1877.] Knoioledrje of the Burmese Flora. lil 



Hab. Frequent on trees in the mangrove swamps of the Andamans. 

 — Fl. Fr. May, June. 



Psychotria, L. 



Conspectus of Species. 



Suhg. 1. Leucopyrenos. Seeds plano-convex without ribs or dorsal keel, enclosed 

 in a white thin memhranous pyrene. 

 Small decumbent under-shrub, the stems and often also the nerves beneath shortly to- 



JT^entose, , P. calocm-pa. 



Subg. 2. Eu-Psychotria. Pyrenes hard, with a more or less distinct dorsal rib, or 

 ribbed and furrowed. 



* Fyrenes not ribbed and furrowed, but dorsaUy more or less distinctly keeled or 



trigonous. 

 X Pyrenes plane-convex, with an obsolete longitudinal dorsal rib. Al- 

 bumen spuriously ruminate. 



Glabrous ; panicles elongate and raceme-like, P. connata. 



As preceding ; leaves larger ; panicle thyrsoid or corymb-like ; berries obovoid, 



. . P. platyneura. 



X X Pyrenes 3-gonous, the inner face flat, the 2 lateral ones more or 



less concave and meeting in a longitudinal ridge. 



+ Quite glabrous. 



Habit of F. connata ; cymes small, in slightly puberulous peduncled panicles ; calyx 



about a lin. across, obsoletely 5 -toothed ; albumen equable, .... P. symplocifolia, 



+ + Tawny or rusty hairy. Flowers sessile, clustered or in heads. 



Flower-heads very small ; leaves glabrous above p. polyneura. 



Flower-heads rather large, compact ; leaves hirsute on both sides ; albumen equable, 



. . P. Helferiana. 



* * Pyrenes longitudinally ribbed and furrowed {ribs usually 3 — 5.) 



X Flowers clustered or in heads. 

 Leaves opaque ; cyme compact, somewhat tomentose ; bracts subulate ; albumen rumi- 

 nate, s «. P. monticola. 



Leaves glossy ; panicle thyrsoid, glabrous, the branchings whorled ; bracts broadly 



ovate, P. adenophylla, 



X X Flowers pedicelled, in lax cymes or corymbs. 

 + Small erect shrubs. 



X Leaves thick membranous or pergamentaceous, turning more 

 or less brownish in drying, 

 t Drupe 4 — 5 lin. long. 



Glabrous ; cymes rusty -puberulous ; albumen ruminate, P. viridiflora, 



t t Drupe only 2 — 3 lin. long. Albumen ruminate. 

 Cymes rusty puberulous on a peduncle 1 — J in. long ; calyx-teeth distinct, linear ; ber- 

 ries crowned by the calyx-lobes, P. Asiatica. 



Cymes rusty puberulous, almost sessile ; calyx almost truncate ; berries truncate- 

 crowned, P- Andamanica. 



Cymes glabrous ; leaves narrower, P. diveryens. 



X X Leaves thin membranous, remaining green in drying. 



All parts glabrous, P. viridissima. 



+ + Large scandent shrubs. Albumen equable. 



