liueUia] xciv. acantiiacei;. 80^ 



3. R. bignoniaeflora S. Moore- in Journ. But. 1880, p. 108 ; ('. B. 

 CI., I.e., p. 48. 



JJischistocah/x hiynonHthinis Liiuluu in Engl. Nat. PHanzfnfam. 

 iv. 36., p. 307^(1895). 



Amisriz.— In thickets near Banza do Regulo Quisembo, sparingly ; 

 with the corollas fallen, end of Nov. ISfji^ No. 5126. 



LoANDA.— A glandular-viscid undershrub, 2 to 3 ft. liigli, with 

 white tlowers. In rocky places at Praia de Zamba CJrande, plentiful : 

 fl.andfr. IG.Ian. isr,9. No. 5202. No notes. In fr. No. 5063, ;«(W/?/. 

 Corolla nearly 4 in. long, with an elongated trumpct-sliapetl tube. 

 No. 5130. Suffruticose, the whole plant emitting a goatish smell ; stem 

 beset with whitish hairs : flowers large, white. In thickets near Boa 

 Vista; fr. March 1854. Probably this species. Coi.r.. Caui'. 82'J. 



The following description taken from Welwit.sch'.s MSS. pro- 

 bably belongs to Riiellia hignoniajlora S. IVloore : — 



Loan DA. — An erect, branched undershrub or shrublct, remarkable 

 for its goatisli smell : stems whitish, woody : branches herljaceous, as 

 well as the leaves beset with stalked densely crowded viscid rank-fetid 

 glands ; flowers white, solitary in the axils of the leaves, erect-spread- 

 ing, (luickly withering ; calyx deeply 5-cleft, divided to the base ; the 

 segments e(iual, elongated, linear-lanceolate, erect, beset on the back 

 with glandular hairs, ciliate on the margin with longer glandless hairs ; 

 corolla tubular, somewhat funnel-shaped ; the tube long, shortly pilose 

 outside, glabrous within, cylindrical nearly throughout its whole 

 length, the limb subequally fj-cleft. the lobes during the flowering sub- 

 bilabiately spreading ; stamens 4, didynamous, inserted a little below 

 the corolla-throat, included : filaments cylindrical, somewhat pilose ; 

 anthers linear-oblong, whitish, bifid at the base, attached at the back 

 near the emargination, bilocular ; the cells parallel, muticous ; ovary 

 ovoid-conical, sessile in the centre of the thick white turgid disk, 

 bilocular : the cells 4-ovulate : the ovules ascending, rcniform ; style 

 long, a little exceeding the stamens, filiform ; stigma bifid ; the lobes 

 unequal in length, stigmatose on the inner side. In dry plantations of 

 Eu}>lwrbia, also in hilly bushy places near Boa Vista, plentiful ; fi. from 

 November to March. Distinguished from all other Angolan Acanthaceae 

 by its long tubular flowers, coupled with its rank goatish smell. 



4. R. diversifolia 8. Moore, I.e., p. 198 ; C. B. CI., I.e., p. 48. 

 Mo.^SAMF.DES. — A sufPrutescent herb, 2 to 3 ft. high, clothed with 



white goatisli-fetid glands and hairs : stems numerous : flowers white. 

 On rocks of red sandstone at Boca do Rio Bero, only in a few places ; 

 fl. and fr. July IHf/J. No. 5042. 



Bimbo. — Corolla whitish with a flesh-coloured tube. At the out- 

 skirts of thickets and in dense thickets near Bumbo ; fl. and fr. Oct. 

 18r>9. No. 5033. 



As to whether this species should be referred to the genus Paulo- 

 v'Uhehnia, see Lindau in Engl. Nat. Pflanzenfam. iv. 36 p. 301 (1895). 

 The pollen is globose, nodulose, not prickly. 



9. PETALIDIUM Noes; Benth. t Hook. f. C4en. PI. ii. p. 1081. 



1. P. physaloides S. IMoore in Journ. Bot. 1880, pp. 225, 228,. 

 tab. 212, fig. 2 ; C. B. CI. in ¥\. Trop. AtV. v. p. 89. 



PseAulobarlerm p/iysahiJes Lindaii in Engl. Nat. Pflanzonfam. 

 iv. 36, p. 299 (1895)'. 



