420 cxx. SANTALACE^ (baker AND hill). [Theshim. 



Welwitschii, Baum in Kunene-Samb. Exped. 230, not of Hiern in Cat. 

 Afr. PL Welw. i. 938. 



Iiower Guinea. Angola : by the Kiver Chitanda, on sandy ground between 

 quartz rocks, Baum, 152 ! 



Tliis species has been wrongly attributed to T. Welwitschii, Hiern, from which 

 it differs very markedly. 



17. T. xerophyticum, A. W, Hill in Kew Bulletin, 1910, 342. 

 Subshrub, 1 ft. or more high; stems numerous, more or less erect, 

 stout, grooved, minutely pilose, much-branched ; branches more or less 

 horizontal, stout, grooved, minutely pilose, 1-2 in. long. Leaves 

 numerous, reduced to subulate or broadly ovate acute scales, J-1 lin. 

 long, tips usually brown. Flowers sessile, axillary on the lateral 

 branches; bracts triangular-oyate, acute, | lin, long, minutely pilose ; 

 bracteoles 2, similar to and slightly smaller than the bracts, boat- 

 shaped in both cases with dry brown tips. Perianth ^ lin. long ; lobes 

 J lin. long, ovate, hooded, hairy outside, margins sinuous undulate, 

 unfolded, tips generally brown. Filament i lin. long ; anthers J lin. 

 long. Style minute. Fruits ovoid, about l\ lin. long, 1 lin. broad, 

 minutely pilose and with ten well-marked ribs. 



Iiower Guinea. Gorman South-west Africa: Hererolaud ; Windhoek, 

 Dinfer, 270 ! HofPmung Farm, Dinter, 964. 



18. T. leucanthuxn, Gily in Baum, Kunene-Samh. Exped. 230. 

 Low subshrub ; branches erect, springing from thick root, up to 1 ft. 

 high, very much branched above ; branchlets erect, very smooth with 

 deep longitudinal grooves. Leaves absent or almost absent, reduced to 

 scales, J lin. long. Flowers towards the apices of the branches, dis- 

 posed in 4-() lax or more or less dense spikes, sessile, white, enclosed 

 with few lanceolate acuminate bracts J-1 lin. long at the base. Perianth 

 3J-4 lin. long ; lobes about 2J lin. long, linear or narrowly linear, 

 subacute, hooded, with few hairs on margins. Anthers about \ lin. 

 long, carried up to nearly the top of the segments on long filaments. 

 Style elongate filiform. 



IiO-wer Guinea. Angola : by tlie River Cliitanda, near Kassinga, 4200 ft., 

 scattered on swampy ground, Baum, 218! 



19. T. brachyanthum, Baker in Kew Bulletin, 1910, 182. Stems 

 about 1 ft. long, erect, glabrous, winged towards the base ; branches 

 numerous, slender, erect, deeply sulcate. Leaves reduced to ovate 

 acute scales 1-1 J lin. long, membranous and with stout keel. Flow^ers 

 in long lax terminal spikes ; bracts and bracteoles ovate, acute, 

 1-1| lin. long, membranous, keeled. Perianth about | lin. long; lobes 

 J lin, long, elliptic-ovate, subacute, glabrous. Anthers { lin. long. Style 

 nearly J lin. long. Fruit turbinate, 1 J lin. long, with prominent ribs 

 and transverse reticulations. 



XVIozamb. Slstr. British Central Africa : Nyasalandj Fort Hill, Tanganyika 

 Plateau, Whyte ! 



A distinct species with bare deeply sulcate stems and reduced membranous thickly 



