476 LXIX. RUBIACEE. [Canthium 
spreading at the time of the flower, rather fleshy, soon turning 
ferruginous-fuscous ; stamens glabrous, 5, inserted on the throat 
of the corolla, alternating with the lobes; filaments shorter than 
the anthers; anthers sagittate-lanceolate, 2-celled, dehiscing 
longitudinally, of a cinnamon colour even in the bud; disk 
annular, fleshy, glabrous; ovary 2-celled, ovules solitary in the 
cells, pendulous; style glabrous, filiform, rather fleshy, smooth, 
exserted, 2 in. long; stigma thick, ovoid, calyptriform, green, 25 
in. long, with several longitudinal whitish membranous angles ; 
fruits drupaceous, pea-shaped, usually didymous, green when 
unripe, about }in. long, arranged in cymes 4 to 5 in. in diameter. 
Sometimes heterophyllous, with a few cordiform smaller leaves in 
addition to the ordinary ones. 
GOLUNGO ALTO.—In the dense primitive forests of Alto Queta, 
sparingly and flowering rather rarely ; fl. middle of March 1856. The 
natives call this (and also C. golungense Hiern, No. 3153) ‘“‘ Molemba 
N-gongo”’ or “ Mulangel-Ngombe ” or “ Muhunca-Hunga.” No. 3148. 
In the elevated forests of Alto Queta ; unripe fr. July 1856. No. 3149. 
9. C, hispidum Benth. in Hook. Niger Fl. p. 409; Hiern, /.c.,p.140. 
GoLuneo ALTO.—A sarmentose shrub, 4 to 6 ft.'high ; leaves black- 
green, shining, membranous, rather rigid; flowers tetramerous ; 
corolla white outside, soon turning a little pale-yellowish ; lobes of the 
limb reflexed at the time of full flower, inside of a deep sulphur colour, 
the whole corolla soon turning red; throat bearded ; stigma green, 
mitriform, vertically winged with delicately membranous lamine. 
By the lower thickets of the mountains of Queta, also near N-delle, 
not uncommon ; fl. end of Dec. 1855, and in March 1856. Sometimes 
heterophyllous as in Polyspheria and C. sylraticum. No. 3185. A sub- 
sarmentose shrub 5 to 7ft. high ; stem quadrangular, sulcate; branches 
opposite, quite patent or even reflexed ; branchlets hirsute with rigid 
distant ferruginous hairs ; the younger leaves very densely ferruginous- 
hirsute, the adult ones bright herbaceous-green ; bracts ovate from a 
broad base, acuminate, hirsute with rigid distant ferruginous hairs ; 
berries pea-shaped. By thickets along the river Cuango at the base 
of the mountains of Alto Queta ; fr. Aug. 1855. No. 3136. 
C. congense Hiern, J.c., p. 141. 
Punco ANponGo,—A robust sarmentose nearly scandent shrub, 
with pale-yellowish flowers. In thickets by the river Lutete ; fl. 
18 Oct. 1856. No. 3142. 
Bumpo.—Flowers white. In shady places by the river Bumbo ; fl. 
Oct. 1859. No. 3140. 
10. C. huillense Hiern, sp. n. 
A hard rigid erect shrub, 2 to 4 ft. high ; branches subterete or 
roundedly tetragonal, ashy, glabrate; branchlets opposite, decus- 
sate, patent, shortly pubescent or glabrescent, sometimes fore- 
shortened and quasi spine-like ; leaves ovate or oval, obtuse at the 
apex, unequal and usually obtuse at the base, thinly coriaceous or 
firmly submembranous, glabrate or puberulous especially along 
the midrib and in the axils of the 2 to 4 inconspicuous veins on 
each side of the midrib beneath, ? to 14 in. long by } to 3 in. 
broad, green on both faces, somewhat fleshy, often concave or 
