62 



FLOKA OF JAMAICA 



Pilca 



tfPeduncles (at any rate those of the fruiting 

 cymes) shorter than the petioles. 

 Leaves large, 5-13 cm. 1. Stems not 

 creeping. 

 Cymes paniculate, lax. (Leaves often 



entire) 21. P. reticulata. 



Cymes densely clustered. 



Leaves narrowly elliptical 28. P. sessiliflora. 



Leaves ovate 29. P. impressa. 



Leaves small, 1-2 cm. 1. Stems creeping 30. P. radicans. 

 '*Stem or leaves puberulous, pubescent or pilose. 

 fPeduncles about equal to, or shorter than, 

 the petioles ; leaves small ; stems 

 creeping. 



Leaves round, crenate 31. P. nummularifolia. 



Leaves broadly obovate-spathulate, slightly 



crenate in upper half 32. P. depressa. 



Leaves narrowly elliptical, attenuated 



below, serrate 18. P. ciliata. 



tfPeduncles (at any rate those of the fruiting 

 cymes) longer than the petioles. 

 Stems creeping ; leaves small, roundish to 

 ovate. 

 Leaves with a few obscure teeth, glab- 

 rous beneath 33. P. rotundata. 



Leaves crenate-serrate, pubescent on 

 nerves beneath. 



Leaves elliptical-roundish 34. P.repens. 



Leaves ovate-roundish. 



Male perianth pilose 35. P. troyensis. 



Male perianth glabrous 36. P. Harrisii. 



Stems not creeping. 



Leaves glabrous on both sides, larger 

 3-4 cm. 1. Stem minutely puberu- 

 lous 26. P. brevistipiila. 



Leaves on upper surface glabrous, 

 underneath pilose on nerves. 

 Cymes laxly paniculate, flowers few in 



clusters. Leaves large, 3-6 cm. 1. 37. P. obtusata. 

 Cymes short with dense-flowered 

 clusters at apex of peduncles. 



Leaves small, '9-1 "7 cm. 1 40. P. Hollickii. 



Leaves sparsely pilose on both sides, or 

 glabrous above and minutely puber- 

 ulous on nerves beneath, 1-5-3 



cm. 1. Stem procumbent 38. P. diffusa. 



Leaves sparsely pilose with pellucid 

 hairs on upper surface, and pilose 



on nerves beneath, 1-3 cm. 1 39. P. kmiiifolia. 



Leaves sparsely pilose with pellucid 

 hairs or glabrate on both surfaces, 



3-5 cm. 1 41. P. silvicola. 



Short tomentum (generally reddish) on 

 apices of branches and on nerves on 

 back of leaf ; leaves 1*5-5 '5 cm. 1. 42. P. nigrescens. 



1. P. mierophylla Liehn. in VidensJc. Selsl-. Skr. ser. 5, //. 296 

 (1851); dioecious or moncecious, herbaceous sometimes becoming 



