802 



CXXH. EUPHORBIACEiE (hUTCBINSON). 



\Cluytia. 



1. C. benguelensis. 



2. C. monticola. 



3. C. Stuhlmanni. 



C. stelleroides. 

 C. iniiangensis. 



6. C. conferta. 



broad. — Shrubs or undershrubs, rarely climbers. Leaves alternate, 

 entire, mostly small (especially in the South African species). Flowers 

 small, the males pedicellate in axillary fascicles, the females often solitary 

 and with longer pedicels. 



Species about 57, mostly South African, a few occurring in Arabia. 



Stems sim])le or snbsimple, arising from a woody many- 

 lieaded rhizome. 

 Leaves glabrous. 



Male pedicel 1 lin. long or less, pubescent 

 Male pedicel 3-6 lin. long, glabrous. 



Leaves suborbicular or broadly elliptic, rounded 

 at the biise, densely pustulate below ; male pedi- 

 cel -J- in. long ...... 



Leaves oblanceolate or obovate-clliptic, narrowed 

 to the biise, usually about ^ in. broad, not 

 pustulate below ; male pedicel about ^ in. long 

 Leaves narrowly oblanceolate, about ^ in. brond, 

 pustulate below, with recurved carlibiginous 

 margins ; male pedicel about \ in. long . 

 Leaves rather densely ad])rc6sed-pilose 

 Stems more or less branched, not from a rhizome ; shrubs 

 or climbers. 

 Leaves crowded and overlapi)ing, subsessile, ratlier 



deeply emarginiite ; flowers monoecious 

 Leaves usually more or less laxly arranged, not or very 

 slightly emar<;iiiate. 

 Flowers monoecious; leaves narrowly lanceolate 

 Flowers dioecious. 



Male petals with a solitary gland within the base 

 of each. 

 Leaves more or h'ss ovate, rounded at the base 

 Leaves never ovate, mostly narrowed to the base, 

 or if somewhat rounded then oblong or 

 oblong-elliptic. 

 Male pedicel very slender, about 3 lin. long, 

 glabrous or nearly so. 

 Branches yellowish- or greyish-tomentel- 



lous ; female pedicel almost capillary 

 Branches glabrous or nearly so ; female 

 pedicel stouter . 

 Male pedicel stouter, 1^ lin. long or less, 

 glabrous or haii-y. 

 Leaves petiolate, membranous . 

 Leaves subsessile, subchartaceous 

 ^lale petals with 2 or more glands within the base 

 of each. 

 Stems climbing (always?); latei'al nerves of 

 the leaves invisible or nearly so. 

 Ovary tomentose . . . . . 13. C volubilis. 



Ovary glabrous . . . . . . 14. C. gracilis. 



Stems never climbing; lateral nerves of the 

 leaves usually distinct. 

 Leaves small, usually less thtin 1 in. long . 15. C. Paxii. 

 Leaves usually more thnn 2 in. long. 



