362 CARDUACEAE. 



XIII. Bellidiastra. 



One species. 44. E. B ellidiastrum. 



XIV. DiVERGENTES. 



Stem simple below. 45. E. Wootonii. 



Stem branched at the base. 46. E. divergens. 



XV. Flagellaees. 



Leaves and stem appressed-hairy. 47. E. Aagellaris. 



Leaves and stem densely short-pubescent with spreading hairs. 



Basal leaves oblanceolate, entire, or 3-lobed at the apex ; leaves of the stolons 



linear ; plant gray. 48. E. cinereus. 



Basal leaves obovate-spatulate, entire, or with several lateral lobes or teeth ; 

 leaves of the stolons oblanceolate ; plant greener. 49. E. nudiAorus. 



XVI. Cani. 



Disk of the heads fully i cm. high and about 1.5 cm. wide ; basal leaves spatulate, 

 obtuse. 50. E. argentatus. 



Disk of the heads 7-8 mm. high and about i cm. wide ; basal leaves oblanceolate, 

 mostly acutish. Si. E. canus. 



XVII. Caespitosi. 



Stem erect, about 3 dm. high, usually with several heads ; stem-leaves linear. 



52. E. subcanescens. 

 Stem decumbent at the base, 1-2 dm. high, with 1-3 (seldom more) heads ; 

 stem-leaves oblong. 53. E. caespitosus. 



1. Erigeron minor (Hook.) Rydb. (E. armeriacf alius A. Gray, in part; 

 not Turcz.) In damp places in the mountains from Sask. and B. C. to Colo, 

 and Utah. — Alt. 7000-10,000 ft. — Lake City; Democrat Mountain; George- 

 town ; South Park ; Twin Lakes ; Westcliffe ; Red Mountain road, south of 

 Ouray ; Gunnison ; Palsgrove Cation ; Clear Lake ; Grand River, above Kremm- 

 ling; Grizzly Creek; Pagosa Springs; Buena Vista; Buffalo Pass; near 

 Como; Trappers' Lake. 



2. Eiigeron lonchophyllus Hook. (£. armeriaefolius A. Gray, in part) In 

 wet places in the mountains from Sask. and Mont, to Colo, and Nev. — Alt. 

 8000-9000 ft. — Parlin; Ruxton Park, Pike's Peak; Higho; Table Rock; 

 Gypsum Creek; Buena Vista; Grizzly Creek; Twin Lakes. 



3. Erigeron droebachiensis Muell. {E. acris Droehachiensis Blytf) In 

 dry woods from N. B. and Alaska to Colo. — Breckenridge; Mt. Harvard; 

 Anita Peak. 



4. Erigeron yellowstonensis A. Nels. (£. acris A. Gray, in part; not L.) 

 In the mountains from Mont, to Colo. — Alt. 9000-10,000 ft. — Breckenridge; 

 Chambers' Lake; Beaver Creek. 



5. Erigeron jucundus Greene. (E. acris dcbilis A. Gray; E. debilis Rydb.) 

 In wet places, especially in the mountains, from Hudson Bay and B. C. to 

 Colo, and Utah. — Alt. 8000-11,000 ft. — Massif de I'Arapahoe; Mt. Baldy; 

 headwaters of Clear Creek; Georgetown; Eldora to Baltimore. 



6. Erigeron pinnatisectus (A. Gray) A. Nels. (£. compositus pinnatisectus 

 A. Gray) On the higher peaks of Wyo. and Colo. — Alt. 10,000-13,500 ft. — 

 Hahn's Peak ; Cameron Pass ; Pike's Peak ; near Ironton, San Juan Co. ; 

 Gray's Peak; Mt. Garfield; Mt. Harvard; south, of Ward, Boulder Co.; above 

 Boreas; Bottomless Pit; Bald Mountain; Little Kate Mine, La Plata Movm- 

 tains; near Pagosa Peak; Westcliffe; Devil's Causeway; Beaver Creek. 



