Oncostemma.] lxxxv. asclepiade.i: (buowx). 411 



lin.long, lanceolate, acuminate, ciliolate. Corolla about { in. in aiam., 

 campanulate-rotate or subrotate, 5-lobed to three-foui ths of the way- 

 down ; tube ventricose 1-1 J lin. long; lobes elliptic-ovate, obtuse, 

 glabrous, green outside, brownish inside. Ou^er coronal-loljes minute, 

 deltoid, fleshy, united into a ring at the base ; inner corona a thick 

 fleshy ring, about half as long as the I lin. long staniinal-column. — 

 K. Schum. in Engl. Jahrb. xxiii, 2?>i}, and in Engl. A: Prantl. JMhuenfani. 

 iv. ii. '2\)7 ; Henriques in Bolet. Soc. Brot. x. IGT). 



Upper Guinea. Cameroons: \)ca,r Ynundv, Zenker, GGo. 



XiO-wer Guinea. Island of !St. 'J'liouias : near Hatepa, 1750 ft., MoUer, \)\\. 



35. NANOSTELMA, Baill. Hist. PI. x. 247. 



Flowers minute. Corolla subcampanulate, 5-lobed ; lobes narrowly 

 overlapping. Corona annular, thick, obtusely 5-crenate, surrounding 

 the short and thick staminal-column under the anthers. Anthers 

 terminated by an inflexed membi-ane. Style capitate, papillose, with 

 the vertex depressed. Follicles narrowly linear, acute, glabrous. — A 

 perennial glabrous herb, with knotted rhizome and erect stems. 

 Leaves opposite, sessile, lanceolate. Flowers lateral at the uppermost 

 nodes, in long-peduncled lax racemose cymes, and forming a compound 

 terminal raceme. 



An endemic genus of one species, not seen by nie. 



1. N. congolana, Baill. Hist. PI x. 2i8. Name only, nodeMiip- 

 tion beyond the above. — X. congolanum, K. Schum. in Engl. t\: Pr.mti, 

 Piianzeiifam. iv. ii. 248. 



ILower Guinea. Congo. 



36. SPHffiROCODON, Benth. in Benth. et Hook. f. (Jen. 



PI. ii. 772. 



Calyx 5-partite. Corolla campanulate or subcampanulate, O-lobed ; 

 lobes overlapping and slightly twisted to the left in bud. Corona of a 

 small fleshy compressed tubercles or teeth, radiating or ascending 

 from the staminal-column some distance above its base. Staminal- 

 column arising from the base of the corolla ; anthers erect, obtuse, 

 without appendages. Pollen-masses erect, solitary in each anther-cell, 

 not very minute, united in pairs by very slender caudicles to the minute 

 and rather thin pollen-carrier. Style shorter than the anthers, trun- 

 cate and shortly 5-rayed ab the apex. — Perennial herbs with a woody 

 or tuberous ro'otstock. Stems erect, not twining. Leaves opposite, 

 shortly petiolate, elliptic or oblong. Flowers of moderate size, in 

 pedunculate sublateral umbel-like cymes. 



Species 2, one of which is also found in Natal. 



Tliis genus differs from Tylophora in its dwarf er erect habit, unJ)nnulud in- 

 florescence \\\l\i numerous bracts, compressed coronal-lobes nnd much larger mid 

 iKore oblong pollen-masses. 



