OF BRAZILIAN RUBIACEX. 235 
5. C. concolor, Spruce; glaber, stipulis abbreviatis, foliis obovali-ellip- 
ticis acuminatis, spica glabra, floribus pedicellatis, corolle tubo 
elongato tenui glabro.—Fruter. Stipule connate, truncate, cupu- 
lates, arcte adnate, margine subfimbriate, lineam longz. " Folia 
semipedalia, 3 poll. lata, apice in acumen angustum obtusum abrupte 
producta, basi plus minus acutata, petiolo brevi. Spice (v. potius 
racemi rigidi spiciformes) foliis breviores. Flores crebri, sparsi, 
pedieello rigido erecto 1-2 lin. longo, apice in cupulam expanso. 
Calyx 1% lin. longus, limbo truncato vix dentato. Corolle tubus 9 
lin. longus; lacini: 4-5 lin. longe, extus glabre, intus leviter cine- 
reo-puberule. Anthere appendice lanceolata nec arista terminate, 
membrana baseos retusa vel breviter bifida. 
On the borders of an elevated sandy campo near Uananaca on the Rio 
Negro, R. Spruce. A shrub of 9 feet, with long branches often decum- 
bent. Leaves pale green on both sides. Corolla greenish tinged with 
brown, flesh-coloured inside. Berry globose, scarlet. 
In Mr. Spruce’s Santarem collection, a species of Calycophyllum was 
by mistake referred to Macrocnemum, under the name of M. subsessile. 
It differs chiefly from C. coccineum in having the leaves almost sessile 
and differently shaped at the base, but is perhaps a mere variety of that 
species. . 
Psychotria n. 2, of Mr. Spruce's first Barra collection, belongs to 
Rudgea, as defined in the Linnea, vol. xxiii. p. 455. It is a new spe- 
cies, since again distributed as Rudgea villosa ; there are two other new 
species of the same genus in the last collection. 
A further examination of Brazilian Psychotrie confirms the sections 
proposed by me in Oersted's paper on Central American Rubiacee ; but 
leaves more and more doubtful the line of demarcation between Pyscho- 
tria and Cephaelis. 
I there suggested that Achille Richard’s Ronabee with terminal in- 
florescence, must be Psychotria of my section Eupsychotria; I have 
since ascertained that Aublet’s original Ronabea is very different, and 
identical with Coffea subsessilis (Benth. in Hook. Journ. Bot. vol. iii. 
P- 232, non aliorum); it is certainly no true Coffea, and probably stands 
alone, or nearly alone, as a distinct genus. 
Coussarea of Aublet is a true Faramea, which genus however does 
