Erythrococca and Micrococca . 587 
three species:— C.pauciflorum, Muell. arg.; C. trichogyne , Muell. arg.; and 
C. triste, Muell. arg. (Journ. Bot.. ii. 333, 334); all of which agree with 
Euclaoxylon , but differ from Hooker’s Athroandra , in having the stigmas 
plumosely laciniate and in having the hypogynous scales which alternate 
with their carpels discrete, whereas in Athroandra these scales, if free, are 
contiguous by their margins under the base of the ovary ; more usually, 
however, they are connate in a disc. In the case of C. trichogyne and 
C. triste , moreover, the ovaries are densely strigose, whereas in every true 
Athroandra the ovary is glabrous ; the stipules, too, are accrescent and 
harden into cartilaginous bosses or thornlets, whereas in every true Athroandra 
the stipules, although hyaline-scarious, are very minute and do not become 
altered or enlarged. But while it is, at least, inconvenient to include these 
species in Athroandra , their generic relationship is almost certain; the 
perulate buds, as Mueller remarks (DC. Prodr., xv. 2, 779), undoubtedly 
indicate their affinity. 
The section Adenoclaoxylon , based on a solitary species, C. Kirkii , 
Muell. arg. (Flora, xlvii. 436), is as distinct and natural as the section 
Athroandra when taken in the sense outlined by Hooker. Now, however, 
that seven species belonging to this section are known, it is found that 
the arrangement of the receptacular glands, used by Mueller along with 
the character of perulate buds in its definition, is not constant. As originally 
described, the section differs from Athroandra and from Euclaoxylon by 
the presence of a ring of extrastaminal glands. But this extrastaminal 
ring may be imperfect or altogether absent, and the distinctive feature of 
the section, apart from the perulate buds, is the circumstance that the 
male flowers are in axillary glomerules, whereas in the rest of the genus 
these are in racemes. All the species in the section share with C. trichogyne 
and C. triste accrescent spinulous stipules, discrete hypogynous scales, and 
plumosely laciniate stigmas, and differ in these three characters from every 
true Athroandra. These three characters the section further shares with 
the genus Erythrococca , Benth. (Hook., Niger Flor., 5c6), to the consideration 
of which we may now give our attention. 
Historical Review of Erythrococca. 
The genus Erythrococca was founded by Bentham on specimens of 
a plant collected in Sierra Leone by Vogel and in Senegambia by Heudelot. 
But specimens of the same species, collected in Sierra Leone by Smeathman, 
had already been described by Poiret,in 1810, as A delia anomala , Juss. (Encyc. 
Meth. Suppl., i. 132). Poiret only describes the female flowers ; his general 
account contains the statement that the leaves are axillary to the spines, 
but omits to note the perulate buds. In 1824 A. de Jussieu dealt again 
with some of Smeathman’s specimens (Tent. Gen. Euphorb., 32). He had 
male specimens before him, even if Poiret had not any ; if he had a female 
