CONTRIBUTIONS TO BOTANY. 
171 
radice tuberculosa; caulibus erectis, simplicibus, solitariis vel 
pluribus, subtetragonis, toraentosis; folds ovatis, imo rotun- 
datis aut truncatis, rarius subcordatis, apice obtusis vel acutis, 
mucronatis (superioribus minoribus), marginibus subintegris 
aut plus minusve crenatis, adpresse imbricatis, coriaceis, 5-7- 
nerviis, nervis rectis, extus valde ramosis, supra niolliter sub- 
pilosis, reticulatis, subtus pallidioribus, cinereo tomentosis, 
nervis prominulis ; petiolo brevi, tomentoso : paniculis ^ axil- 
laribus, 2-3, fasciculatis, petiolo triplo longioribus, pilosulis, 
subcorymbosis ; pedunculis tenuissimis, ramisque ebracteatis, 
pedicellis bracteola minima donatis : racemo $ imbricatim 
bracteato; bracteis foliolosis, orbicularibus, tomentosis; flori- 
bus 5, brevissime pedicellatis, in axillulis fasciculatis; sepalo 
obovato, denticulato, unguiculato, petaloque orbicular! dimidio 
breviore extus pilosis. — In Brasilia, prov. Minas Geraes et 
Goyaz (St. Hil.) ; v. s. in herb, meo, ^ , Ceara (Gardner, 1445 
bis ) ; in herb. DC. (j'Sc ? , Cuyaba; in herb. Hook. ^ , Entre 
Rios (Tweedie). 
This species is found principally in the upland campos of the 
central provinces of Brazil, and extends as far south as the terri- 
tory of Uruguay, everywhere growing in the pasturages, where 
it is called Orelha de Onc^a, and is much used as a febrifuge. 
It may be recognized by its thick, subcoriaceous, elliptic leaves, 
with prominent and nearly parallel or slightly divergent ner- 
vures, which are externally branched and tend straight to the 
margin, terminating in the sinus of each crenature; they are 
rounded and truncated at base in the ^ , and obtusely narrowed 
or rarely cordate at base in the $ , and palately fixed upon ex- 
tremely short petioles. It differs from C. crenata in its more 
oblong or elliptic leaves, obsoletely crenated or entire on the 
margins, and other characters. Its simple stem, bare of 
leaves at its base, rises to the height of 1 or 2 feet ; its sub- 
imbricated leaves, about I inch apart, are 1^-3^ inches long, 
1^-2 inches broad, on a petiole 3 lines in the (J, and 2 lines 
long in the ? ; they are of a pale dull green above, and covered 
beneath with short ashy-grey tomentum. The peduncle is 
5-6 lines long, trichotomously divided; the sepals are spathu- 
lately oblong, sparsely pilose outside; the ? raceme is 1| inch 
long, its bracts 4^5 lines in diam. ; the drupes are ovate, com- 
pressed, and very pilose, the putamen being 4 lines long and 
3 lines broad. 
There is no essential difference between the above diagnosis 
and that of St. Hilaire^s Cissampelos subtriangularis, except that 
the leaves are somewhat smaller. Tweedie^s specimen from Entre 
Rios quite accords with the latter : this is a cJ specimen, while 
z 2 
