232 NEW GENERA AND SPECIES 
racy, and substitute it for that of Aspidanthera, notwithstanding the 
claims of the latter on the ground of priority. 
I see nothing to alter in the generic character given by Weddell, nor 
yet in his account of the species described by him, which must now. be 
increased to three, as follows :— 
1. G. chlorantha, Wedd. Quinq. p. 96. t. 26. f. B.—I believe I am 
right in identifying this.species with the Roraima specimens gathered by 
the brothers Schomburgk, and distributed under n. 621 of Sir Robert's 
second collection, and n. 955 of Richard Schomburgk. 
2. G. longiflora; foliis ovali- v. oblongo-ellipticis acuminatis basi rotun- 
datis angustatisve submembranaceis utrinque glaberrimis, calycis den- 
tibus 4 triangularibus, corollz tubo tenui limbo suo triplo longiore. 
Apparently common on the Rio Negro, where it forms a shrub or 
small tree from 8 to 20 feet in height. The corolla is sweet-scented, 
white, with a greenish tube, and the limb turning at length a brownish- 
red. It was found both by Schomburgk and Spruce, but in two dif- 
ferent states, which I at first considered as distinct species; additional 
specimens however have induced me to reunite them as mere varieties 
with the following synonymy :— ` 
a. densiflora.—Aspidanthera rudgeoides, Benth, in Hook. Journ. Bot. 
vol. iii. p. 217.—On the Rio Negro, Schomburgh. 
B. laxiflora.— Gomphosia (Aspidanthera) laxiflora, Benth. in Pl. 
Spruce exs.—On the Rio Negro, near Barra, and upwards, Spruce. 
Both varieties differ from G. chlorantha in foliage, and we in 
the slender tube of the corolla, which is near 9 lines long. 
3. G. Goudotiana, Wedd. Quinq. p. 97, from New Granada, is un- 
known to me. 
CoMMIANTHUS, Benth. 
(Trib. Cordieree.) 
This beautiful genus has been increased, by the researches of Mr. 
Spruce, to five species, all agreeing with the original one in its generic 
character, spicate inflorescence, and gummy exudations, but showing 
marked differences in foliage, indumentum, size and proportions of 
flowers, ete. As I now possess them all in flower, as well as in fruit, 
either ripe or nearly so, I subjoin a detailed character and synopsis of 
the whole genus. 
Char. Gen. CoMMIANTHUS. — Calycis limbus tubulosus, persistens, 
