Tardavel] LXIX, RUBIACER. 507 
filiform, exceeding the calyx; the heads involucrate with the 
uppermost leaves and their sheathing stipules; calyx 4 in. long; 
the tube glabrous over the most part, small; the limb 4-partite ; 
the segments subulate, j, in. long, ciliate, subequal, corolla 
whitish-violet-coloured, funnel-shaped-cylindrical, glabrous except 
some setz outside the lobes about their tips; the tube j in. long ; 
the throat naked ; the lobes 4, ovate, 4, in. long, valvate in the 
bud, spreading in open flower; stamens 4, exserted ; filaments 
minutely puberulous, longer than the anthers; style exserted, 
minutely puberulous ; stigma subcapitate. 
Puneo ANponGo.—In moist pastures with rather short herbage, 
near Quibinda, abundant ; fl. and young fr. March 1857. No. 3225. 
Muta Lucala ; fl. March 1857. No. 3226. 
9. T. dibrachiata. 
Spermacoce dibrachiata Oliv. in Trans. Linn. Soc. xxix. p. 87, t. 
52 (1873) ; Hiern, i.c., p. 239. Borreria dibrachiata K. Schum. 
in Engl. & Prantl, Nat. Pflanzenfam. iv. 4. p. 144. Pentas 
involucrata Baker in Kew Bull. 1895, p. 66. 
Punco ANnponGo.—An annual, strictly erect herb, with whitish- 
purplish or sometimes rosy flowers. In moist wooded meadows between 
Muta Lucala and Quibinda, in company with species of Scleria, 
abundant ; fl. March 1857. No. 3231. 
10. T. thymoidea Hiern, sp. n. 
A somewhat scabrid grey perennial herb with the habit of 
Thymus, 3 to 6 in, high, much branched near the suffruticose base 
or underground ; rootstock shrubby; stems numerous, cespitose, 
erect or ascending, simple above or nearly so, more or less hispid- 
pubescent with whitish, shaggy or scaly hairs; leaves opposite, 
decussate, linear or nearly so, pointed at the apex, sessile, 
minutely scabrid on both faces, grey or yellowish green, 4 to | in. 
long, uni-nerved, sub-erect except those close to the flower-heads ; 
margins white, cartilaginous, thickened; stipule adnate to the 
bases of the leaves and so sheathing, from the truncate or broad 
top of the sheath terminating in 1 to 3 bristles or subulate 
teeth ; flowers nearly 3 in. long including the exserted style, 
sessile, numerous, crowded in sessile terminal heads; bracts 
foliaceous, forming with the uppermost pairs of leaves a shallow 
involucre to the heads of flowers and a spreading stellate base to 
the heads of fruits; calyx + in. long ; the tube narrower than the 
limb, compressed, obovate, glabrous for the most part; limb 
bipartite; the segments opposite, green, equal, linear-lanceolate, 
ciliate, about 3 in. long ; corolla salver-shaped, violet-purple, 3 in. 
long before expansion, nearly glabrous; lobes ovate, obtuse, 
valvate in the bud, spreading in the open flower; stamens 4, 
glabrous; anthers linear-oblong ; filaments rather longer than 
the anthers, inserted at the throat of the corolla between the 
lobes ; style minutely papillose, filiform, shortly exserted ; stigma 
sub-capitate ; ovary 2-celled; ovules oblong, solitary, attached 
about the middle; capsule obovoid, somewhat compressed, 3 in. 
