48 cxxiiic. HORACES (Kendle). [Dorstenia. 



2-lobulate. Male flowers 2-3-androus ; female with 2-fid style. — 

 De Wnd. PL Thonner. Congol. ii. 299. 



South Central. Belgian Congo : Mongala ; Mongende, near Dundusana, at 

 1500 ft., Thonner, 177 ! 



42. D. angusta, Engl, in Engl. Jahrh. li. 430. Stems herbaceous, 

 about 20 in. high, densely hairy, as are also the petioles. Leaves thinly 

 membranous, elliptic, apex shortly acuminate, narrowed at the 

 base, entire or slightly undulate, about 4 in. long, \\ in. wide, glabrous; 

 midrib thick ; lateral nerves about 8 on each side, curving upwards 

 to unite within the margin, coarsely reticulate between the nerves ; 

 petiole 7 lin. long. Stipules small, subulate. Inflorescences in twos 

 or threes in thp upper leaf-axils ; stalk 2J lin. long ; receptacle 

 narrowly elliptic, 6 lin. long by 2 lin. wide, with a setulose bract 

 from each end 7 lin. long. Male flowers 3-4-androus ; perianth 

 3-4-lobed ; female flowers distributed throughout the disc ; style 

 2-fid. Endocarp crustaceous, smooth. 



Upper Guinea. Cameroons : Eduduma-Bidue, about 15 miles east of 

 Batanga, Mildbraed, 6110. 



43. D. Buchanani, Engl, in Engl. Jahrh. xx. 142. Stem erect, 

 flexuous, succulent, a foot long, bearing minute whitish hairs, as do 

 the petioles and (when young) the leaves, especially on the back 

 and nerves. Leaves probably succulent, elliptic, apex and base 

 acute, margin obscurely sinuate-dentate, 2-4 in. long, |-1 J in. wide ; 

 lateral nerves 8-12 on each side, spreading-ascending ; petiole varying 

 much in length from barely 2 up to 9 lin. long. Stipules small, linear- 

 subulate, barely 1 lin. long, deciduous. Inflorescence solitary in the 

 leaf-axils ; stalk attached somewhat below the middle, generally 

 J-J in. long ; receptacle narrowly oblong, about | in. long, by J in. 

 broad with a crenate margin and at each end a linear bract-arm 

 originating below the margin, the upper 2 in. long, the lower narrower 

 and much shorter. Male flowers 2-androus ; perianth with two 

 blunt rounded lobes ; female distributed throughout the disc ; 

 style projecting and dividing into two long crimson arms. Endocarp 

 angularly subglobose, with a dorsal crest and minutely tuberculate 

 sides. — Engl. Monogr. Morac. Afr. 23, t. viii., fig. B. 



Mozamb. Distr. German East Africa : Mpwapwa, Kirk ! British Central 

 Africa : Nyasaland, Buchanan, 505 ! 



Var. longipedu7iculata, Rendle in Journ. Bot. 1915, 300. Apparently a 

 smaller plant, about 6 in. high, with peduncles 2 in. or more in length ; 

 receptacle about ^ in. long ; upper bract-arm 2-3 in. long, lower ^bout 1 in. 



Mozamb. Distr. Portuguese East Africa : near Lake Nyasa, Johnson, 494 ! 



44. D. unicaudata, Engl, in Engl. Jahrh. li. 432. A herb with 

 fleshy smooth branches which are leafless below. Leaves thin, 

 elliptic, acute, abruptly narrowing at the base or decurrent into a 



