Rhinacanthus.'] xcviii. acanthace.e (clarke). l>25 



Engl. & Prantl, Pflanzenfam. iv. 3 B. 330, and in En^l. Pfl. Ost-Afr. 

 C. 371. ^ 



Upper Guinea. Sierra Leone : Scarcies River, Scott-Elliot, 4428 ! and wiih- 

 ont precise locality, Afzelius ! Cameroons : Batanga, Bates, 189! Bipinde, ICOO ft., 

 Zenkei', 1260 ! Victoria, Pretiss, 1219 ! 1384 ! 



M"ile Iiand. British East Africa: 40-60 miles from the Mombasa coast, 

 Johnston! Nyika country near Mombasa, Wakefield! Wanga, Smith! Ukamba, 

 Hildebrandt, 2628! Duruma, Hildebrandt, 2346! 



Ziower Guinea. Gaboon': on the coast, Middleton ,' Gaboon River, Mann, 

 1015 ! Como River, Bates, 458 ! Munda ; Sibange Farm, Biittner, 358 ! Soi/aux, 

 198b ! Angola, Welwitsch, 5010 ! 5191 ! 5204 ! 



IKozamb. I>l8t. German East Africa: Usagara; Mpwapwa, Siuhlmann, 219 ! 

 Usambara ; Duga, Hoist, 3289 ! Masheua, Hoist, 8782 ! and Xyika Steppe, Hoist, 

 3902a ! Portuguese East Africa : base of Morambala Mountain, Kirk ! Sena, 

 Carvalho ! British Central Africa : Nyasaland, Buchanan, 863 ! Shire Highlands, 

 Buchanan, 72 I by the River Ruo, south of Blantyre, Scott-Mliot, 8598! Mount 

 Mlanje, Scott-Elliot, 8655! near Blantyre, Last! Zomba, 3000 ft., Whyte ! and 

 without precise locality, Buchanan, 863 ! Matabeleland ; banks of the River 

 Matengwe, Holuh, 1285 ! 1286 ! 



I am unable to divide this widespread species into two. The leafy-panicled 

 form has rather smaller flowers, and T. Anderson at first tried to make it a separate 

 species. The form with a large panicle destitute of floral leaves {Pseuderanthemum 

 dichotomum, hindavi = JRhinacanthns gracilis, Klotzsch) is the common form in India, 

 the original Justicia Nasuta of Linnaeus. 



2. R. subcaudatuSy C. B. Clarke. Leaves of each pair unequal ; 

 one often only |-J the length of the other, round-ovate. Corolla-tube 

 about J in. long, slender ; posticous lip ovate-oblong. Lower anther- 

 cell with a short white tail. Capsule J in. long, and seeds as of R. com- 

 munis but smaller. 



Upper Guinea. Sierra Leone : near the Scarcies River, at Wallia, Scott- 

 Elliot, 4276 ! and near Sasseni, Scott-Elliot, 4428 ! and without precise locality, 

 Afzelius ! 



" Kondoi (native name), a medicine for indigestion " {Scott-Elliot). 



3. R. rotundifoliuSy C. B. Clarke. Branches 6-angular, pubescent. 

 Lower leaves 2 by Ij in., glabrate, base rounded or subcordate, nerves 

 prominent, finely reticulated on the under surface ; cystoliths many on 

 both surfaces ; petiole ^ in. long. Panicle compound, with many floral 

 leaves {i.e., cymes mainly axillary); flower clusters loose, or cymes 

 J- J in. long, dense. Corolla yellowish-white {Thomas) \ tube \\ in. 

 long. Capsule |-J in. long, pubescent, 4-seeded ; seeds tuberculate, 

 black. 



wile Iiand. British East Africa : Tana River, Thomas, 7 ! 89 ! 

 Closely allied to R. communis, Nees, but diflfers from all forms of that species by 

 the very broad rounded base to the leaves. 



Imperfectly known species. 



4. R. ndorensis, Sckweinf. in Hdhnel, Zum Rudolph-See u. 

 Stephanie-See, Sonderahdr. 7. Small shrub, with the general aspect of 



