314 
CONTRIBUTIONS TO BOTANY. 
incauo-tomentosis, nervis bininneis prominentibus ; petiolo 
subtenui, striato, conipresso, subtomentoso, folio fere sequi- 
longo, paulo intra marginem inserto. — In prov. Diamantina 
Brasiliae. 
I have not *seen this plant, which was found in the far inland 
and elevated region of the Diamond district, without either 
flower or fruit, and which has been confounded by botanists 
with many different species. It differs from the two former, 
although it much resembles them in the peltate insertion of the 
petiole upon the blade, by its much larger leaves, which are as 
broad as, or even broader than, long, more deeply cordate, and 
obtusely triangular at the summit; they are 3^-6 inches long, 
4|-6 inches broad, with a basal sinus J inch deep, on a petiole 
inserted about a line within the margin of the sinus. 
Dr. Eichler has referred to this species many others here 
described, which will be seen to be very different ; and among 
them he includes, as another synonym, the Cissampelos Abutua 
of the ‘ Flora Fluminensis ’ (x. tab. 140), on account of its habit 
and the shape of its drupes; but that plant, in the form and 
size of its leaves, in their venation, and more especially in the 
size and oval shape of its drupes, offers a more complete resem- 
blance to Abuta, to which genus I referi’ed it long ago (Ann. 
Nat. Hist. ser. 3. vol. xiv. p. 258, et supra, p. 86) under the name 
of Abuta macrophylla {Cocculus macrophyllus, St.-Hil. & Tub), 
to which species it unquestionably belongs. Upon this point I 
can speak with confidence, having examined the same plant, 
which I collected in the forests near Rio de Janeiro. 
4. Chondrodendron obscurum, nob. ; — rarais altissime scandenti- 
bus, brunneo-opacis, cortice firmo, rugoso, tuberculis parvis 
signato; ramulis teretibus, valde striolatis, glabris, axillis 
subapproximatis, cupula magna prominente munitis; folds 
subpeltatis, late ovatis, imo leviter 2-sinuato truncatis, apice 
subacutis, mucronulatis, in nervo marginali prominente undu- 
lato-crenulatis, e basi 7-iierviis, nervis infimis mox evanes- 
centibus, utrinque glaberrimis, supra subnitidis, in nervis 
tenuibus subimmersis sulcatis, subtus sordide fulvescentibus, 
pruinoso-glaucis, nervis venisque valde reticulatis prominenti- 
bus ; petiolo imo breviter abrupte tumido, cum cupula arti- 
culate, apice longe incrassato, striato, pruinoso-brunneo, 
limbo fere sequilongo : panicula ex axillis aphyllis annotinis 
enata, brunneo tomentosa, latissime ramosa; rachi brevius- 
cula, crassa; ramis alternis, approximatis, elongatis, diver- 
gentibus, ultra medium nudis, dehinc patentim raraulosis, 
ramulis apice corymbulosis ; sepalis 15, in seriebus quinque 
circa torum cylindraceum arete imbricatis, alternis, fuscis. 
