12 ARKIV FOR BOTANIK. BAND 13. NIO 15. 



Conspectus specierum lmjiis subsectionis. 



I. Calathidia omnia plane sessilia. - Species cubenses. 

 A. Folia subtus glabra, puberula aut laxe villosa, haud 

 tomentosa. 



1. Squamae involucri omnes erectae, appresso-imbri- 

 catae. 



a. Folia subtus glabra aut puberula. 



a. Involucrum campanulatum. Calathidia 20 

 25-flora. Folia glabra. 



f Folia elliptica, breviter acutata, membra- 

 nacea, plana, tenuiter reticulato-venosa. 

 Pappus sordide brunnescens. 



V. Sagrceana DC. 



ff Folia late lanceolata, acuta, coriacea, sub- 



bullata, vix reticulata. Pappus stramineus. 



V. Valenzuelana A. Rich. 

 (3. Involucrum cylindricum. Calathidia 811- 

 flora. 



f Folia subtus glabra, valde rugosa. Invo- 

 lucrum 6 mm altum. Squamae acutissima?, 

 interiores apice colore purpureo tinctae. 



V. purptirata Gleason. 



ff Folia subtus puberula, plana. Involucrum 



8 9 mm altum. Squamse obtusse, brevis- 



sime apiculata?, interiores apice pallide brun- 



neae. V. angusticeps Ekman. 



b. Folia subtus pilis albidis, longis laxe sericeo- 

 -villosa. Squama? dense villosa?, conspicue spi- 

 noso-mucronat83. V. viminalis Gleason. 



2. Squamae involucri saltern exteriores squarrosae, pa- 

 ten tes recurvatae. 



a. Calathidia 34 47-flora. Involucrum 8- 9 mm 

 altum, sice, ad 15 mm latum. Squamae lan- 

 ceolato-lineares, subulatae. Pappus albus. 



V. aroni folia Gleason. 



b. Calathidia circ. 17-flora. Involucrum 7 mm 

 altum, 8 9 mm latum. Squamae deltoideae, 

 breviter mucronatae. Pappus sordide brunne- 

 scens. V. Wrightii Sch.-Bip. 



