LEGUMINOSA-CAISALPINIEZ. 107 
too, which has been made the type of a distinct genus under the name 
of Inésia,' the number of stamens is also reduced to seven. Of these 
three have well-developed fertile anthers—namely, the two superposed 
to the lateral sepals and the anterior one. But on either side of this 
last we only find a staminode or lateral sterile tongue, and on either 
side of the median line of the posterior petal is a little stamen 
whose anther is present, but has unequal cells or only one cell, and 
contains no pollen.* Moreover, the pod, dehiscing in two valves, has 
thinner walls with ill-marked partitions between the seeds, which 
are exarillate. Afzelia may then be split into two subgenera. Some 
half-score species are known,’ from tropical countries in the Old 
World. The alternate leaves are pari- or subimparipinnate, with a 
few glabrous coriaceous leaflets. The flowers form simple or ramified 
terminal racemes. Lach flower igs axillary to a caducous bract, and 
accompanied by two concave more or less persistent lateral bractlets, 
which are not sufficiently developed to cover the bud completely. 
Didelotia’ is the genus of this group in which this reduction of 
the perianth is carried to its greatest extent. We only find ten little 
scales of very variable form on the rim of the concave receptacle, 
representing the five sepals and the five alternating petals; and even 
of these several may become almost imperceptible or be quite absent. 
The protection of the sexual organs, usually assigned to the perianth, 
here devolves on the two lateral bractlets, which, placed edge to edge, 
as in Berlinia, Vouapa, Humboldtia, &c., long cover the whole flower- 
bud. The androceum consists of ten free perigynous stamens; some- 
times these are all fertile, with introrse two-celled anthers ; sometimes 
the five that correspond with the petals are reduced to sterile fila- 
ments variably developed. The gynzceum is that of the preceding 
genera, similarly situated on the vexillary side of the receptacle; it 
becomes a flattened elongated stipitate bivalve pod, with exalbu- 
minons seeds. The genus consists of three species of trees from 
tropical Africa.’ The alternate leaves are paripinnate, possessing one 
1 Dur.-Tu., Nov. Gen, Madag., 22, n. 75.— 
DC., Prodr., ii. 509.—ENpL., Gen., n. 6798.— 
? Pahudia Miq., Fl. Ind.-Bat., i. p. i. 86.—B. H., 
Gen., 580, u. 346. In this last the stamens are 
said to be monadelphous, as in the section Parivoa 
of the preceding genus. 
2 This fact is perhaps not constant. 
3 Ricu., Guiip. et Perr., Fl. Seneg. Tent., 
i, 263, t. 57.—CoLEBR., in Trans. Linn. Soc., 
xii. t.17.—A. Gray, Bot. Unit. States Expl. 
Eixp., t. 51.—Ku., in Pet. Moss. Bot. 19.— 
Watp., Ann., ii. 447 ; iv. 594, 608, 610.—OLIv., 
Fil. Trop. Afr., ii. 301. 
4H. By., in Adansonia, vy. 867, t. viiii— 
B. H., Gen. 1008, n. 351 a.—Brachystegia 
BEnTH., Gen., 582, n. 351? 
5 Bentn., in Trans. Linn. Soc., xxv. 311 6. 
42, B. 
