46 xcviii. ACANTHACE^ (clarke). [Ruellia. 



wile Xiand. Jur : Gir, Schioeinfurth, 2155 ! Niamniam, Schweinjurth, 3754 ! 

 This species appears very close to H. patula ; the more pointed leaves and the 

 absence of grey pubescence give it a different aspect. 



3. R. siidanica, Lindau in Engl, dh Prantl, PJlanzenf. iv. 8B. 

 310. Petiole 0-J in. long. Bracteoles ligulate, hardly spathulate-elliptic ; 

 otherwise as R. paiula. — Lindau in Engl. Pfl. Ost-Afr. C. 3G8. R. 

 ibbensis, Lindau in Engl. Jahrb. xx. 15, and in Engl. & Prantl, Pflanzenf. 

 iv. 3B. 310. R. patula^ var. suhvillosa^ S. Moore, MS. Diptera- 

 canthus sicdanictis, Schweinf. in Verh. Zool.-Bot. Gesell. Wien, xviii. 

 679, partly. 



true Xiand. Abyssinia (ex Lindau). British East Africa : Ukaraba ; Kitui, 

 Hildtbrandt, 2727 ! 



Mozamb. Slat. Kilimanjaro : River Sigi, Volkens, 63 ! Usambara : Amboni, 

 Hoist, 2921 ! 



4. R. leucoderma, Lindau in Engl. Jahrh. xxiv. 318. Branches 

 white, with many patent simple and gland-tipped hairs. Leaves up to 

 IJ by J in., oblong, subobtuse, hispid, sessile. Braeteoles \ in. long, 

 linear- oblong. Sepals \ in. long, nearly free, linear, green, hairy. 

 Corolla J in. long. Ovary glabrous, except at tip. 



irile Iiand. Somaliland : Abdalla, Keller, 217 I 



5. R. placoidea. Rendle in Journ. Bot. 1896, 414. Very small 

 herb. Leaves subsessile, ovate, J— | in. long, with round scales bearing 

 tufts of bristles on both faces. Calyx scarcely J in. long, divided half- 

 way down into 5 subequal teeth. Corolla f in. long. 



xrile ]Land. Somaliland : Darro Mountains, Donaldson Smith ! 



6. R. prostrata, T. Anders, in Journ. Linn. Soc. vii. 24. Leaves 

 up to 3 by 1\ in., elliptic-lanceolate, tip narrow-triangular often 

 subacute. Calyx- teeth J-| in. long, setaceous. Pollen larger than 

 in R. patula^ much more deeply honeycombed. Ovary hairy down to 

 the base. Capsule f in. long, pubescent all over (till very ripe), other- 

 wise as i?. patula. — C. B. Clarke in Hook. f. Fl. Brit. Ind. iv. 411; 

 Lindau in Engl. & Prantl, Pflanzenf. iv. 3B. 310, and in Engl. Pfl. 

 Ost-Afr. C. 368. R. bignoniceflora, S. Moore in Journ. Bot. 1880, 198, 

 partly. Dipteracanthus prostratus, l^ees in Wall. PI. As. Bar. iii. 81, 

 and in DC. Prod. xi. 124. 



»rile Iiand, Abyssinia. Steudner, 1506! Somaliland: Goetton, Miss E. CoU! 

 British East Africa : Taita, Hildebrandt, 2426 ! 



liO-wer Guinea. Angola: Amhriz, 3Ionteiro Loanda, Welioitsch, 506Z "pArtly \ 



IVIozaxnb. Slst> Portuguese East Africa : Lower Zambesi ; between Sena and 

 Lupata, Kirk I at the foot of Morambala Mountain, Kirk! Lower Shire Valley, Kirk! 

 British Central Africa : Tanganyika Plateau, Carson! Nyasaland: Zomba, Whyte cfj 

 McClounie ! Mount Sochi, Scott-Elliot, 8548 ! Shire Highlands, Buchanan, 133 ! and 

 without precise locality, Buchanan, 320 ! 



The plant is here called R. prostrata, T. Anders., as it is certainly his plant ; B. 

 prostrata, Lam., is described with small calyx, and was therefore probably It. paiula, 

 as Beddome takes it. 



