oct. 19, 1923 PITTIER: NEW OR LITTLE KNOWN MELASTOMATACEAE 385 
I have described a few of these new species, for which there is no 
proper place in my present official publications. Besides, I have now 
and then had the opportunity to examine some of my former collec- 
tions in Central America, Panama and Colombia, and have found 
among them several undescribed forms. Last, but not least, rare 
species established by older botanists are sometimes brought to light 
again, or others are found upon further examination to have been 
misplaced or misunderstood, good opportunities thus being offered 
for completing or correcting the original descriptions. The present 
paper deals with ten new or imperfectly known species of Melastoma- 
taceae from Venezuela and Panama. 
Chaetolepis sessilis Pittier, n. sp. 
Subprostrata, ramosissima, ramis diffusis, gracilibus, acute tetragonis, ad 
nodos sparse setulosis caeterum glabris; foliis sessilibus, oblongis, obsolete 
trinerviis, glabris, basi attenuatis, margine tenuiter remoteque glanduloso- 
denticulatis, apice subacutis, subtus tenuissime albo-punctatis; floribus 
breviter pedicellatis, ad apices ramulorum corymbosis; calyce tubuloso- 
campanulato, tubo leviter costato, sparsissime setuloso, dense albo-punctato, 
lobulis triangularibus, margine purpureo-setulosis, cum setis 2-3 rigidis pur- 
pureis basi tuberculatis alternantibus; petalis luteis, glabris, suborbicularibus, 
basi brevissime unguiculatis apice longe unisetosis; staminibus subaequalibus, 
filamentis glabris, vix attenuatis, antheris sublinearibus uniporosis, basi in 
connectivum articulatum leviter contractis; stylo glabro, staminibus multo 
breviore; capsula ovoidea, leviter costata, sparsissime setulosa, pedicellata. 
Caules 10-20 em. longi, adscendentes. Folia 0.6—4 cm. longa, 0.40.6 cm. 
lata, rigidiuscula, margine subrevoluta. Pedicelli0.4—0.6 mm. longi. Calycis 
tubus 4-5 mm. longus, lobi 2.5 mm. longi, basi 1.5 mm. lati. Petala 4—-5.5 
mm. longa lataque, seto terminale 1.5-2 mm. longo. Filamenta circiter 5.5 
mm. longa; antherae 4.5mm. longae. Capsula 6mm. longa, 4mm. diametroa. 
VENEZUELA: Péramo de Aricagua, 3200 m., Mérida, fl. March 31, 1522, 
A. Jahn 1037 (type). 
This species of the Section Euchaetolepis differs from C. alpina Naud., with 
which it has its greatest affinities, in its sessile leaves which are always oblong 
and without marginal bristles, its pedicellate flowers with elongate calyx 
sparsely covered with short appressed hairs, its orbiculate petals with a very 
long apical bristle, and its more elongated anthers. The leaves and calyx, 
moreover, are covered with white glandular dots. 
The following key gives the differential characters of the species of Chae- 
tolepis which are at present known to occur in Venezuela. 
Calyx lobes without intermediary appendages; petals obtuse at the apex. 
Anthers oblong; leaves 5-8 mm. long, papillose beneath. 
1. C. Lindeniana Cogn. 
Anthers ovoid; leaves 3-5 mm. long, densely hispid-hairy beneath 
2. C. alpestris Cogn. 
