372 Mr. J. Miers on the Menispermacee. 
in Homocnemia its four stamens are monadelphous to near their 
apex ; while in Detandra and Syrrhonema (each with only three 
stamens) these are united together for more than half their 
length. 
Psrxium, Lour.—Flores dioici. Masc. Sepala 6, spathulato- 
oblonga, basi longe unguiculata, 2-serialia, 3 exteriora paulo 
minora, utrinque pilosa. Petula 6, glabra, sepalis quinto’ 
breviora, spathulato-oblonga, lateribus inflexis, subauriculatis, 
summo incurvata. Stamina 6, equalia; filamenta teretia, ul- 
tra medium in columnam centralem monadelpham coalita, 
3 interiora fere ad apicem conjuncta; anthere subglobose, 
subquadrilob, subextrorsum apicifixee, utrinque rima trans- 
versali dehiscentes.—FV. faem. ignot. 
Frutex scandens, Cochinchinensis, pubescens; folia reniformia, 
5-nervia ; petiolus tenuis; panicule bine, supra-axillares, pe- 
tiolo multo breviora. 
The single species, Pselium ambiguum, is described in the 
3rd vol. of ‘Contributions to Botany.’ 
23. ILEOcARPUS. 
This genus was proposed by me in 1851 for a plant in Schim- 
per’s Abyssinian collection: it is allied to Pericampylus and 
Menispermum on account of its putamen and seed, and approaches 
the following genus, Homocnemia. It differs, however, from 
Menispermum in its isomerous stamens, and from Pericampylus 
in its peltate leaves, in having only three membranaceous sepals, 
three smaller alternate petals, and a single ovary, with a short 
thick style and a somewhat erect stigma. Homocnemia differs 
from it in its tetramerous arrangement, having four sepals, four 
minute petals, and one compressed ovary on a disk-shaped sup- 
port, and an obsoletely 2-lobed stigma. The authors of the 
‘Flora Indica’ and of the new ‘Genera Plantarum’ unite this 
genus with Stephania, and strangely assert that the typical plant 
is not distinguishable from Stephania hernandifolia. But Ileo- 
carpus cannot be reconciled in any way with Stephania, on ac- 
count of the absence of the perforation in the condyle, the pre- 
sence of which is a universal feature in every species of that 
genus that I have seen. It cannot be denied that the plant in 
question has peltate leaves, and a habit like that of Stephania ; 
but not more so than are found in Cyclea, Clypea, and many 
species of Cissampelos ; the latter and Clypea are indeed the only 
genera among the whole group that harmonize with [/leocarpus 
in the structure of the putamen ; the latter genus differs from all 
the rest in the shortness of its cotyledons compared with the 
length of the radicle. 
