A REVISION OF ACRIDOCARPUS 195 
Bocas his own No, 272 and Schweinfurth’s No. 454—all from 
ocot 
0. Niedenzu (in Engler & Prantl, Pflanzenfamilien, iii. 4, 
60) 2 ve a somewhat modified oo of the genus, and estimated 
the number of species at eleve 
1894. Baillon (Hist. Nat. PL. Madagascar, Atlas, t. 267) figured 
a new species from Madagascar—A. Humblotii. 
895. Engler and Niedenzu (Die Pilanzenwel, CO, 232) enume- 
rated only a single species, A. zanzibaricus, as occurring in Tropical 
East Africa, omitting A. chloropterus Oliy., “ppawenal through 
inadvertence 
1896. Oliver (in Hook. Ic. Pl. tt. 2482-8) redescribed and 
figured 4. orientalis Juss., and to Sag the Socotra specimens 
referred by Balfour fil. to A entalis aS a new species, A. soco- 
tranus, Me he ‘lao described ‘ad eee 
9 ildeman and Duran d (Comptes-rendus Soc. 
Roy. 
Bot. Belgique, XxxXvilil. 28) described 4 . rudis, & new species ed 
the . e State. 
2 De ‘Wildemain (Ann. Mus. Congo, Bot. sér. 4, p. 27, t. = 
desartbod and figured a new species from “the Congo Free State, A 
erie ve which he stated i allied to A. plagiopterus 
902. Engler (Ann. R. Istit. bot. di Roma, i x. 258) described 
A. glaucescens, a new species ne Somaliland, ‘which he stated to 
be allied to A. zanzibaricus, 
1905. Engler (Bot. Jahrb. xxxvi, 250) described four new 
species and two new varieties of Acridocarpus—two spe cies (A. fer- 
sated and A. Schefleri) from Tropical East Africa, apr two (4. 
acrocalyx and A. brevipetiolatus) from the Cameroons. The two 
pa varieties ere d. Smeathmanni var. Staudtii and Me Smeath- 
mannt var. Tries 
NorTEs ON CERTAIN LESS KNOWN SPECIES. 
From the foregoing summary it may be gathered that, altogether, 
twenty-seven species * Acridocarpus have been publi lished up to the 
present date. Three of them, viz., A. angolensis, A. galphimia- 
folius, and A. prianoae: revs long been recognized as constituting 
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is, from the description, e evidently not an deridocarpus. A specimen 
in the Kew Herbarium, collected at Ambarasaha, Madagascar, by 
Bojer, agrees very well ‘with te ussieu's description. Like the speci- 
men examined by Jussieu, it has only male flowers. Unisexu 
flowers are of such rare occurrence in Malpighiacea, that our choice 
is narrowed down to the genera Triaspis and Microstetra, and from 
the habit, I have little hesttaticit in referring A.? argyrophyllus to 
the former. It may possibly 8 one of the species b 
Baillon in hi j tes de 
ee 
Jussieu’s description. It has glands on the bracteoles, and anthers 
which dehisce by longitudinal slits instead of by terminal pores. 
Jussieu doadeibed a variety 8 porantherus, which differed from the 
