36 ar'kiv for botanik. band 13. n:o 15. 



b. Leaves flat, tomentose beneath. Cuba. 



V. gnaphali folia var. angustata. 

 B. Pappus brown. Hispaniola. 



V. sericea subsp. racemosa. 

 II. Leaves broadly lanceolate to rounded. 



A. Inflorescense many -flowered, cymes elongated. 



1. Leaves greenish beneath, glabrous or pubescent. 



a. Pappus brown or tawny, 

 a. Scales bluntish. 



j* Leaves coriaceous. Involucres obconic. 



Jamaica. V. rigida. 

 fl Leaves membranaceous. Involucres cam- 



panulate or cylindric. 

 X Involucres cylindric. Jamaica. 



V. pluvialis. 

 X X Involucres campanulate. 



* Scales not marginated. 



aa. Involucres brown, 5 mm high. 

 Jamaica. V. acuminata. 

 (3(3. Involucres greenish-brown, 4 

 mm high. Jamaica. 



V. expansa. 

 ** Scales marginated. Cuba. 



V. membranacea. 

 (3. Scales acute. 



| Inflorescence contracted, cymes straight. 



Porto Rico Leeward Islands. 



V. albicaulis. 

 f| Inflorescence spreading. 



X Cymes flexuose. Porto Rico. 



V. borinquensis. 

 X X Cymes straight. 



* Heads 11 13-f lowered. Inner 

 scales somewhat bluntish. His- 

 paniola. V. sericea subsp. racemosa. 



** Heads 15 16-f lowered. Inner 

 scales acute. Porto Rico Lee- 

 ward Islands. x I 7 . Gleasonii. 



b. Pappus white. 



a. Scales loose, somewhat spreading, outer ones 

 often slightly recurved. 



