Neurocarpwa] LXIX, RUBIACEA, 439 
On elevated grassy slopes within the presidium ; fl. and fr. Feb. and 
April 1857. No, 5810. In woody rocky places near Muta-Lucala ; 
one specimen, ripe fr. March 1857. No. 5311. 
4. N. herbacea Hiern, sp. n. 
Pentas, sp. nov., Hiern ex Scott Elliot, U.c., p. 437. 
A slender erect herb, 2 to 24 ft. high, apparently annual, 
nearly simple or more or less branched; stem and branches 
puberulous above with short pallid hairs, glabrate below ; branch- 
lets compressed ; leaves opposite, elliptical or somewhat lanceolate, 
narrowed more or less at both ends, acutely so towards the base, 
thinly membranous, puberulous with short pallid hairs especially 
along the veins beneath, 2 to 34 in. long by 3 to 14 in. broad; 
lateral veins 8 to 10 on each side of the midrib, slender ; petiole 
ranging up to an inch in length, more or less densely puberulous ; 
stipules lanceolate or narrower, often with supplementary lateral 
filiform segments, hairy, about } in. long; cymes terminal or sub- 
terminal, small, crowded, more or less pedunculate, 4 to ? in. in 
diameter, elongating in fruit into an inflorescence ranging up to 
4 in. long; flowers subsessile, scarcely 4 in. long, white; calyx 
puberulous, unequally 5-lobed, nearly or just equalling the corolla ; 
corolla shortly salver-shaped, 5-lobed, slightly puberulous outside ; 
limb 53, to =}; in. in diameter ; throat bearded ; anthers 5, included, 
inserted in the throat of the corolla on very short filaments, 
glabrous ; style just included, bifid at the stigmatose apex ; ovary 
2-celled ; ovules numerous; fruit funnel-shaped below, + in. long 
exclusive of the persistent calyx-limb, 2-celled; seeds numerous. 
GoLunco ALTo.—In palm-groves near the river Cuango, at Caca- 
rambola, sparingly ; fl. and fr. Feb. and June 1855. No. 5304. 
8. PENTACARPZEA Hiern, gen. nov. 
Calyx-tube cup-shaped, adhering to the ovary, broad near the 
base, truncate at the apex, which is furnished with one foliaceous 
lanceolate lobe longer than the tube and 2 to 4 narrow short 
lobes, all the lobes more or less persistent. Corolla salver-shaped 
and somewhat funnel-shaped, hairy outside, tube elongated 
narrow, throat slightly dilated, bearded within ; limb spreading, 
somewhat unequal, with 5 obtuse lobes shorter than the tube, 
valvate in estivation. Stamens 5, inserted about the base of the 
corolla-tube ; anthers linear-oblong entire attached at the back 
near the base to very short filaments. Disk fleshy, small. Style 
filiform, divided at the apex into 5 short lobes which are stigmatose 
on all sides. Ovary wholly inferior, 5-celled; ovules numerous. 
Fruit ovoid, dry, for some time tipped by the persistent calyx- 
limb, 5-celled; cells many-seeded. 
This genus differs from Neurocarpea by the 5 cells in the ovary 
and fruit. 
1. P. arenaria. 
A perennial herb ; rootstock woody ; stems numerous, ascending, 
1 to 13 ft. long, simple or branched, reddish-brown, clothed 
with whitish short soft mixed hairs; leaves lanceolate ovate or 
