal glands very rarely 
absent; flowers in cylindrical pedunculate, supra-axillary or panicled, 
spikes or racemes ; axil of leaf often sheltering a gland or bud below 
inflorescence (Brazil).—See p. 25. 
6. Xylia Bunta.—Flowers (of Adenanthera) 4-, 5-merous ; recep- 
tacle obconical; stamens 8-10; anthers crowned by a minute stipi- 
tate deciduous gland. Legume sessile broadly falciform plano- 
compressed thick, woody 2-valved, spuriously septate within be- 
tween transverse obovate compressed seeds.—An unarmed tree ; 
leaves 2-pinnate; pinne l-jugate; leaflets large paucijugate; 
petiolar glands more or less prominent; stipules minute deciduous . 
inflorescence capitate; heads globose pedunculate axillary fascicled, 
or racemose at extremities of branches (Lropical Asia).—See p. 25. 
