Oraterostigma] lxxxix. scEOPHULAEiACBiE. 761 



9. ORATEROSTIGMA Hochst. ; Benth. <feHk. f. Gen. PI. ii. 954, 

 Dunalia Br. in Salt, Abyss., App. p. Mv (1814) nomen ; non 



H. B. & K. (1818). 



The species which have been added to this genus subsequently 



to Benth. & Hook, f., I.e. (1876) have made the discrimination of 



it from Torenia increasingly difficult ; I have, however, followed 



Dr. Engler in his treatment of them. 



1. C. plantagineum Hochst. in Herb. Schimp. Abyss, i. n. 310 

 {U. i. 1840), and in Flora xxiv. p. 669 (1841). 



Torenia plajitaginea Benth. in DO. Prodr. x. p. 411 (1846). 



HiTiLLA. — Corolla white, with a yellow lip. In sandy swampy 

 pastures and in neglected fields by the road which leads towards- 

 Gambos, tolerably plentiful ; fl. and fr. Jan. and beginning of Feb. 

 1860. No. 5785. Habit primulaceous ; leaves rather fleshy, rigid, 

 thick, rosulate ; petiole bright scarlet ; corolla white, with a yellowish 

 lip and violet-coloured helmet. In sandy-clayey swampy places in 

 short grass and also in neighbouring fields, plentiful ; fl. and young fr, 

 Jan. 1860. No. 5786. A perennial herb, scarcely 2 to 4 in. high,, 

 with the habit of a Streptocarpus ; flowers yellowish blue, very 

 elegant. At LopoUo ; fr. 28 Jan. 1860. Apparently this species. 

 Coll. Caep. 810. 



2. C. crassifolium Engl. Bot. Jahrb. xxiii. p. 500 (1897). 

 PuNGO Andongo. — An annual herb, scarcely 2 in. high ; branchlets 



erect-spreading ; leaves rather fleshy, subglaucescent-green ; corollap 

 from whitish to yellowish ; the upper lip marked with longitudinal 

 purple lines. In exposed moist places among the more elevated 

 gigantic rocks of Santo Antonio in the praesidium ; fl. and fr. Aprii 

 1857. No. 5869. A rather viscid, annual, erect, branched herb, 2 to 

 4 in. high, with the habit of Euphrasia ; leaves opposite ; flowers 

 whitish, rather large, bilabiate, with striped lips. In sandy open 

 pastures between Candumba and Lombe, growing plentifully and 

 occupying broad tracts in dense masses ; likewise abundant between 

 Bumba and the great cataract of the river Cuanza near Condo ; fl. and 

 fr. March 1857. No. 5870. 



HuiLLA. — A suflEruticose herb, scarcely a hand high, usually shorter ; 

 stem ascending, usually purplish, somewhat naked below, with 

 numerous branches above ; leaves rather fleshy and glossy, often 

 bright purple beneath ; corolla hypogynous, bilabiate, white ; the 

 tube exserted ; the upper lip the shorter, subentire, ciliate, purple- 

 streaked beneath ; the lower lip trifid, the middle lobe the greatest,. 

 all three denticulate-fimbriate ; the throat purple-striate ; stamens 4, 

 all fertile, the posterior pair the shorter ; the filaments of the anterior 

 ones inserted at the base of the lobes of the lower lip, bulbous-inflated 

 at the base and bent backwards, then in the middle arched forwards 

 again at an acute angle ; anthers sub-cohering in pairs, 2-celled, the 

 cells divaricate ; style simple ; stigma bi-lamellate. In damp pastures 

 at an elevation of 5400 ft., and in sunny wooded places by streams 

 near LopoUo, plentiful ; fl. and fr. Jan. 1860. No. 5790. Flowers 

 whitish, turning somewhat yellow. In swampy open woods close to 

 the river Monino ; fl. and fr. Dec. 1859 and Jan. 1860. No. 5791- 

 Almost the entire plant deep red, except the whitish flowers. In 

 elevated spongy parts of Morro de Monino ; fl. and fr. end cf Jan. 

 1860. No. 5792. Towards Nene, intermixed with other species ; fl, 

 and fr. May 1860. No. 5794. 



