18 Mr. J. Miers on the Menispermacee. 
longitudinal suture corresponding with a narrow semiseptum, 
which renders them 2-locellate. We may perceive in the above 
peculiar characters some analogy towards Parabena and Syrrho- 
nema, from which genera it differs in many respects. 
I have here described two species, one of which Dr. Eichler 
has made a third species of his genus Sychnosepalum; but I 
have shown, under my description of the latter genus, how much 
dissimilarity exists between them: it differs in its habit, its sub- 
peltate leaves, its inflorescence and the structure of its flowers. 
The Somphoxylon of the same botanist is at variance with De- 
tandra only in its more expanded panicle, minute flowers, and 
the smaller number of its sepals (frequently an inconstant 
character) ; it agrees in the number, shape, and relative size of 
the petals, and exactly in its three monadelphous stamens. 
The species of Detandra have somewhat oval, subpeltate, 
coriaceous, 5-nerved leaves, which are glabrous and polished 
above, pale and tomentose beneath, on rather slender petioles: 
the inflorescence is a panicle shorter than the petiole, with short 
alternate branches, each bearing one to three alternate pedi- 
cellated flowers; the flower has fifteen to eighteen closely | 
imbricated sepals becoming gradually smaller externally (the 
upper moiety of the six interior and larger ones expanding 
horizontally, as in Chondodendrum), six petals in two series, 
which are oblong or lanceolate, unguiculated at the base, and 
entire or denticulated on the margin; the stamens are already 
described. 
Detanpra, nob.—Flores dioici. Masc. Sepala 14-17, in or- 
dine ternario ad torum subcylindricum imbricatim disposita, 
quorum 2-5 exteriora minutissima et bracteiformia, 6 inter- 
media ovato-oblonga et extus pilosiora, 6 interiora cuneato- 
oblonga, cum apicibus rotatim reflexis, omnia extus leviter 
tomentella et ciliolata. Petala 6, biseriata, subzequalia, sepalis 
dimidio breviora, unguiculato-oblonga vel lanceolata, erecta, 
glabra. Stamina 3, alte monadelpha, petalis longiora; fila- 
menta in columnam centralem fere ad summam coalita, apice 
hine crassiuscule et brevissime trifurca; anthere bilobe, lobis 
ovatis, majusculis, segregatis fet in “filamentum lateraliter 
semiimmersis, connectivo intermedio paululo excurrente, bi- 
locellatis, 2-valvatis, rima longitudinali dehiscentibus.—F/. 
fem. ignoti. 
Frutices Brasilienses scandentes ; rami striati, ad axillas cupuloso- 
nodosi; folia alterna, petiolata, subpeltata, ovata vel ovato- 
oblonga, imo rotundata vel sinu levi subtruncata, integra, co- 
riacea, 5-nervia, supra glabra, subtus pallide tomentosa: pani- 
cula azillaris, petiolo brevior, tomentosa, alternatim ramosa, 
