388 JOURNAL OF THE WASHINGTON ACADEMY OF SCIENCES VOL. 13, No 17 
floribus cymosis, breviter -pedicellatis, pedicellis calycibusque tubi apice 
pilis glandulosis coronato excepto glaberrimis; calycis lobis brevibus ovato- 
obtusis, longe ciliatis; petalis roseis, orbiculatis, glanduloso-ciliatis, densiuscule 
punctatis; staminibus 8, antheris subrostratis; ovario glabro, calyci adherente; 
stylo apice truncato. 
Frutex ramosissimus, ca. 1 m. altus; rami gracili, angulosi, fusco-virides. 
Petioli 4~-9 mm. longi, dense hirti; laminae supra solute virides, subtus pal- 
lidiores, 1.5-2.5 em. longae, 1-1.5 em. latae. Pedicelli ca. 2 mm. longi; 
calycis tubus 5 mm. longus, 3.5 mm. latus, purpurascens, lobi 1-1.5 mm. longi; 
petala 5.5 mm. longa lataque; filamenta staminorum majorum 4.5 mm. 
longa; antherae majores ca. 4 mm. longae, cauda cultriformi arcuata basi 
crassiore 5 mm. longa; antherae minores erectae, 3-3.5 mm. longae, cauda 
breviore, refracta, lineari; stylus ca. 5 mm. longus. 
VENEZUELA: Between Palmira and Pdramo de la Sal, 2700 m., Andes of 
Mérida, fl. September 1, 1921, Jahn 607 (type). 
This elegant species should be placed near M: onochaetum glanduliferum 
Triana, from which it differs in the longer, sparsely glandular indument, the 
leaves: with longer petioles and also scarcely glandular, and the perfectly 
glabrous calyx tube ending in a dense crown of glandular hairs, and with 
glabrous, ciliate lobes. The stamens are also very distinct in shape and size 
and the drawing of the anthers differs from that accompanying the original 
description of M. glanduliferum. 
MoNOcHAETUM DiscoLor Karsten ex Triana, Trans. Linn. Soc. 28: 63. 1871. 
A striking and not very well-known species, the description of which can be 
completed as follows: 
Petioli 2.5-4 mm. longi (sed nunquam 6 mm. ); laminae 15-18 mm. longae, 
7-10 mm. latae, subtus canescentes et strigillosae. Flores numerosi, pedun- 
culis adpresse setulosis 5-10 mm. longis. Calycis tubus subglobosus, indis- 
tincte 8-costatus, circa 4 mm. longus, lobulis acuminato-triangularibus tubum 
subaequantibus vel longioribus, basi 3-3.5 mm. latis. Petala obovata, basi 
sensim cuneata, apicem versus minute strigosa, margine ciliolata, 13 mm. 
longa, 8 mm. lata. Stamina inaequalia, filamentis 6-7 mm. longis, planis, 
plusminusve distortis, antherarum caudis loculam subaequantibus velinterdum 
multo longioribus foliaceisque. Stylus 7-8 mm. longus, glaber; stigma 
punctiforme. . 
VENEZUELA: Agua de Obispo, Trujillo, 2500 m., fl. September 24, 1922, 
Jahn 1165. 
Up to the present, eight species of the genus Monochaetum have been 
reported from Venezuela, all from the andine or subandine belts with the 
exception of M. multiflorum Naud., which was collected near Esmeralda on 
the open plains of the Orinoco by Bonpland, but is also indicated as growing 
in the Quindio, an elevated region of Colombia. These Venezuelan species 
can be distinguished by the following key. 
Monochaetum. 
Calyx lobes deciduous (Grischowia). 
Branchlets densely villous; leaves 7-9-pilinerved; calyx 12-15 mm., the 
lobes 15~18 mm: long: 2.45.2 ee eee 1. M. hirtum Triana. 
