168 NATURAL HISTORY OF PLANTS. 
and (on same tree) simply paripinnate; flowers in simple or 
fascicled or compound cymuliferous, axillary or lateral, racemes 
(North America, temperate and subtropical Asia). See p. 84. 
III. SCLEROLOBIEA. 
16. Sclerolobium Voc.—Flowers hermaphrodite subregular ; re- 
ceptacle cupuliform or shortly obconical, lined by a disk; mouth 
evenly or obliquely truncate. Sepals 5, subequal imbricated. Petals 
5, equal or slightly unequal, membranous imbricated, with highest 
petal innermost (Cosymée) ; or else thin linear unequal. Stamens 10, 
inserted with perianth ; filaments free, pilose at base, inflexed or folded 
in estivation; anthers uniform introrse, longitudinally 2-rimose. 
Germen central stipitate, inserted in bottom of receptacle, straight 
or oblique, «-ovulate; ovules descending 2-seriate; micropyle ex- 
trorse superior; style terminal slender; apex stigmatiferous, truncate 
or scarcely dilated. Legume shortly stipitate plano-compressed 
l--seeded indehiscent; exocarp often separable from thin sub- 
ligneous endocarp. Seeds large, orbicular or reniform; embryo 
exalbuminous; cotyledons leaf-like, cordate at base; radicle short 
straight.—Trees ; leaves impari- or paripinnate ; stipules minute or 0, 
more rarely leaf-like 1-3-foliolate ; flowers small numerous in much- 
branched terminal racemes; bracts small caducous (Zropical America). 
See p. 55. 
17. Diptychandra TuL.—Flowers of Sclerolobium; sepals and 
petals 5, imbricated. Stamens 10 (of Sclerolobium). Germen central 
stipitate pauciovulate ; style slender inflexed ; stigma terminal, trun- 
eated or slightly dilated. Legume shortly stipitate, short or elon- 
gated, plano-compressed, bare within, 2-valved; valves coriaceous ; 
margins nerviform. Seeds 1-8, transverse, orbicular or reniform, 
much compressed ; testa expanded into a marginal wing; embryo 
exalbuminous; cotyledons flat; radicle short straight—Unarmed 
trees or shrubs; leaves pari- or sub-imparipinnate ; leaflets with 
pellucid dots; stipules minute or 0; flowers in loose axillary and 
terminal racemes; bracts very caducous (Brazil, Bolivia). See 
p- 87. 
18, Poeppigia Presy.—Flowers of Diptychandra ; receptacle sub- 
