112 CIX. POLYGONACES (BAKER AND wricHt). [ Polygonum. 
South Central. Congo Free State: Monbuttu; Kibali River, Schweinfurth, 
3549 ! 
Mozamb. Dist. German East Africa: Kilimanjaro, 6000 ft., Johnston ! 
Portuguese East Africa: east side of Lake Nyasa, Johnson, 391! Lower Zambesi ; 
near Expedition Island, Kirk ! Shamo, Kirk! mouth of the Zambesi, Peters / 
British Central Africa: Nyasaland; Umbaka River, Scott! Kondowe to Karonga, 
Whyte, 369! Upper Shire River, Scott-Elliot, 8490 ! 
Also in Egypt, Madagascar and Tropicai Asia. 
17. P. Tanganikee, Schuster in Bull. Herb. Boiss, 2” sér, viii. 709. 
Root fibrous. Stem erect, about 3 ft. high, red, glabrous, thickened at 
the nodes; internodes }-2 in. long. Leaves 4-10 in. long, $—1} in. wide, 
lanceolate, acuminate, tapering downwards, with small sete on the midrib 
and margins and cystoliths in the lamina, otherwise glabrous ; petiole 4-9 
in. long. Racemes 3 or more together, 2-4 in. long, densely flowered ; 
bracts turbinate, not glandular, glabrous; pedicels naked. Perianth 
rose-coloured, glandular; nerves rather firm and straight, parallel, once 
or twice forked. Stamens 8. Style bipartite. Nut enclosed in the 
perianth, 14 lin. long, about 1 lin. wide, compressed with concave faces, 
shining. Cotyledons incumbent. 
Nile Land. Somaliland: Webi Abaallah, Keller. 
Lower Guinea. Congo, Schimper, 48. 
Mozamb. Dist. German East Africa: Lake Tanganyika, near Karema, 
Bohm. 
18. P. acuminatum, //. B. dK. Nov. Gen. et Sp. ii. 178. Stem 
stout, pubescent. Leaves lanceolate, acuminate, pubescent, the upper 
3—4 in. long, the lower up to 1 ft. long; ochre densely ciliate with 
bristles. Spikes dense, cylindrical, 2-3 in. long, 2-4 to a stem; bracts 
ovate, usually ciliate. Perianth pink, not glandular, 1 lin. long; 
segments 4-5, ovate. Stamens included. Style bifid. Nut lenticular, 
black, glossy.—Meisn. in DC. Prodr. xiv. 114 (not in Monogr. 
Polyg. 78), and in Mart. Fl. Bras. v. i. 14, t. 4, fig. 1 (var. Hamboldtit) ; 
Engl. Pfi. Ost-Afr. C. 170; Durand & Schinz, Etudes Fl. Congo, i. 235. 
P. Poiretii, Meisn. in DC. Prodr. xiv. 113; var. latifoliwm, Dammer in 
Engl. lc. P. barbatum, T. Thoms. in Speke, Nile, Append. 645; Oliv. 
in Trans. Linn. Soc. xxix. 142, not of Linn. P. nyikense, Baker in 
Kew Bulletin, 1897, 280. 
Lower Guinea. Angola and French Congo, ex Dammer. 
South Central. Congo Free State: Kingunchi, Buettner, 314, ex Durand f 
Schinz. 
Mozamb. Dist. German East Africa: Usambara; Kwa Mshuza, Holst, 
2028! Kilimanjaro, 6000 ft., Johnston, 90! in moist places in the Coast Range, 
Speke & Grant! British Central Africa: Nyasaland; Nyika Mountains, 4000- 
6000ft., Whyte! Mount Chiradzulu, Whyte ! and without precise locality, Buchanan, 
1265 partly! 
Var. microstemon, Mart. ex Meisn. in Mart. Fl. Bras. v. i. 15, t. 4, fig. 2. 
Leaves linear-lanceolate, long acuminate, about 6 in. long, 4 lin. wide, adpressed 
hairy on both surfaces; ochrez with cilia 3 lin. long. Bracts deciduously ciliate. 
