46 cxxiiic. HORACES (Rendle). [Dorstenia, 



the middle, li-2i in. long, f-lj in. wide, glabrous but veins sparsely 

 puberulous on the lower face ; lateral nerves 3-4 on each side, curving 

 upwards and uniting within the margin; petioles J in. or less in 

 length. Stipules linear-subulate, persistent, 2-5 lin. long. Inflores- 

 cences few, solitary in the upper leaf-axils ; stalk about 2 lin. long ; 

 receptacle narrowly elliptic, J-| in. long, . puberulous on the back, 

 the very narrow margin bearing numerous rather fleshy triangular 

 deep purple bracts about 1 lin. long, the two terminal bracts 

 slightly larger, somewhat cuneate and denticulate at the apex. 

 Male flowers with a 3-lobed perianth ; female few, as in D. tayloriana. 

 — Engl. Monogr. Morac. Afr. 18, t. i. A, iii. A. 



Upper Guinea. Cameroons : near Buea, about 5000 ft., Preuss, 852 ; 

 Cameroon Mountains, 8000 ft., Mami, 1956 ! 



Var. rohustior, Rendle in Journ. Bot. 1915, 300. A larger stronger growing 

 plant with stouter leaves, 2^-4 in. long, 1-1^ in. wide, narrowing to a shortly 

 acuminate apex and below to a cuneate base ; lateral nerves 4-5 on each 

 side ; petioles |-1 in. long ; fruit spheroidal, 1^ Un. in diam., endocarp smooth. 



Upper Guinea. Southern Nigeria : Oban, Talbot, 2316 ! 



38. D. dionga, Engl, in Engl. Jahrh. xxviii. 377. Stem erect, 

 about IJ ft. high and J in. thick, like the petioles densely strigose. 

 Leaves elliptic, wedge-shaped in the lower third then grossly and 

 irregularly toothed, 6-7 in. long, 4J-4| in. wide, teeth to | in. long 

 and 5 lin. broad, glabrous, green, paler on the lower face ; lateral 

 nerves 6-8 on each side, spreading, with the secondary nerves and 

 veins somewhat prominent on the lower face ; petioles about f in. 

 long. Stipules minute, subulate. Inflorescences generally in pairs, 

 sparsely pilose like the boat-shaped receptacle; stalk 2J lin. long ; 

 receptacle 3-4 lin. long, 1-1 J lin. broad and 2J lin. high, with two 

 very concave oblong bracts at each end turned upwards and down- 

 wards, about IJ lin. long and J lin. broad, and short broadly 

 triangular lateral bracts J lin. long. Female flowers few in the 

 median plane of the receptacle ; style 2 -fid. 



Mozamb. Distr. Grerman East Africa : South Uluguru ; in forest, 4000- 

 6000 ft., Goetze, 177. 



39. D. paucidentata, Rendle in Journ. Bot. 1915, 300. Plant 

 1-2 ft. high ; stem herbaceous above, glabrous ; upper internodes 

 f-1 in. long, f-1 lin. thick. Leaves membranous, elliptic, apex 

 shortly acuminate, base cuneate, obtuse, 4-8 in. long, 1^3 in. wide, 

 glabrous, dull green above when dry, brighter green and paler beneath ; 

 lateral nerves 11-13 on each side, somewhat ascending,' curving up- 

 wards and uniting within the margin, impressed on the upper face, 

 somewhat prominent beneath; petiole somewhat slender, ^-f in. long. 

 Stipules subulate, 2 lin. long, falling before the leaf. Inflorescences 

 solitary in the upper leaf-axils, glabrous ; stalk slender, shorter than 



