198 Lxx. RUBiACE^ (hiern). [Psychotria. 



two opposite longitudinal ridges decurrent between the upper nodes. 

 Leaves oval-ovate, more or less acuminate, somewhat wedge-shaped at 

 the base, chartaceous, of nearly the same colour on both surfaces, lucid, 

 l2~^2 ^y 4~-^2 i^') niargins somewhat revolute, lateral veins about 

 7-9 pairs, slender, not conspicuous ; petiole y 3— j^ in. ; stipules del- 

 toid, apiculate, undivided, rigid, l-^ in. long. Flowers J-^ in. long, 

 tetramerous, subsessile, crowded, several together, in subsessile terminal 

 clusters ; bracts mostly like the stipules but smaller ; bracteoles minute 

 or obsolete. Calyx-limb scarcely as long as the ovary, 4-toothed. Co- 

 rolla-throat bearded ; lobes not appendaged. Fruit ^ in. long, ovoid, 

 dicoccous ; cocci marked on the back with 3 blunt ridges. Albumen 

 of the seeds uniform ; radicle inferior. 



Upper Guinea. Sierra Leone, Afzelius / G. Don ! ; on .Sugar Loaf Mountain, 

 Barter .' 



Fruit seen in Hb. Smith. 



7. P. cornuta, Hiern. A dwarf glabrous undershrub. Stem 

 simple or but little branched, subterete below, compressed above. Leaves 

 oval often broadly so, shortly acuminate, wedge-shaped at the base, 

 chartaceous, of nearly the same colour on both sides, 2-3 by 3-IJ in., 

 margins narrowly revolute, lateral veins about 6 pairs, slender ; pe- 

 tiole ^J in. ; stipules ovate-acuminate, bifid, ^-^ in. long, sheathing 

 at the base, lobes subulate, lax. Flowers -j^^ in. long, tetramerous, on 

 shorter pedicels, in small divaricately branched oval terminal cymes of 

 ^ in. long ; common peduncle ^-\ in. ; bracts and bracteoles minute or 

 obsolete. Calyx-limb about as long as the ovary and wider than it, 

 very shortly lobed. Corolla-tube cylindrical, straight ; lobes 4, deltoid, 

 very small, furnished at the back each with a spreading linear horn 

 nearly as long as the tube. Stamens included. Style included, with 

 2 very short erect branches. Berries ^ in. long ; albumen of the 

 seeds cartilaginous, uniform. 



Upper Guinea. Fernando Po, Mann ! 



8. P. humilis, Hiern. A dwarf undershrub about 6 in. high. 

 Stems erect, simple, glabrate and subterete below, somewhat com- 

 pressed and hairy above. Leaves oval or somewhat obovate, obtusely 

 pointed or mucronulate, wedge-shaped at the base, scattered with 

 crisped hairs on both sides, rather paler beneath, chartaceous, about 

 lJ-3 by §-1^ in., lateral veins about 6 pairs, not conspicuous ; petiole 

 ^^ in. long, hairy ; stipules fugacious. Flowers very small, glabrous, 

 tetramerous, on short pedicels, about 6 together, in terminal clusters ; 

 common peduncle ^ in. long, glabrous ; bracteoles minute. Calyx-limb 

 short, very shortly lobed. Corolla-tube straight, cylindrical ; lobes 4, 

 very small, deltoid, furnished at the back each with a patent Linear 

 horn nearly as long as the tube. Stamens included. Style glabrous, 

 as long as the corolla-tube ; stigma subcapitate. 



Upper Guinea. 1°N. lat. CoriscoBay, iJ/aww.' 



9. P. bifaria, Hiern. A small shrub, 2 feet high ; branches 

 scarcely woody, somewhat tumid below the nodes, towards the extre- 

 mities bifariously hairy. Leaves elliptical, acuminate, wedge-shaped 



I 



