E. L. EKMAN, WEST INDIAN VERNONT^. 35 



2. Folia subtus sericeo-pubescentia — sericeo-tomentosa. 



a. Folia linearia, margine revoluta (cfr. V. sericece 

 subsp.). Calathidia 18 — 21-flora. Pappus albus, 

 a. Inflorescentia divaricata. Squamae involucri 



submolles. Tubus long. 7« corollse. — Cuba. 

 V. angustissima Wright ap. Ekman. 

 ß. Inflorescentia congesta, angusta. Squamae in- 

 volucri rigidae. Tubus long. Vj corollae. — 

 Hispaniola. V. stenophylla Less. 



b. Folia latiora, vulgo anguste ovato-lanceolata. 

 Calathidia 11 — 16-flora. Pappus saepissime brun- 

 neus. 



a. Calathidia 11 — 13-flora. 



f Folia subtus saepe tenuissime sericea. In- 

 florescentia satis contracta. Squamae in- 

 volucri interiores saepe breviter acutatae. 

 Antherae 1,2 mm longae. — Hispaniola. 

 V. sericea L. C. Rich, subsp. 



racemosa (Delp.). Ekman. 

 ff Folia subtus densius sericeo-tomentosa. 

 Inflorescentia diffusa, cymis elongatis. 

 Squamae involucri interiores acutae. An- 

 therae minimae, 0,8 mm longae. — Porto Rico 

 — Ins. infra ventum. F. sericea L. C. Rich. 

 ß. Calathidia 15 — 16-flora. — Porto Rico — In- 

 sulae infra ventum. ::< V. Gleasonii Ekman. 



Artificial Key to the Species of tlie Siibsect. Arborescentes. 



I. Leaves linear to narrowl}^ linear-lanceolate. 

 A. Pappus white. 



1. Leaves greenish beneath. — Cuba. V. commutata. 



2. Leaves whitened beneath. 



a. Leaves re volute, sericeous beneath, 

 a. Inflorescence spreading. — Cuba. 



V. angustissima. 

 ß. Inflorescence contracted, narrowly oblong. 

 f Leaves 4—7 cm long; heads 18 — 21 -flowe- 

 red. — Hispaniola. F. stenophylla. 

 f f Leaves 1 — 3 cm long; heads 11-flowered. 

 — Cuba. V. coroUaphila. 



