506 LXIX, RUBIACEA. [Lardavel 
puberulous, exserted ; stigma sub-capitate ; ovary 2-celled ; ovules 
solitary. 
Huitia.—In exposed sandy places in the more open forests, near 
the lake of Ivantala; fl. end of Feb. 1860. No. 3228. Differs from 7. 
arvensis by its shorter flowers, cartilaginous and thickened leaf-margin. 
7. T. andongensis Hiern, sp. n. 
An erect annual herb, 5 to 20 in. high, simple or dichotomous 
with sub-erect or ascending branches; stem and branches sub-terete, 
purplish below, leafy and hirsute with spreading whitish hairs or 
sub-glabrous above ; leaves narrowly linear acute and apiculate at 
the apex, somewhat narrowed gradually towards the base, sessile, 
scabrid, rigid, green above, pallid beneath, uni-nerved, 1} to 3 in. 
long, erect-patent on the uppermost ones spreading ; margin rather 
thickened, cartilaginous, whitish or scabrid ; stipules adnate to 
the bases of the leaves and so sheathing, hairy outside, glabrous 
inside, terminating at the truncate apex with several filiform 
elongated sete; flowers 4 in. long, sessile, crowded in sessile 
terminal and subterminal hemispherical or ovoid bracteolate 
heads ; bracteoles lanceolate-subulate, falling short of the calyx- 
limb ; heads based by approximated pairs of leaves and their 
sheathing stipules, and thus involucrate; calyx 3 in. long; the 
tube short, puberulous; the limb bipartite; the segments equal, 
lanceolate-subulate, puberulous outside, glabrous inside, ciliate ; 
corolla not exceeding the calyx-limb, funnel-shaped; the tube 
glabrous ; throat naked ; the lobes 4, lanceolate, nearly glabrous, 
about half as long as the tube, valvate in the bud, incurved, 
apiculate at the apex; stamens 4, glabrous, exserted; style 
minutely puberulous, exserted ; stigma sub-capitate. 
Punco ANDONGO.—In meadows with short herbage on the right 
bank of the river Cuanza near Sansamanda ; fl. and young fr. April 
1857. No. 3242. In sandy pastures with scanty herbage by the road- 
a ae the presidium towards Cambumbe; sparingly in fl. April 1857. 
° 
Nearly allied to 7. radiata (Borreria radiata DC.), it differs by 
smaller flower-heads, only 2 calyx-lobes, etc. 
8. T. lancea Hiern, sp. n. 
A hirsute-scabrid, dichotomous, erect, annual herb, 3 to 9 in. 
high; stem and branches rather slender, often reddish, more or 
less scattered with rather long whitish spreading rigid hairs ; 
middle internodes about equalling the leaves, the upper ones 
shorter; leaves opposite, lance-shaped, sessile, grey-green, 
scattered with hispid whitish hairs above, uni-nerved, 3 to # in. 
long by 3 to 4 in. broad; the midrib depressed on the upper face 
of the leaves, raised and scattered with hispid whitish hairs 
on the lower face; margins cartilaginous, whitish, thickened ; 
stipules adnate to the bases of the leaves, truncate, terminating 
with elongated filiform sete, the uppermost ones basing the 
inflorescence larger, hispid outside, glabrous and shining inside ; 
flowers 3 in. long, sessile, crowded in small ovoid bracteolate 
terminal and subterminal sessile heads, tetramerous ; bracteoles 
