52 cxxinc. HORACES (Rendle). [Dorstenia. 



subulate, subpersistent. Inflorescence solitary ; stalk about J in. 

 long ; receptacle narrowly elongate-triangular, becoming almost 

 linear above the middle, keeled, finely pilose on the stalk and keel, 

 about IJ in. long, produced above into a slender awn 1^ in. long, 

 base shortly produced beyond the stalk, mucronate. Male flowers 

 2-androus, apparently sometimes 1-androus ; perianth broadly 

 2-lobed, lobes obscurely toothed ; female flowers few in the median 

 line in the lower half, absent from the narrower linear-tapering 

 upper portion ; style projecting from the tubular perianth, 2-fid.— 

 Engl. Monogr. Morac. Afr. 20 and in Schlechter, Westafr. Kautsch.- 

 Exped. 286 ; Th. & Hel. Durand, Syll. Fl. Congol. 503. D. psilurus, 

 Welw., var scahra, Bureau in DC. Prodr. xvii. 273. 



Upper Guinea. Southern Nigeria : Nun River, Barter, 2089 ! 



South Central. Belgian Congo : Coquilhatville, Schlechter, 12607. 



Var. subintegrifolia, Rendle. A plant apparently of laxer growth with 

 longer stalked, narrowly elhptic to obovately eUiptic leaves narrowing to the 

 base, up to 7 in. long and 2 J in. wide, with petioles up to If in. long. 

 Receptacle 11-2^ in. long ; stalk §-| in. long ; apical bract slender, up to 3 1 in. 

 long, the prominent basal portion produced into a bract h in. long. — D. 

 psilurus, var. subintegrifolia, De Wild. Etudes Fl. Bas- et Moyen-Congo, iii. 

 (34. D. scahra, var. longicaudata, Engl, in Engl. Jahrb. li. 431. 



Upper Guinea. Cameroons : Bipinde, Zenker, 1526 ! 4492 ! 



North Central. French Congo : Infondo, on the River Ubangi, Bavdon, 

 976! 



South Central. Belgian Congo : Mogandjo, Laurent, 1999 ! 



50. D. tenuifolia, Etigl. in Schlechter, Westafr. Kautsch.-Exped. 

 286 {name only), and in Engl. Jahrb. xxxiii. 116. A herb about 

 10 in. high ; stem covered with short hairs, more densely so in the 

 upper part ; internodes numerous, short, barely J in. long. Leaves 

 membranous, oblong-lanceolate, apex obtuse, base acute, about 

 3 in. long, 1 in. wide, upper face sparsely pilose, pale beneath and 

 glabrous except on the midrib ; lateral nerves 6-7 on each side, 

 slender, spreading, uniting near the margin ; petiole 5 lin. long. 

 Receptacle resembling that of D. scahra, about | in. long, barely 

 J in. wide above the base ; apical bract somewhat shorter than, 

 or as long as the receptacle ; basal bract barely J in. long ; peduncle 

 about I in. long. Male flower not known ; fruit about 1 lin. in 

 diam. ; endocarp minutely warted. 



Upper Guinea. Cameroons : between Mafura and Mundame at about 1000 ft., 

 Schlechter, 12920. 



51. D. Stolzii, Engl, in Engl. Jahrh. li. 432. A strong-growing 

 erect herb, with pale rhizome and shoots 12-16 in. long, 2J-3 lin. 

 thick, smooth, shining and violet below, densely leaved and densely 

 hairy above with internodes 1J-2J lin. long. Leaves herbaceous, 

 lanceolate or oblong, margin grossly and broadly dentate, 3-4J in. 

 lonf^, Ij-l^ in. wide, upper face sparsely pilose, the lower pilose 



