64 Lxx. RUBiACEiE (hiern). [Oldeidavdia. 



Flowers ^ in. long, pentamerous. Calyx-tube turbinate in flower, 

 campanulate or hemispherical in fruit ; teeth small. Corolla ^ in., 

 white or pale blue. Capsule about g^ in. diameter, membranous, sub- 

 didymous, dehiscing loculicidally at the apex. Seeds angular, very 

 small. — Hedyotis pentandra, Schum. et Thonn. PI. Guin. 71. If. 

 pentamera, Hochst. in Flora 1844, 552. Hedyotis macrophylla, Lepr. 

 et Perr. ex DC. I.e. Pentas ? Thonningii^ Walp. Repert. vi. p. 58, 

 0. pentandra, DC. Prodr. iv. p. 427, non Retz. 0. laxifiora^ Benth. in 

 Hook. Niger Fl. 404. Peutodon decumbe^is, Hochst. in Flora 1844, p. 

 552. P. abyssinicus, Hochst. I.e. P. pentandnis^ Vatke in Oesterr. 

 Bot. Zeitschrift xxv. 231 (1875). Pentas? (sp.) Benth. in Hook. 

 Niger Fl. 402. 



ITpper Guinea. Gambia, Leprieur and Perrottet; Guinea, Thonning ; Nun Rirer, 

 Th. Vogel ! Niger, Barter! Ahh^dkuta,, Barter ! Corsico Island, Mann! Sierra 

 Leone, Afzelius! 



xrile Xiand. Abyssinia, Schimper! White Nile, Petherick! Niamniam-land, 

 Schwdnfurth ! Sennaar, Cienkowsky! 



Iiower Guinea. Congo, Chr. Smith! Loango, Soy'aiix ! 



nCoxamb. Blstr. Kongone Mouth of Zambesi, Kirk! Stewart! Shupanga, 

 Kirk! 55anzibar, Hildebrandt! Sena, Peters. 



Occurs also in Natal, and the Seychelles islands, and Johanna. 



28. O. wauensis, Schweinf. mss. in Eb. sub Hedyotide. Nearly 

 glabrous, toughly herbaceous, about a foot high, branched. Root 

 fibrous, apparently annual. Branches marked with 4 raised lines. 

 Leaves linear or nearly so, usually apiculate, narrowed towards sessile 

 base, ^1 by xg^ ^^- 5 stipules sheathing, multisetose at truncate apex. 

 Flowers pentamerous or occasionally tetramerous, usually in pairs, 

 subsessile, axillary and terminal, scarcely ^ in. long. Calyx-lobes 

 lanceolate, apicnlate or at length obtuse, yV^e ^^' ^'^^S- Corolla 

 scarcely exceeding the calyx. Capsule obconic-oblong, coriaceous, 

 about ^ in. long, indehiscent or tardily dehiscent (loculicidal at the 

 apex). Seeds small, obtusely angular. 



Wile Ijand. Djurland, sandy fields above the Wau River, Schweinfurtk ! 



29. O. liedyotoideSfBoiss.Fl. Orient, iii. p. 11 (1875). A profusely 

 branched nearly glabrous herb, -J-l ft. high. Branches angular, often 

 rooting at the base. Leaves linear-oval, narrowed at lK)th ends, sub- 

 sessile, ^1 by y\-|- in., stipules pluri-setose, shortly sheathing. 

 Flowers tetramerous, -^^ in. long, very shortly pedunculate, clustered a 

 few together in the axils of the leaves. Calyx with 4 lanceolate- 

 subulate lobes and as many (or sometimes fev/er) intervening narrow 

 subulate teeth nearly as long. Corolla hardly exceeding the calyx, 

 4-fid, glabrous inside, white. Stamens and style included. Capsule 

 coriaceous, subglobose, truncate, 4-ribbed, indehiscent. Seeds small, 

 obtusely angular. — Karamyschewia hedyotoides^ Fisch. and Mey. in Bull. 

 Soc. Mosc. 1838, p. 267. ^Theyodis ociodon, A. Rich'. Fl. Abyss, i. p. 

 364. Hedyotis (sp.), Benth. et Hook. f. Gen. Pi. ii. p. 59. O, ra- 

 mosissirna, Hohen. in Hb. Lenkoran. Unio Itin. 18538, non Fischer. 



irile Iiand. Abyssinia, Q. Dilhu ! Nubia, Ehnnherg! Sennayr, Koiu-hy! 



