150 BOTANY. 



Aster adscendens, Lindl. — Twin Lakes, Colorado, at 10,000 feet, 

 (.022); also from Utah. Var. ciliatifolius, T. & G., stems with many linear 

 leaves (1-3' long and 1-3" wide), somewhat filiate; scales of the involucre 

 ciliate, acutish ; upper part of the stems rather hispidly pubescent. — Cotton- 

 wood Creek, Colorado (524). The leaves are in the main narrower and 

 the scales of the involucre less acute than in 252 of Hall and Harbour's 

 collection, with which my 509 more nearly compares. Number 492 of our 

 ( lolorado collection is a slender, almost leafless state, with smaller rays and 

 more acute tips to the involucre than the typical var. ciliaMfolius. 523 ap- 

 proaches A. falcatus } Lindl. Number 525, marked by Dr. Gray as a curious 

 form, is, except for its smooth involucral scales, very much like A. inttfjri- 

 folms, Nutt (No. 6\66 of Bolander's California collection), and so like the 

 description of A. adscendens, var. Parryi, Eaton, that I am constrained to 

 leave it there, and hence will probably be A. adscendens, Lindl. (?) (as con- 

 sidered by Dr. Gray in Fl. Cal. 1, 324) ; from Colorado. A specimen of 

 adscendens, however, collected by me at the Soda Spring, on Kern River, 

 in California, is like 525 in the involucral scales, but with much narrower 

 leaves. Except this one from California and the one from Utah, all my 

 material is from Colorado, at or above 10,000 feet altitude. 



Aster Nuttallii, T. & G. Fl. 2, p. 126 ; var. Fendleri, Torr. (A. 

 Fendleri, Gray, PI. Fendl. p. 66). — In the absence of the plant, I subjoin 

 the following original description of Dr. Gray, entire, from PI. Fendl.: 

 "Span high, with many ascending, rigid, somewhat hispid stems from a 

 subligneous root ; branches monocephalous, corymbose-paniculate ; leaves 

 small, rigid, entire, linear, coriaceous, sessile, mucronulate, smooth and 

 single-nerved, with the margins hispidly ciliate; the lowest subspathulate, 

 and the upper very short; involucre campanulate, scales in 3 series, linear- 

 oblong, glandulose-scabrellate, mucronulate, the exterior herbaceous ones 

 obtuse and lax, the interior a little longer, acute; achenia pubescent." (510.) 



Aster falcatus, Lindl. — Valley of the Upper Arkansas, Colorado, 

 and San Francisco Mountains, Arizona (488, 501). 



A.STEB simplex, Willd. — Nevada. 



V.STER MDLTIFLORU8, L., V8JP. Y. COMMUTATUS, T. & G. — Stem slender, 



unbranched, nearly sessile, 3-4" in diameter; scales of the involucre 



