Eririeron. COMPOSITE. 207 



A. parviflorus, Geat. Glabrous, somewhat riscid, low and slender: leaves narrow, sim- 

 ply pinnatifid, barely inch long; the lobes short-linear, obtu>e, hardh- raueronate: heads 3 

 or 4 lines high: involucre closer; the bracts with short oblong or ovate-lanceolate acute 

 green tips: rays 3 lines long: akenes canesceutlv sericeous. — Bot. Calif, i. 322 note. 

 Maclmrantheraparvhiura, Gray, PL Wright, i. 90. — Xew :Me.xico from the Eio Grande to 

 '\^ . Arizona, Wnijld, Thurber, Slc. 



49. ERiGERON, L. Fleabaxe. ('Hp and -,ipb>v, old man in sprin;r.) 

 — A rather large genus of herlxs or barely suffrutescent plant,, veroing on the 

 one hand to Aster, on the other to Conyza. and only arbitrarily to be separated 

 on the line,s of junction ; the heads dispo&ed to be solitary and "lon.^-pedunculate ; 

 rays (occasionally absent in certain species, uniformly wanting in two or three 

 others) violet, purple, white, rarely ochroleucous (or in anomalous species e\en 

 clear yellow !) ; disk-flowers yellow, not changing to purple : akenes commonly 

 2-nerved. — L. Gen. ed. 2. 400 {Erigerum in ed. 1, after Dodoens. who had 

 Groundsel in view, and this form may explain how the name was taken for 

 neuter by Linnaeus) ; Torr. & Gray. fI. ii. 16G; Benth. & Hook. Gen. ii. 280, 

 e-\cl. § Oritrophiuin (which must belong either to Celmisia or Aster) : Gray, Proc. 

 Am. Acad. xvi. 8(5. Erigeroiu Trimorphma. PJialacrohma, Steiioctis. &c., Cass. 

 Erigeron, Steuactis. Phalacroloma. Poly actid him (Pcjlyactis. Less.;, Hefrroeliceta, 

 & WoodvUlea, DC. Prodr. ( Genera founded on the pappus and number of the 

 rays, mostly unavailable even for good subgenera.) The series here commences 

 with Asteroid and ends in Conyzoid forms. 



§ 1 . EuEEiGEROX. Pays elongated and conspicuous, or in a few species uni- 

 formly wanting, in one or two {E. compositus, E. concinniis) occasionally abor- 

 tive : no rayless female flowers between the proper ray and disk. 



# Perennials, commonly dwarf from a multicipital caudex, alpine or rarely alpestrine, with com- 

 paratively large and mostly solitary heads : invrAucre loose or spreading^ and copiously lanate 

 with long multiseptate hairs: rays about 100, narrow: leaves entire. 



•4— TThole herbage gnaphalioid-lanate : pappus double; the short outer multisquamellate. 

 B. Muirii, Geat. A span high, densely clothed with long and soft white (apparently per- 

 sistent) floccose wool ; stems simple and monocephalons, rather leafy : leaves lanceolate-spat^ 

 ulate (an inch or two long), or uppermost narrowly lanceolate : involucre squarrose, as of 

 the following species: rays white, a third of an inch long. — Proc. Am. Acad. xvii. 210. — 

 Cape Thompson, Alaska, John Muir. 



•^r— -f— Herbage green, with or without villous or hirsute pubescence : pappus nearly simple. 

 »=B. Unifloms, L. Stems an inch to a span or two high, strictly monocephaious, few-leaved, 

 often naked and pedunculLform at summit; radical leaves spatulate or oblanceolate (inch or 

 two long) ; cauline lanceolate to linear : involucre usually hirsute as well' as lanate, occa- 

 sionally becoming naked; the linear acute bracts rather close, or merely the short tips 

 spreading: ravs purple or sometimes white, 2 or 3 or rarely 4 lines long. — PI. Lapp. t. 9, 

 f. 3, & Spec. ii. 864; Hook. PL ii. 17; Torr. & Gray, PL ii." 169; Ledeb. PI. Ross. ii. 490; 

 Eeichenb. Ic. PL Germ. xvi. 914-. E. alpinus & Sieracium pusiUum, Pursh, PI. ii. 5:32. 502. 

 E. pulchellus, var., &, E. alpinus, in part, DC. Prodr. v. 2S7. E. eriocephalus, J. Tahl, PI. Dan. 

 t. 2298, is either this or possibly a form of the next. — Labrador to Arctic coast, and 

 L'nalaska, south to the Sierra Nevada, California, and mountains of Colorado, in the alpine 

 region. Porms with a comparatively hirsute involucre occur in the Pocky JMountains ; and 

 some are not well distinguished from the next. (Greenland, En., X. Asia to Kamts.) 

 E. lanatus, Hook. Stems about a span high from a multicipital caudex, scapiform or few- 

 leaved, monocephaious : radical leaves spatulate to obovate, about half-inch long, tapering into 

 a narrowed base or into a slender margined petiole ; some primary ones occasionally pal- 

 mately 3-lobed ; cauline one or two, small and linear, or hardly any ; head not larger than 



