106 cix. POLYGONACE.E (baker AND wright). [Polygonum. 



Mozamb. Slst. Portuguese East Africa: Lowei- Zambesi; near Lupata, 

 Kirk! ]iritish Ct'iitnil Africa: Nyasalaud ; Shire Highlands, Buchanan, 499! 

 lihodcsia ; (Jwclo, Gardner, '^■^\ 



4. P. axnphibium, Linn. Sp. PI. ed. i. oOl. Perennial. Stem 

 trailing- at tiie base and rooting from the nodes. Leaves in the 

 Abyssinian plant floating, oblong, obtuse, broadly rounded at the base, 

 4 in, long, \\ in. wide, smooth at the margins, long-petioled ; ochreae 

 membranous, truncate, not ciliate. Spikes oblong, dense, 1-2 in. long ; 

 peduncles erect, eglandular ; bracts green, obtuse, not ciliate. Perianth 

 bright red, 2 lin. long. Stamens 5. Styles 2, united half-way up. 

 Nut lenticular, shining, much shorter than the perianth. — Meisn. in 

 DC. Prodr. xiv. 115; A. Rich. Tent. Fl. Abyss, ii. 224; Engl. Hoch- 

 gebirgsfl. Trop. Afr. 202 ; Hook. f. Fl. Brit. Ind. v. 34 ; Engl. Bot. 

 ed. 3, tt. 1241-2 ; Gage in Rec. Bot. Surv. Ind. ii. 423. 



irile Iiand. Eritrea : Saganeiti, Schu'einfurth, 901 ! Zazega, near Asmara, 

 Schiceinfurfh, 2102! near Fort Adi-Ugre, Schweinfurth, 1S7. Abyssinia: Btge- 

 nieder; in Lake Tana, Schimpe.r,\?ioQ\ Shireli ; mountain-lakes, ScJiimper ! Quariin- 

 Billon 4^ Felif, Rohlfs Sf >Stecker. 



Also at the Cajjc and in the Nortli Temperate Zone of both hemispheres. 



5. P. Buchanani, J)ammer in Engl. PJi. Ost-Afr, C. 170. Stem 

 erect, glabrous. Leaves shortly petioled, ovate or oblong-ovate, much 

 narrowed to the base, 4-5 in. long, 2 in. broad, glabrous on both 

 surfaces, copiously gland-dotted beneath ; ochreae ciliate with long 

 bristles. Spikes lax, cylindrical ; bracts not ciliate. Perianth glan- 

 dular, campanulate, 2 lin. long, 5-lobed rather more than half-way down ; 

 lobes oblong, slightly cucullate at the apex. Stamens 7 ; 3 filaments 

 flattened and ovate at the base, the others filiform. Ovary oblong; 

 style tripartite. Nut trigonous. 



Mozamb. X>lst. liritish Central Africa : Nyasaland ; Shire Highlands, 

 Buchanan, 5oO ! 775 ! Namasi, Cameron, 3 ! 



6. P. strigosum, R. Br. Prodr . 420. Annual. Steni slender, 

 branched, furnished with recurved bristles. Leaves lanceolate, trun- 

 cate at the base, hairy, membranous, distinctly petioled. the lower 

 5-G in. long ; ochrea? not ciliate. Racemes subglobose, 3 lin. long, at 

 the ends of the slender glandular-hispid branches of a lax panicle ; 

 bracts orbicular, not ciliate. Perianth pink, not glandular, 1 lin. long. 

 Stamens 5. Styles 2. Kut lenticular, subglobose, shorter than the 

 perianth. — Meisn. in DC. Prodr. xiv. 134; Benth. Fl. Austral, i v. 208; 

 Hook. f. Fl. Brit. Ind. v. 47 ; Dammerfin Engl. PH. Ost Afr. C. 170. 



^ower Guinea. Upi)cr Congo, ex Dammer, 



Mozamb. Dist. German East Africa : Usa\nbara ; Kwa Mshuza, 4500-5000 

 ft.. Hoi si, i)02G ! 



Also in Natal, Trojiical Asia and Australia. 



