Britton : Pisonia 615 



9. Torrubia floridana (Britton). 



Pisonia floridana Britton ; Small, Fl. SE. U. S. 41 1. 1903. 



Known only from Rock Key, Florida, and readily distin- 

 guished from the other species by its dense pubescence. 



Key to tbe above-mentioned species 



Petioles stout. 



Petioles 3-15 mm. long ; blades 6-9 cm. long. 



Petioles 3-5 mm. long; leaves subcordate. I. T. obtusata. 



Petioles I— 1.5 cm. long; leaves cuneate or narrowed at the base. 



Leaves densely brown-tomentulose beneath. 2. T. rufescens. 



Leaves glabrous on both sides. 3. T. Cokeri. 



Petioles only 1 or 2 mm. long ; blades 4 cm. long or less. 4. T. suborbiculata. 

 Petioles slender. 



Leaves glabrous. 



Leaves rounded at the apex or emarginate. 



Leaves oval or oblong. 5. T. discolor. 



Leaves obovate or oblanceolate. 



Fruit globose-obovoid, little longer than thick ; anthocarp 5-6 mm. 



long. 6. T. longifolia. 



Fruit oblong-obovoid, twice as long as thick ; anthocarp 7-8 mm. 

 long. 7. T. Bracei. 



Leaves pointed, sometimes only bluntly acute. 8. T. inermis. 



Leaves densely pubescent, small. 9. T.Jloridaita. 



