Oxygonum.| CIX. POLYGONACEX (BAKER AND WRIGHT). 101 
long; anthers blue. Fruit obovoid, 9-ridged, obscurely puberulous ; 
ridges connected by close, less prominent transverse ones. 
Mozamb. Dist. Portuguese East Africa: Morebane Chara, 2500 ft., Johnson, 
247! Rhodesia: Mashonaland; between Salisbury and Headlands, Hon. Mrs. Evelyn 
Cecil, 155! at Umtali, Hon. Mrs. Evelyn Cecil, 2354! between Umtali and Salisbury, 
Hon. Mrs, Evelyn Cecil, 44! 
This species is allied to the South African O. dregeanum, Meisn., which has a 
perfectly glabrous stem and usually broader leaves. 
o. O. atriplicifolium, Martelli, Fl. Bogos. 69. Stems slender, 
diffuse, ascending, finely pubescent along one side. ‘Leaves deltoid to 
lanceolate, acute, entire or slightly lobed, abruptly cuneate at the base, 
puberulous, 10 lin. long, 6 lin. wide; petiole 3 lin. long; ochree 3 lin. 
long, pubescent, setze as long as the tube. Racemes lax, usually about 
6 in. long, slender; bracts similar to the ochres, 2—3-flowered. Peri- 
anth 14 lin. long, pale pink; lobes ovate. Fruiting-perianth 3 lin. 
long, conical at the base and apex, with a spreading spine from each 
of the three angles below the middle.—Ceratogonon atriplicifolium, 
Meisn. in Wall. Pl. As. Rar. iii. 63. Ceratogonum atriplicifolium, 
Meisn. in DC. Prodr. xiv. 39. Polygonum atriplicifolium, Wall. Cat. 
1719. P. Oweni, Bojer in Ann. Sc. Nat. 2™ sér. iv. 267, t. 9. 
Nile Land. British East Africa: Mombasa, Blackburn ! north of Mombasa, 
Whyte ! 
Mozamb. Dist. Portuguese East Africa: Mozambique, Forbes! 
Var. sinuatum, Baker. More robust than the type. Leaves thicker, more or 
less deeply pinnately lobed.—O. sinuatum, Dammer in Engl. & Prantl, Pflanzenfam. 
11. 1A, 30; Hiern in Cat. Afr. Pl. Welw. i. 903. O. cordofanum, Dammer, l.c. ; 
Hiern, l.c. 902. Ceratogonum sinuatum, Hochst, & Steud. ex A. Rich. Tent. Fl. 
Abyss. ii. 231; Meisn. in DC. Prodr. xiv. 40; Aschers. in Schweinf. Beitr. FI. 
Aethiop. 170. C. cordofanum, Meisn. l.c. 39. C. atriplicifolium, A. Rich. Tent. 
Fl. Abyss. ii. 231; Oliv. in Trans. Linn. Soc. xxix. 141. Polygonum No. 2, Speke, 
Nile, Append. 645. Raphanopsis sp., Welw. Apont. 547. Diplopyramis ethiopica, 
Welw. lc. 591; J. Britt, in Journ, Bot, 1895, 75. 
Nile Land. Nubia: Hor T'amanib, Lord! Eritrea: Keren, Beccari, 151! 
Galata, Schweinfurth & Riva, 1619! Abyssinia: near Gennia, Schimper, 264! 
Somak Efat, Ruth! and without precise locality, Quartin-Dillon & Petit, 86! 
Schimper, 197! Parkyns! Sowaliland, Mrs. Lort Phillips! Drake Brockman, 
413! Kordofan, Kotschy, 941117! Pfund, 364! 607! British East Africa: 
near Nairobi, Whyte! Galunka, Kaessner, 840! 
Lower Guinea. Angola: Pungo Andongo; from Ambaca to the Presidium, 
Welwitsch, 1756! Ambaca: near Ngombe, Welwitsch, 1756B! Huilla; near 
Lopollo, Welwitsch, 1758! 
Mozamb. Dist. Germin East Africa: Kilimanjaro, 6000 ft., Johnston ! 
Mamba, Volkens,901! Karagwe, Speke & Grant, 437! 
The characters by which Meisner (l.c.) separated atriplicifolium, cordofanum, 
and sinuatum are not satisfactory, as the length and density of the raceme and the 
relative length of the sete and the tubular part of the ochrea vary in each species. 
6. O. elongatum, Dammer in Engl. Pf. Ost-Afr. C. 170. Stems 
ascending, striate, pilose; ochree membranous, cylindrical, pubescent, 
