LEGUMINOSZ-CHISALPINIEZ. 103 
? 
contain a variable amount of pollen.” V. crassifolia’ affords a transition 
between this and the American species in its androceum, possessing 
three large stamens with fertile anthers, and four little ones of 
which the two lateral have a small anther, and the two others have 
only a little glandular swelling at the tip. We have further examined 
two African species which constitute the types of the sections Zripli- 
someris and Pentisomeris of Vouapa, which complete our knowledge of 
the floral symmetry of this group; for the former? has only two 
small petals, the three posterior being of nearly equal size; and the 
latter* has the two posterior sepals quite free instead of being united 
for some distance, so that the quinary type of the calyx is completely 
Vouapa (Anthonota) macrophylla. 
Fia. 79. 
Flower (2). 
Fie. 80. 
Longitudinal section of flower. 
restored. The ovary, inserted at a variable distance from the bottom 
of the receptacle (figs. 78, 80), contains from two or three to an in- 
definite number of descending ovules, and ends in a style somewhat 
dilated at its stigmatiferous apex. The fruit is a few-seeded bivalve 
pod of very variable form,’ containing flattened exalbuminous seeds. 
The genus Vouapa consists of unarmed trees from tropical Africa and 
America; some twenty species, as mentioned above, are known. 
1H. By., in Adansonia, vi. 179, note 1 [“pro- 
bably not distinct,” from 7%. macrophylla (OLIV., 
op, cit., ii. 298).] 
2 V. explicans H. Bn., loc. cit., 181, note 8 
3 TV. demonstrans H. By., loc, cit., 180, 
note 1, t. iii, figs. 1-5. We must note that in 
most of these species the vexillary petal being 
so very large, envelopes all the other elements of 
the corolla in the bud, and often too even part 
of the calyx, namely, the three anterior sepals. 
Thus the ordinary prefloration of the Cesalpiniee 
may disappear:in this genus, and be replaced 
by a true vexillary estivation, as occurs, 
though much more rarely, in the Tamarind (p. 99, 
note 5). 
4In V. acaciefolia (Macrolobium acacie- 
folium Brntx.), the fruit is thus described by 
Bentuam: “ Legumen leve, suturis non ineras- 
satis et seminis cotyledones insigniter corrugate, 
sed flores et inflorescentia nequaquam a ceteris 
speciebus distinguuntur.” 
5 W., Spec. i. 186.—K., Zwet Abhandl., 
13, t. 2.—Bunru., in Hook. Jowrn., ii, 239; in 
Trans. Linn. Soe. xxv. 307.— Kanst., Fl, 
Columb., t. 75.—Waxp., Rep., i. 845; v. 570; 
Amn, ii. 448. 
