BRITTON: PISONIA 
9. Torrubia floridana (Britton). 
Pisonia floridana Britton ; Small, Fl. SE. U. S. 411. 1903 
Known only from Rock Key, Florida, and readily distin- 
guished from the other species by its dense pubescence 
Key to the above-mentioned species 
Petioles stout. 
Petioles 3-15 mm. long; blades 6-9 cm. long. 
Petioles 3-5 mm, long; leaves subcordate. 1. 7. obtusata. 
Petioles 1-1.5 ng; leaves cuneate or narrowed at the base. 
Leaves densely brown-tomentulose beneath 
: rae Be et 
eaves glabrous on both sid 
es. 
Petioles only 1 or 2 mm, long; blades 4 cm. long or less, 
Petioles slender, 
T. Coker 
4. Tr. LTS, 
Leaves glabrou 
Leaves teem at the apex or emarginate. 
Leaves oval or oblon 5. Z. discolor. 
Leaves obovate or obls an 
i obose- bees: ‘as longer than thick ; ae 5-6 m 
gtfolia. 
Frit Ohare: -obovoid, twice as long as thick; coer Fira 
long. 
Leaves pointed, sometimes only bluntly acute. 8. 7 inerwis, 
Leaves eas pubescent, small. 
9. 7. floridana. 
