946 cxxii. EUPHORBiACEiE (prain). [I^iciniis. 



lin. wide ; anthers yellow. Female: Calyx 4-5 lin. wide; styles 

 usually brightly coloured. Capsule subglobose, ellipsoid or oblong, 

 smooth or prickly, 7-\'2 lin. long, 7-10 lin. wide. Seed ovoid-flattened, 

 7-8 lin. long, S-f) lin. wide ; testa finely mottled ; raphe faintly raised ; 

 caruncle conspicuous. — Bot. Mag. t. 2209; MUll, Arg. in DC. Prodr. 

 XV. ii. 1017; Bentl. & Trimen, Med. PI. iv. t. 237; Engl. Hoch- 

 gebirgsfl. Trop. Afr. 284 ; Pax in Engl. Pfl. Ost-Afr. C, 24(1 ; Durand 



6 Schinz, Etudes Fl. Congo, 247; Hiern in Cat. Afr. Pl.Wehv. i. 988; 

 J)e Wild. Etudes Fl. Katanga, 80, Miss. E. Laurent 133, and Xot. PI. 

 Util. Congo, i. 588, G16 ; Th. ct Hel. Durand, Syll. Fl. Congol. 490; 

 De Wild. Com p. de Kasai, Miss. Scient. 331. 



. -. Distuibuted-evcry where tliroughout Troi)ical Africa^ where it is prohjkfely 8: najJve.. 

 It ascends in Ahyssinia to 8000 ft. Jtnd on Kilimanjaro where, according to Volkens, 

 it is undoubtedly wiUl, to 6000ft. It now occurs as n cultivated plant in many 

 races. The leading African forms are as follows : — 



Var. genuina, Miill. Arp. in DC. Prodr. xv. ii. 1019. Fruit subglobose, sibout 



7 liu. wide, densely beset with prickles 3 lin. long; seed 5 lin. long. — R. communis, 

 Linn. Sp. PI. ed. 'i. 1007, mainly. 



Universnlly distributed throughout Tropical Africa. 



Var. africana, Miill. Arg. in DC. Prodr. xv. ii. 1019. Fruit subglobose, about 

 7 lin. wide, sparinjrly beset with prickles Ii lin, long; seed 5 lin. long. — R.africanus, 

 Willd. Sp. PI. iv.565, mainly : Terrace, iii Ann. Istit. Bot. Roma, v. 99. 



Wile Iband. Eritrea: Amfilah, Terracciano. Abyssinia: Ankober, Rot/l, 

 ^2! Hawasli and Maki Rivers, Wellhy ! Somaiiland: without precise locality, 

 lilrs. E. Lort-PhilHps ! Sudan : Khartoum, Kotschy, 250 ! 332 ! Kordof'an : 

 Kotschy, 243 ! 



This form is characteristic of the Mediterranean littoral and the regions 

 immediately adjacent. 



Var. rnegalosperma, Miill. Arg. in DC. Prodr. xv. ii. 1017. Fruit ovoid-globose, 

 narrowed to the apex, 10-12 lin. long, 9-10 lin. wide, rather densely beset with 

 prickles 3 lin. long ; seed 7-8 lin. Ion}?. — R. inegaloftperrnux, Del. Cent. PI. Afr. 

 Caill. 89. R. inacrocarpus, Hort. ex Steud. Xomencl. ed. 2, ii. 459. 



(ieneral in Southern Tropical Africa from Mossanoedcs in Lower Guinea, through 

 Rhodesia to Mozambique. 



Var. henguelensis, Miill. Arg. in Journ. Rot. 1864, 337. Fruit ellipsoid, 

 rounded at tlie apex, 8 lin. long, 7 lin. wide, sparingly beset with prickles 1^ lin. 

 long.— DC. Prodr. xv. ii. 1019. 



Upper Guinea. Northern Nigeria : Nupe ; Jeba, Barter ! 



Iiower Guinea. Spanish Guinea: Bebai, Tessmauti, 463! Benguella ; 

 Mossamedes, WeUvitsch, 307. 



70. CH^TOCARPUS, Thwaites; Benth. et Hook, 

 f. Gen. PI. iii. 323. 



Flowers dioecious, apetalous. Male : Sepals 4-8, strongly imbricate. 

 Stamens 5-20 ; filaments connate below in a column, free above ; anthei-s 

 oblong, dorsifixed ; cells 2, parallel, dehiscing longitudinally. Kudimen- 

 tary ovaryattheapex of thestaminal column, entire or 3-fid. Disk small. 

 Female : Calyx as in the male. Ovary 3-celled ; ovules in each cell soli- 

 tary ; styles distinct, erect and somewhat incurved, 2-partite, the arms 

 papillose-fimbriate within. Disk distinct, 4-1 0-lobed or entire. Capsule 



