90 PEOCEEDINGS OF THE AMERICAN ACADEMY 



Var. HIKTELLUS. Hirsutior, imino hispidus pilis patentibus ; Hgulis 

 aureis. Chrysopsis hirtella, DC. Frodr. v. 327? — E. Oregon and 

 Idaho. Douglas ? Cusick, Nevius, Howell. 



-1— -i— Folia palmati- (rarius pinnati-) partita, radicalia, vel 2-3 in 

 caule scapiformi monocephalo, angusta, integerrima. 



E. COMPOSITUS, Pursh. E. pedatus, N'utt. — Subalpine or alpine 

 on the Rocky Mountains, Sierra Nevada to the Arctic regions, and 

 Greenland. 



Var. DiscoiDEUS, Gray, Am. Jour. Sci., ser. 2, xxxiii. 237. 



Var. TRiFiDUS. Foliis parvulis 2-3-fidis, lobis oblongis vel ovatis. — 

 Northern Rocky Mountains. 



Var. PiNNATiSECTUS. Foliis pinnati-partitis in segmenta 7-11 in- 

 tegerrima vel 2-3-fida. — High mountains of Colorado, Hall, Hooker 

 & Gray, Rothrock. 



•»— -f— -f- Folia ex angusto-linearibus ad lanceolata, ima spathulata, 

 omnia integerrima. 



■H- Virides, pube hirsuta parca vel evanida : caules simplices, 2-6 polli- 

 cares e caudice multicipiti, superne nudi, monocephali : ligultE nee 

 numerosissimae nee ansustae. 



= Species alpinae ; pappo simplici ; pube baud glandulosa. 



E. RADiCATUs, Hook. — A still obscure species. 



E. NANUS, Nutt. B. nanus & B. radicatus, Nutt. in Trans, Am. 

 Phil. Soc, 1. c. — High Rocky Mountains. 



E. URSiNUS, Eaton, Bot. King, 148. Aster glacialis, Nutt. 1. c. — 

 High Rocky Mountains, occurs in several forms. 



= = Species alpestris ; pappo exteriori setuloso parum manifesto. 



E. GLANDULOSUS, Portcr, Fl. Colorad. 60. E caudice valido 

 coespitoso 3-5-uncialis, hispidulo-glandulosus, subscaber ; caulibus sca- 

 piformibus rigidiusculis ; foliis radicalibus spathulato-lauceolatis (lin. 2 

 latis poll. 2 longis) ; capitulo raajusculo ; involucri bracteis subinaj- 

 qualibus scabro-glandulosis parum hirsutis ; ligulis violaceis lin. 5 

 longis. — Mountains of Colorado. 



++ ++ Viridula3, vix cinerea?, pube tenui substrigulosa plerumque ad- 

 pressa : ligulae pauciuscuhe (25-30) uec angustie : pappus fere 

 simplex. 



= Caules floridi simplices monocephali, sat validi, superne aphylli, 

 capitulum majusculum superati. 



