MOUNT RORAIMA IN BRITISH GUIANA, 47 
pyramidales, minutissime rubro-glanduloss, floribus parvis ad apices ramorum 
confertis. Calyx profunde 4-lobus, glanduloso-punctatus, lobis oblongis obtusis. 
Corolla profunde 4-loba, glanduloso-punetata, lobis oblongis obtusis patentibus. 
Stamina 4, eorollze lobis breviora et prope basin inserta, filamentis quam antheris 
paulo brevioribus. 
A dicecious shrub, probably of dwarf habit, glabrous in all parts, with branches } in. 
thick, terete. Leaves chiefly near the apex of the stem, alternate, petiolate, coriaceous ; 
petiole 2—4 lin. long, rather stout; blade 14-24 in. long, 10-16 lin. broad, obovate or 
occasionally subelliptie, obtuse, rarely subacute, with revolute margins, entire, more or 
less densely covered with very minute red glands beneath. Panicles axillary, near the 
summits of the branches, narrowly oblong or pyramidal, 1-3] in. long, 4-1} in. broad, 
covered with minute red glands, with the flowers crowded at the ends of the short, 
rather distant, simple branches.  Bracts 1-1 lin. long, oblong, obtuse, dotted with rather 
large dark-coloured glands. Calyx 4-lobed nearly to the base ; lobes 4—% lin. long, oblong, 
obtuse, conspicuously gland-dotted. Corolla about 2 lin. diam., 4-lobed nearly to the 
base; lobes i-1 lin. long, rather more than 4 lin. broad, conspicuously gland-dotted. 
Stamens 4, shorter than and inserted towards the base of the corolla-lobes, with stout 
filaments rather shorter than the oblong, 4 lin. long anthers. Ovary rudimentary, minute, 
subulate, or none. Female tlowers not seen. 
Summit of Mount Roraima, 8600 ft., McConnell & Quelch, 665. 
A very distinct species, unlike any other. 
APOCYN ACE. 
MANDEVILLA GLABRA, N. E. Brown, sp. n. Caules volubiles, glabrescentes. Folia 
parva, distantia, petiolata, coriacea, lanceolata, acuminata, apice obtusa, glabra. 
Racemi brevissimi, pauciflori, axillares, glabri. Pedunculi et pedicelli brevissimi. 
Sepala parva, ovata, acuta, glabra. Corolla infundibularis, 2} poll. longa, extra 
glabra, intra ad insertionem staminum pilis deflexis dense barbata, lobis dolabri- 
formibus. Stamina inclusa, filamentis oblongis apice barbatis, antheris acutis, basi 
cordatis obtusis. 
Stem twining, about 1 lin. thick, glabrous or with a very few short scattered hairs, 
brown. Leaves opposite, distant, petiolate, coriaceous, glabrous; petiole 2-3 lin long; 
blade $-1 in. long, 33—4 lin. broad, lanceolate, acuminate, obtuse at the point, entire, 
with the midrib impressed above, prominent beneath, and having 5 or 6 small tubercles 
or glands scattered along it on the upper side, the lateral veins spreading, slightly 
impressed on both sides in the dried state, not very conspicuous. Racemes axillary, 
from one axil, very short, about 3-flowered in the specimen seen; glabrous. Peduncle 
about 1 lin. long, stout.  Pedicels alternate, 1-11 lin. long, stout. Sepals 1 lin. long, 
3-i lin. broad, ovate, acute, glabrous, each with a very short, transversely oblong, 
denticulate scale at its base inside. Corolla about 21 in. long, funnel-shaped ; tube 
curved, cylindrical and about 14 lin. diam. in the lower half, much enlarged and sub- 
campanulate in the upper half, glabrous outside and inside, except 5 broad lines that are 
