Tragia. | CXXII, EUPHORBIACEE (PRAIN). 977 
without lateral lobes, central lobe lanceolate, 34 in. long, } in. wide, lateral narrow- 
lanceolate, 3-1 in. long, under d in. wide, all acute, margin sparingly sharply toothed, 
sometimes pubescent or puberulous above, pubescent on the nerves or sometimes 
generally beneath. Racemes lateral, leaf-opposed. Female sepals with the lateral 
lobules all about as long as the terminal lobule-—Z’. cannabina, Thw. Enum. PI. 
Zeyl. 270; Baill. Etude Gén. Euphorb. 461; Schweinf. Rel. Kotschy. 34, excl. 
the Matamma plant and the figure; hardly of Linn. f. Z. involucrata, var. 
intermedia, Miill. Arg. in DC. Prodr. xv. ii. 944. 7’. involucrata, var. cannabina, 
Hook.f. Fl. Brit. Ind. v. 465, partly. 7’. ¢tripartita, Beille in Bull. Soc. Bot. France, 
lv. Mém. viii. 83, not of Schweinf. 
Upper Guinea. Cameroons: Garua, 1000 ft., Ledermann, 3304! 4573! 
4978! 4991! 
North Central. Bagirmi; on Lake Iro, at Koulfé, Chevalier, 8996! Souka, 
Chevalier, 9056 ! 
Nile Land. Abyssinia: Harar, Riva, 16, Hllenbeck, 1126! Sennar: Fazokl 
Boriani. Dinka: on the White Nile, D’ Arnaud! Sabatier ! 
Mozamb. Distr. German East Africa: Nyika plateau, Sacleuwx, 2102! 
British Central Africa: Nyasaland; at Gombra, above Elephant Marsh, on the 
River Shire, Scott! Blantyre, Buchanan ! 
Also in India and Ceylon. 
Var. brouniana, Prain. Stems dwarf, erect, 4-6 in. high, hispid and beset with 
white stinging hairs. Leaves very shortly petioled, rather firmly chartaceous, all 
very deeply 3-partite, narrow-lanceolate, acute, the central lobe 2 in.long, } in. wide, the 
literal 3 in. long, L-4 in. wide, margin sparingly unequally toothed, almost glabrous 
above, pubescent and bristly beneath. Racemes terminal and occasionally lateral 
leaf-opposed, under 1 in. long. Female calyx-segments with the uppermost pair of 
lateral lobules ascending as large as central lobule and considerably larger than the 
others, which are spreading and are not longer than the width of the rhachis. 
—T. brouniana, Prain in Kew Bulletin, 1909, 51. 
Wile Land. Somaliland: Webi Habir, Keller, 226! Sennar: Sanleil, 
Broun, 775! Kaka Wood Station, Broun, 1593! Kordofan: Kadugli, Wood, 1344 % 
A variable and widely distributed species which has often, but with little justifica- 
tion, been treated asa variety of 7’. involucrata, Linn. The varieties here recognised 
appear, in their extreme forms, very distinct and have at times been regarded as 
Separate species. But the recent communication by Mr. and Mrs. Broun of ample: 
suites of specimens which fully confirm the justice of Cooke’s view that 7’. cannabina, 
Linn. f., is distinct from 7’. involucrata, Linn., has on the other hand not only 
shown that 7’. tripartita, Beille, not of Schweinf, which cannot be kept apart from 
TL. involucrata, var. intermedia, Miill. Arg.,and the still more distinct 7’. brouniana, 
Prain, are only varieties of 7’. cannabina, but has raised a doubt as to whether 
T. Hildebrandtii, sub-sp. glaucescens, Pax, and 7. Hildebrandtii, Mill. Arg., itself 
be more than forms of the same variable species. 7’. involucrata, Linn., which is 
‘pparently an equally variable plant, has not been met with on the African continent ; 
80 far from being conspecific with 7. cannabina, T. involucrata, though a member 
of the same section, belongs to a different natural group of forms. 
12. T. Hildebrandtii, Will. Arg.in Abhandl, Naturw. Ver. Bremen, 
Vil. 26. Stems erect, 2-3 ft. high, from a woody base, sometimes 
themselves firm and woody, } in. thick, copiously virgately branched, 
quite glabrous. ‘Leaves very shortly petioled, ascending, membranous, 
linear-lanceolate, acuminate, base narrow-cuneate, margin entire or 
with a few strong teeth near the base, the lowest tooth on one, less 
VOL, VI.—SECT, I 3R 
