186 NATURAL HISTORY OF PLANTS. 
64. Prioria Griszs.—Flowers of Hardwichkia; sepals 5, closely 
imbricated, stamens 10, free perigynous ; anthers introrse versatile ; 
connective apiculate. Germen central, shortly stipitate, 2-ovulate ; 
style subulate; apex minute stigmatiferous. Fruit obliquely ob- 
ovate-orbicular, plano-compressed, coriaceous-woody, 2-valved. Seed 
1, large flat; embryo exalbuminous; cotyledons cohering ; radicle 
short thick.—An unarmed tree; leaves paripinnate ; leaflets coria- 
ceous 1, 2-jugate; stipules scale-like; flowers minute, in much- 
branched terminal spikes; bracts minute; bractlets lateral, connate 
into a 2-lobed cup a little shorter than calyx (Central America and 
West Indies). See p. 187. 
65. Cynometra L.—Flowers (of Hardwickia), 4—5-merous ; calyx 
imbricated. Petals 4, 5, alternate, nearly equal or 3 inferior smaller, 
imbricated. Stamens 10—«, free. Germen central, 2-owulate ; apex 
of style truncate or dilated, stigmatiferous. Fruit thick, turgid or 
compressed, usually wrinkled or warty outside, straight or oftener 
arched, 2-valved. Seed exalbuminous; hilum ventral.—Trees or 
shrubs, unarmed ; leaves paripinnate; leaflets oblique unsymmetrical 
coriaceous, 1, or paucijugate ; flowers racemose ; racemes often short or 
umbelliform, axillary or lateral on wood of stem or branches ; superior 
bracts of raceme small, inferior often much larger, imbricated ; 
bractlets 0 or membranous, coloured (All tropical regions). See 
p. 138. 
66. Pterogyne TuL.—Flowers of Cynometra; perianth scarcely 
perigynous. Stamens 10, free. Germen shortly stipitate, winged 
at superior side, 1-ovulate ; style short ; apex truncate stigmatiferous. 
Fruit plano-compressed samaroid indehiscent ; wing thin rigid oblong 
falcate veined: Seed descending; embryo exalbuminous; radicle 
straight exserted—An unarmed tree; leaves paripinnate ; stipules 
minute; flowers very small, in short axillary catkin-like racemes ; 
bracts scale-like, in younger inflorescences much imbricated, finally 
deciduous (Southern Brazil), See p. 138. 
67. Sindora Mie.—Flowers of Copaifera ; sepals 4, with obliquely 
cut margins, narrowly imbricated or subvalvate; highest sepal 
broader. Petal 1, superior vexillary sessile, plaited. Stamens 10, sub- 
l-adelphous or 2-adelphous (9-1), anthers introrse 2-celled, longitu- 
