E. L. EKMAN, WEST INDIAN VERNONI^. 37 



•f- Outer scales elongated, subfiliform. — 

 Trinidad. V. Trinitatis. 



■\-\ Outer scales linear-lanceolate, acute. — 

 Windward Islands, Margarita. 



V. arborescens. 

 ß. Scales appressed, imbricated. 



I C^mes flexuose. — Jamaica. 



V. acuminata var. 

 ■J--J- Cymes straight. 



X Inner scales somewhat bluntish, often 

 purplish. — Jamaica, Grand Cayman, 



V. divaricata. 

 X X Inner scales acute, never purplish. — 

 Porto Rico — Leeward Islands. 



V. albicaulis. 

 2. Leaves whitened, or at least densely tomentose 

 beneath. 



a. Pappus brown. 



a. Leaves sericeous beneath. Scales acute. 



■\ Heads 11 — 13-flowered. — Hispaniola — 



Leeward Islands. V. sericea. 



fj Heads 15 — 16-flowered. — Porto Rico — 



Leeward Islands. X V. Gleasonii, 



ß. Leaves tomentose beneath. Scales obtuse. 



— Cuba. V. desiliens. 



b. Pappus white, 

 a. Leaves flat. 



f Leaves loosely tomentose beneath. 



X Cymes many-headed, often elongated. 



* Inner scales often purplish. — Ja- 

 maica, Grand Cayman. 



F. divaricata. 

 ** Inner scales never purplish. — His- 

 paniola V. jruticosa. 

 X X Cymes few-headed, often abbreviated. 



* Leaves acute, only the younger ones 

 whitened beneath. — Cuba. 



F. crassinervia. 

 ** Leaves obtuse, all whitened beneath. 

 — Cuba. F. gnafhalijolia. 



jf Leaves densely tomentose beneath. 



