682 CONTEIBUTIONS PROM THE NATIONAL HEEJBARIUM. 



43. Erigeron platyphyllus Greene, Leaflets 1: 145. 1905. 



Type locality: Santa Rita Mountain, New Mexico. Type collected by Metcalfe 

 (no. 1469). 

 Range: Known only from the type locality, in the Transition Zone. 



44. Erigeron rudis Woot. & Standi. Contr. U. S. Nat. Herb. 16: IS4. 1913. 

 Type locality: Wliite Mountains, Lincoln County, New Mexico. Tj-pe collected 



by Wooton (no. 270). 



Range: Mountains of southern New Mexico. 



New Mexico: A\'hite Mountains; Burro Mountains; Mogollon Mountains; Capitan 

 Mountains. Damp ground, in the Transition Zone. 



45. Erigeron s-emirasus Woot. & Standi. Contr. U. S. Nat. Herb. 16: 185. 1913. 

 Type locality: Mogollon Creek, Mogollon Mountains, New Mexico. Tyjje col- 

 lected by Metcalfe (no. 320). 



Range : Mountains of New Mexico. 



New Mexico: Mogollon Mountains; Santa Fe and Las Vegas mountains. Damp 

 woods, in the Transition and Canadian zones. 



46. Erigeron bakeri Woot. & Standi. Contr. U. S. Nat. Herb. 16: 185. 1913. 

 Type locality: Near Chama, New Mexico. Type collected by Baker (no. 678). 

 Range: Northern New Mexico. 



New Mexico: Chama; Dulce. Meadows, in the Transition Zone. 



34. BBACHYACTIS Ledeb. 



Low branched leafy-stemmed annual with alternate entii-e leaves and small race- 

 mose-paniculate heads; iuA^olucres camjDanulate, rather small, of 2 or 3 series of narrow, 

 nearly equal bracts, the outer foliaceous and resembling the leaves, the inner mem- 

 branaceous or scarious; achenes narrow, not compressed, 2 or 3-nerved, pubescent; 

 pappus simple, of capillary bristles; rays very short. 



1. Brachyactis woodliGUSei (Wooton) Woot. & Standi. 

 Aster tvoodhousei Wooton, Bull. Torrey Club 25: 458. 1898. 

 Type locality: Near Zuni, New Mexico. Type collected by Woodhouse. 

 Range: Northwestern New Mexico. 

 New Mexico: Zuni; Albuquerque. 



35. ASTER L. Aster. 



Perennial branched herbs with leafy stems, sessile or petiolate leaves, and 

 corymbose, paniculate, or racemose heads of yellow flowers; rays purple, blue, or 

 white; ray flowers fertile; involucral bracts more or less imbricated, apprcssed or 

 spreading, with green foliaceous tips; receptacle flat, alveolate; achenes more or 

 less flattened ; pappus of capillary bristles in a single series. • 



key to the species. 



Involucres and often the stems glandular. 

 Leaves scabrous or variously pubescent. 



Bracts linear, about equal; plants stout 1. A. novae-angliae. 



Bracts oblong or lanceolate, very unequal; plants 



comparatively slender 2. A. oblongifolins. 



Leaves glabrous, except sometimes on the margins. 



Leaves conspicuously ciliate; stems clustered, very 



numeimis 3. A. fendleri. 



Leaves not ciliate; stems few or solitary. 



Heads large, about 12 mm. wide 4. A. hijdrophitus. 



Heads smaller, less than 10 mm. wide. 



Leaves long, nearly linear, acute; heads few. b. A. pauciflorus. 



