30 cxxiiic. HORACES (Rendle). {Dorstenia. 



B. Style simple. Plants persisting by means of a tuber 

 or short thick rhizome, sometimes acaulescent or 

 with a thick fleshy stem (section Kosaria). 

 Stem springing from a tuber or short thick rhizome : 

 Receptacle triangular or 4-6-rayed : 



Bract-arms about twice as long as the 



diameter of the disc 9>5. D. Waller i. 



Bract-arms not exceeding the diameter of the 



disc ... ... ••• ••• ••• ... 86. D. cuspid ata. 



Bracts short and blunt, much shorter than the 

 diameter of the disc : 



Bracts 2-5 lin. long 87. D. zanzibarica. 



Bracts not exceeding 1 lin 88. £>. holtziana. 



Receptacle 3 -lobed, with finely denticulate margin 89. D. Preussii. 

 Acaulescent plants with a fleshy tuber : 



Receptacle oblong to linear with terminal and 



lateral bract-arms 90. D. harnimiana. 



Receptacle narrowly triangular with bract-arms 



from apex and base only 91. D. palmata. 



Receptacle orbicular 92. D. ellenbeckiana. 



Stem thick and fleshy : 



Leaves elliptic to obovate, entire 93. D. fcetida. 



Leaves with crisped or toothed margin 94. D. crispa. 



1. D. frutescens, Engl. Monogr. Morac. Afr. 12, t. ii. B. Shrubby 

 with a slender horizontal rhizome 1-1| lin. thick and an erect 

 slender terete, generally simple, stem iJ-3 ft. high, and 1^-2 lin. 

 thick below and 1 lin. in the upper younger portion ; rhizome attached 

 near the base of the stem by a strong tapering branching root, and 

 also bearing fibrous roots. Young shoot shortly and densely pilose, 

 later glabrous. Leaves papery, broadly oblanceolate to obovate, 

 shortly acuminate, tapering to -an acute base, and passing into the 

 petiole, margin entire, 6-10 in. long, 2-2f in. wide, glabrous, shining 

 and dull green above, paler beneath ; lateral nerves 10-13 on each 

 side/ curving slightly upwards and connected by a loose reticulation, 

 depressed on the upper face, prominent beneath ; petiole slender, 

 hairy like the stem, \^ in. long. Stipules conspicuous, linear-taper- 

 ing, glabrous, persistent, 3-6 lin. long. Inflorescence solitary ; 

 stalk 3-5 lin. long ; receptacle turbinate, upper face orbicular to 

 elliptic, slightly 2-lobed, yellowish, 5-6 lin. in diam., reaching 

 10 lin. when ripe, outside brownish-green with a few small scattered 

 bracts on the sides and base and numerous small marginal bracts. 

 Male flowers 2-3-androus ; perianth 3-leaved ; female few ; ovary 

 ovoid ; style long, thin, 2-branched for the greater part of its length. 

 Fruit subglobose, slightly compressed, smooth, 2J-3 lin. thick, 

 completely sunk in the receptacle ; endocarp light brown. — Engl, in 

 Schlechter, Westafr. Kautsch.-Exped. 286. 



Upper Guinea. French Guinea : Louesse, Sibakala, Baudon, 724 ! Cameroons : 

 Barombi, Preuss, 374, 318, 384 ! between Ninga-dorf and Kake, Preuss, 373 ! 

 Johann-Albrechtshcihe, Stavdt, 461 ! Eko-Keyake, 1000-1300 ft., Schlechter, 

 12890 ! 



Lower Guinea. Gaboon : Mfoa, 85 miles east of Gaboon, Bates, 517 ! 



