CATALOGUE. 153 



than the disk-flowers. — Alpine summits of Colorado (515, 494). Near to 

 JErigeron glandulosum, Porter. 



Erigeron armeri.efolium,* Turcz. (E. lonchophjllum, Hook, in Bot. 

 King's Exped.) — 4-8' high; many stems from a single root; entire plant 

 hispidly pilose; root-leaves narrowly oblanceolate, tapering into long, 

 slender petioles; stem-leaves sessile, linear; inflorescence corymbose or 

 racemose, with a single head terminating a branch; scales of the involucre 

 lax, hardly in two series, acute, and the purple tips often taper-pointed; 

 achenia cylindrical, hairy; pappus with few or no smaller bristles inter- 

 mixed; rays very narrow, longer than the involucre. — Twin Lakes, Colo- 

 rado (527). 



Erigeron Bellidiastrum, Nutt. — Like the following, except "in having 

 a simple and wholly deciduous pappus, and its achenium is tipped with a 

 broad and white epigynous disk." See Gray, in Proc. Amer. Acad. vol. viii, 

 648. — Sierra Blanca, Arizona, at 9,000 feet (811). 



Erigeron divergens, T. & G. (E. Bellidiastrum, Nutt , D. C. Eaton 

 in Bot. King's Exped.) Vid. Gray, I. c. — Camp Grant (383), Arizona, and 

 from the Zuni Villages, New Mexico (169), where it is probably _E. cinereum, 

 Gray, PI. Fendl. From McArthy's Ranch in New Mexico we have (100) 

 a typical _E7. divergens. 



Erigeron flagellare, Gray (PI. Fendl. p. 68). — Perennial, 6-10' 

 high, many slender stems arising from the same root; whole plant strigulose 

 puberulent; lowest leaves spatulate or oblanceolate, narrowed to a petiole; 

 upper leaves linear, sessile, 4-7" long; heads terminating the erect branches, 

 which are naked near the summit; scales of the involucre linear, acute, 

 with scarious margins; ligules slender, very numerous, white or slightly 

 rose-colored; pappus in (both ray- and disk-flowers) two series, the exterior 

 short, squamellate, the interior longer. — A well-marked species, readily recog- 

 nized at sight by its horizontal, flowerless stolons. Apex, Colorado (5 1 8), and 

 Santa Fe Creek (25), whence doubtless it was first taken by Mr. Fendler. 



Erigeron delphinifolium, Willd. (Polyactidium delphinifolium, DC. 

 Prod, v, 281-282.) — Perennial, with many erect, leafy, slender stems 

 from the same root, hispidly pubescent ; lower leaves pinnately parted or 



•See Gray, FJ.Cal. 1, p. 326. 



