46 LXX, RUBIACEZ (HIERN). [ Pentas. 
2. PB. occidentalis, Benth. et Hook. f. Gen. Pl. ii. 54. A small 
shrub, 3—4 feet high. Pubescence short, subferruginous. Leaves 
ovate, acute, nearly rounded or narrowed at the base, many- (about 
12-) veined, 14 by 4-2 in. ; petiole ranging up to}in. Cymes rather 
dense, corymbose, 1-3 in. diameter, mostly sessile. Flowers subsessile. 
dimorphous, 2-3? in. long. Calyx }~-4 in. long, lobes all subulate, 
Corolla bearded within the throat; limb 3 in. diameter.—Vignaldia 
occidentalis, Hook. f. in Journ. Linn. Soc. vii. 197. 
Upper Guinea. Cameroons Mountains and Ferando Po, 7000-8500 feet alt., 
Mann ! 
3. P. carnea, Benth. in Bot. Mag. t. 4086 (1844). An erect or 
decumbent perennial, almost or quite shrubby below, 1-2 feet high, 
shortly and rather harshly puberulous, pallid. Leaves ovate elliptical 
or lanceolate-obiong, acute or subacute at the apex, narrowed at the 
base into the short petiole, 1-6 by 3-2 in.; lateral veins numerous 
(12-18). Cymes dense or rarely rather lax, 1-3 in. diameter, sessile 
or pedunculate. Flowers subsessile, pale purple, 2-1 in. long, dimor- 
phic. Calyx }4 in. long or more. Corolla densely hairy at the 
throat ; limb 3-4 in. diameter.—Bot. Reg. xxx. t. 32 (1844). Sipanea 
carnea, Hort. ex Hook. in Bot. Mag. l.c. Musseenda luteola, Hochst. in 
Hb. Schimp. Abyss. iii. n. 1917, DC. Prodr. iv. p. 371, syn. sub n. 9 
(1830), non Del. Ophiorrhiza lanceolata, Forsk! Fl. Adgypt.-Arab. 
p- 42 n. 39 (1775); Manettia lanceolata Vahl, Symb. i. 12 (1790); 
Neurocarpea lanceolata, Br. ! in Salt Abyss. App. (iv.) p. Ixiv. (1814); 
Vignaldia Quartiniana, A. Rich. Fl. Abyss. 1. 357; P. Quartiniana, 
Oliv. in Trans. Linn. Soc. Lond. xxix. p. 82, t. 46 (1873); Penta- 
nisia nervosa, P. cymosa, and P. suffruticosa, Klotzsch in Peters Mos- 
samb. pp. 287-288, i.e. Pentas Klotzschii, Vatke in Oesterr. Bot. 
Zeitschrift xxv. p. 231 (1875). 
Wile Band. Abyssinia, Quartin Dillon, Schimper! Ploawden! Salt, Pearce! Par- 
kyns /; rocks at Madi and Ukidi, Speke and Grant! ; Somali-land, Hildebrandt ! (var. 
with decumbent woody branches, small leaves, slender corolla-tubes, limb } in. diam.) 
Lower Guinea. Angola, Walp. Repert. vi. p. 57 (1846-7). 
Mozamb. Distr. Kilima-Njaro, Rev. C. New! (a poor specimen with flowers 
1} in. long, apparently referable to this species); Zanzibar Island, Hildebrandt! 
1124 (an undershrub, a metre high, with purple flowers, very like some forms of 
P. purpurea). 
Occurs also in the Comoro Islands, and among the mountains of Arabia. 
4. P. purpurea, Oliv. in Trans. Linn. Soc. Lond. xxix. p. 83 
(1873). An erect perennial, 1-3 feet high somewhat shrubby at the 
base with wiry deeply set rootstock. Stem branches and leaves more 
or less pubescent or somewhat hispid. Leaves lanceolate ovate oF 
narrowly elliptical, acute at the apex, attenuated or sometimes obtuse 
or rounded subsessile or shortly petiolate at the base ; 1-44 by 4-14 in. 
Cymes dense subglobose or hemispherical, 1-2 in. diameter mostly 
sessile. Flowers subsessile, purple or lilac, 8-4 in. long, dimorphic. 
Calyx hairy or nearly glabrous, $-} (or in fruit 3 or more) in. long. 
Corolla pilose at the throat ; limb }-} in. diameter. Filaments of the 
