Psychotria.] LXXV. RUBIACEJE. (J. D. Hooker.) 161 



TRIBE XIII. PSYCHOTRIEJE. 

 75. PSYCHOTRIA, Linn. 



Shrubs or small trees, rarely herbs, erect, rarely climbing or twining. Leaves 

 opposite, very rarely in whorls of 3 or 4 ; stipules intrapetiolar, often connate, 

 solitary or in pairs, with often glandular axillary hairs. Flowers in terminal 

 (rarely axillary) cymes, heads or fascicles, not involucrate (in Indian species), 

 bracteate or not/ Calyx-tube short, limb often deciduous. Corolla-tube 

 straight, short (in Indian species), throat naked or hairy; lobes 5, rarely 4 or 6, 

 valvate in bud. Stamens as many, on the corolla-throat or mouth, filaments 

 short or long ; anthers included or not. Ovary 2-celled ; style short or long, 

 branches 2 ; ovules 1 basal erect in each cell, usually cuneiform. Fruit small, 

 ovoid, globose or oblong, rarely didymous with two 1-seeded plano-convex 

 pyrenes, rarely separating into 2 cocci. Seeds plano-convex, ventrally flat or 

 grooved, testa thin, albumen hard sometimes ruminate ; embryo small, basal, 

 cotyledons broad thin, radicle inferior. DISTRIB. Species about 500, all tropical 

 or subtropical. 



SECT. I. Seeds semi-terete or plano-convex, dorsally sinooth and convex, 

 ventrally flat without any groove ; albumen strongly ruminated. Corolla-tube 

 very short in all but P. platyneura and malayana. (GRUMILEA, Gaertn.} 



* All or lower branches of the cyme? whorled, very rarely (in P. congesta) 

 opposite, in P. Thwaitesii, sometimes capitate (see also 15. P. malayana). 



1. P. stenophylla. Thw. Enurn. 147 (Grumilea) ; glabrous, leaves 

 narrowly linear-lanceolate, stipules broad nearly orbicular obtuse coriaceous 

 concave, cymes peduncled, branches whorled, flowers small capitate. 



CEYLON; at no great elevation, Thwaites. 



Branches compressed, leaf-axils and nodes of cyme glandular and with ferruginous 

 hairs. Leaves green -when dry, coriaceous, 2-6 by -1 in., midrib yellow very pro- 

 minent and grooved on the upper surface, nerves slender; petiole short; stipules 

 deciduous. Cymes with 5 branches in a whorl, each in. long; heads of minute 

 flowers g- in. diam. Calyx-limb sinuate. Corolla-tube very short, throat bearded. 

 Fruit size of a pea, globose, black, smooth. I follow Thwaites in placing this 

 amongst the Grumiliete, having seen no fruit. 



, 2. P. glandulifera, Thw. mss. ; glabrous, leaves elliptic-oblong abruptly 

 acuminate narrowed into the petiole, axillary nerve-glands large and deep, 

 stipules broad very obtuse, cymes very short subsessile ebracteolate 3-chotomous, 

 flowers small crowded. 



CEYLON, Thwaites. 



Branches terete. Leaves 5-7 by l^-2 in., pale green when dry, coriaceous, 

 nerves 9-10 pair, spreading, arched; petiole -1 in.; stipules coriaceous, deciduous. 

 Cymes (young) 1 in. ; branches very stout. Flowers (in young bud only) small, 

 sessile ; calyx-limb hardly toothed. The specimens are very imperfect, and I follow 

 Thwaites in placing it amongst the Grumiliea. 



3. P. Gardner!, Thw. Enum. 147 (Grumilea) ; glabrous, leaves cuneate- 

 obovate the broad end very suddenly contracted into a broad caudate obtuse 

 tip, nerves 14-18 pair, stipules obtuse, cymes peduncled brachiate, branches 

 whorled, flowers capitate. 



CEYLON ; central province, alt. 3-6000 ft., Gardner, &c. 



Branches stout, compressed, smooth. Leaves 4-8 by l^-2 in., coriaceous, pale 

 brownish green when dry, narrowed into the short stout petiole ; nerves spreading, 

 VOL. III. M 



