474 Lxix. RUBiACEvE. [Ganthium 



lobes I to \ in. long, lanceolate, produced at the apex into a fili- 

 form puberulous tail, valvate in the bud, reflexed in full flower, 

 somewhat pilose inside ; stamens 5, exserted ; filaments inserted 

 at the throat, alternating with the corolla-lobes, compressed, 

 minutely puberulous, ^ in. long ; anthers linear-oblong, yellowish, 

 glabrous, -^-.y in. long, 2-celled, dehiscing longitudinally ; disk 

 glabrous, fleshy, annular; ovary 2-celled, ovules solitary in the 

 cells ; style far exserted, glabrous, filiform ; stigma calyptriform, 

 subcylindrical, green-yellowish, cleft at the apex ; beriy (the only 

 one seen) didymous, 1| in. in diameter, glabrous. 



HuiLLA. — In elevated thickets in Morro de Humpata, at an elevation 

 of 5200 ft. ; fl. Feb. 1860. No. 5352. 



Nearly related to C. caudatijlorum Hiern. 



4. C. gracile Hiern in Oliv. Fl. Trop.Afr. iii. p. 1.39. 

 LoANDA. — Flowers herbaceous-green, somewhat resembling those of 



an Aralia ; stigma calyptriform. In thickets in company with species 

 of Arduina, occasional in the district : fl. and very young fr. Nov. 1853. 

 No. 3137, Near Museque de Luiz Gomez ; after the fall of the corolla, 

 March and April 1854. No. 3139. A robust shrub, with patent 

 branches numerous flowers and usually with didymous fruits. In 

 thickets near Imbondeiro dos Lobos : fr. Feb. 1858. The albumen in 

 the seeds is ruminated. The foliage resembles or approaches that of 

 C. conyense Hiern ; the determination is doubtful. No. 3138. 



Zenz.\ do Goluxgo. — A shrub with ascending branches, coriaceous 

 leaves and whitish flowers. On craggy mountains near Quicanda ; fl. 

 Sept. 1856. This must also be compared with C. congense. No. 3141- 



5. C. glabriflorum Hiern, l.c. 



Island of St. Thomas. — A tree of moderate size. In the more 

 elevated primitive forests ; fl. Dec. 1860. Called by the negroes " Cla- 

 cla." No. 3147. 



K. Schumann in Engl. Pfi. Ost-Afr., C, p. 386, includes under this 

 species C. jiolycarpuni Schweinf., a plant from Niamniam-land, which, 

 however, he cites as C. polijtuithum. 



6. C. Medusula Welw., sp. n. 



A .subscandeut shrub, almost arborescent, or even a small tree ; 

 habit like that of a Coffea ; branches opposite, long, patent- 

 nodding or sarmentose, obtusely quadrangular, glabrate, towards 

 the extremities somewhat compressed ; leaves opjiosite, oval, 

 cuspidate at the apex, rounded or nearly so at the base, thinly 

 coriaceous, glossy, glabrescent except sometimes the midrib and 

 principal veins Ijeneath, ciliate when yoving, deep-green above, 

 paler beneath, 2^ to 4 in. long by 1^ to 2| in. broad; lateral veins 

 5 to 7, clearly marked beneath each side of the midrib ; petiole 

 hispid-pubescent at least at first, on some of the branches bent 

 so as to make the leaves unilateral, about \ in. long ; stipules 

 interpetiolar, broadly ovate, concave, apiculate, | to | in. long, 

 deciduous ; flowers rather exceeding | in. long before expansion, 

 about I in. long when expanded, glabrous outside or very nearly 

 so, numerous, on pedicels of about the same length, aiTanged in 

 oppo.site axillary glabrous subsessile panicles likened to the head 



