74 SOUTH NIGERIAN PLANTS 



Crossandrella Dusenii S. Moore comb. nov. Syn. Pseudo- 

 hlejjharis Dusenii Liudau, Acanthus Dusenii Clarke, Crossandrella 

 laxispicata Clarke. The Uganda plant which served as the type 

 of Clarke's Crossandrella laxispicata is identical in every respect 

 with the plant from the Cameroons. 



Adhatoda Buehholzii S. Moore comb. nov. (Duvemoia Buch- 

 liolzii Lindau). Some of the specimens agree with Lindau's 

 description, which, the species being unrepresented in this 

 country, is all one has to go upon. Clarke's (Flora Trop. Afr. 

 V. 223) reference of D. Buehholzii to Adhatoda maculata Clarke 

 (Justicia maculata T. And.) is obviously a mistake, for, to take 

 only one point, A. maculata has, as Clarke says correctly, lanceo- 

 late bracts, while Lindau describes the bracts of his plant as 

 ovate. Moreover in general appearance the two are quite unlike. 

 The matter has become further confused by Zenker's n. 2229, a 

 plant with large ovate hracteoles, having been distributed as 

 " Duvemoia Buehholzii Lindau," whereas Lindau says his D. 

 Buehholzii has the bracteoles minute (winzig). Furthermore, as 

 if this were not enough, Zenker n. 2755, a plant with large sub- 

 orbicular bracts, has been sent out as ^'■Duvemoia maculata 

 (T. And.) Lindau." 



Specimens named as above show much variety in their foliage 

 and bracts. Some agree perfectly in these respects with Lindau's 

 description ; others have short and broad leaves rotundate at base and 

 short stalks, and from these leaves there may be a passage into sessile 

 sometimes amplexicaul leaves 2 '5-5 cm. in length, the uppermost 

 forming a transition to the oldest bracts. The largest of these latter 

 organs maj' be as much as 2 cm. in breadth, thus greatly exceeding 

 the dimension (7 mm.) given b}' Lindau. But as these variations may 

 occur on one and the same individual, there can be no question of 

 specific divergence here. The plant is thrown into rivers with the 

 object of poisoning fish. 



Afromendoneia iodioides 8. Moore sp. nov. Frutex scandens 

 ramis distanter foliosis pilis f ulvis subsparsim hispidis ; foliis 

 amplis petiolatis late ovatis apice subito cuspidulato-attenuatis ipso 

 obtusis coriaceis supra glabris subtus pr;csertim in nervis sub- 

 sparsim fulvo-hispidis ; floribus in axillis paucis pedicellis bracteolas 

 cu'citer aequantibus insidentibus ; bracteolis cymbiformibus 

 obtusis triente inferiori connatis ut pedicelli dense f ulvo-hirsutis ; 

 cahjcis brevissimi glabri ore undulato ; corollae tubo ex bracteolis 

 vix eminentibus superne gradatim amplificato glabro lobis late 

 obovatis obtusissimis tubo brevioribus ; stamimim superiorum 

 antheris obtusis iuferiorum apice appendice brevi curvato onustis ; 

 disco maxime prominente crassissimo ; ovario subsphaeroideo glabro 

 1-loculo ; stylo piloso ; ovulis binis. 



Oban ; n. 388. 



Leaves 9-12 cm. long, 6*5-9 cm. broad, when dry greyish and 



