STANDLEY FLORA OF GLACIER PARK. 423 



5. Solidago missonriensis Nutt. Frequent on the east elope at low altitudt s, en 

 dry, brushy or open hillsides. B. C. to Oreg., Colo., and S. Dak.— Stems stout, 15 

 to 40 cm. high, glabrous; lowest leaves oblanceolate, 5 to 10 cm. long, glabrous, 

 entire or slightly toothed; bracts mostly obtuse. 



6. TOWNSENDIA Hook. 



1. Townsendia parryi D. C. Eaton. Occasional on the east slope at low altitudes; 

 on dry hills, shale banks, or prairie. Alta. to Idaho and Wyo. — Biennial. 10 to 20 

 cm. high; stem with appressed hairs, bearing a single head, leafy; leaves at base of 

 stem spatulate, glabrous on the upper surface; head large, the rays 12 to 15 mm. long, 

 purplish pink; pappus of long bristles. 



The plants bloom early in the season. 



7. ASTES, L. Aster. 



Perennials with rootstocks; leaves alternate, toothed or entire; heads few or many, 

 mostly in panicles or corymbs, with purple to Avhite rays; pappus of numercus 

 whitish bristles. 

 Involucres and peduncles with viscid glands. 



Stem leaves ovate or obovate, very rough, coarsely toothed . . 2. A. conspicuus. 

 Stem leaves linear, lanceolate, or oblong, not rough, mostly entire. 

 Leaves lanceolate or oblong, mostly 1 to 3 cm. wide; involucre 1 cm. long. 



3. A. sayianus. 

 Leaves linear or linear-oblong, less than 1 cm. wide; involucre 6 to 7 mm. long. 



4. A. campestris. 

 Involucres and peduncles without glands. 



Bracts hairy (sometimes only minutely hairy) on the back. 

 Bracts not bristle-tipped; rays pink to purple. 



Heads 1.5 cm. high; rays pink; stems glabrous or nearly so. 



1. A. engelmannii. 

 Heads 1 cm. high or less; rays mostly purple; stems hairy. 



Stem leaves oblanceolate or obovate, narrowed at the base; heads 1 or few. 



5. A. meritus. 

 Stem leaves linear or narrowly oblong, clasping; heads numerous. 



6. A. nelsonii. 

 Bracts tipped with a short bristle; rays white. 



Pubescence of the stems of appressed hairs 7. A. polycephalus. 



Pubescence of the stems of loose si^reading hairs. 



Heads about 5 mm. high 8. A. exiguus. 



Heads 6 to 9 mm. high 9. A. crassulus. 



Bracts glabrous on the back, the margins sometimes hairy. 



Plants glabrous throughout 10. A. laevis. 



Plants hairy, at least on the upper part of the stem. 



Outer bracts much shorter than the inner ones, never leaflike. 

 Heads about 1 cm. broad; stem leaves linear-lanceolate. 



11. A. occidentalis. 

 Heads about 1.5 cm. wide; stem leaves lanceolate or oblong. 



12. A. fremontii. 

 Outer bracts mostly as long as the inner ones or longer, often leaflike. 



Heads numerous, 6 to 8 mm. high; outer bracts often reflexed. 



13. A. oreganus. 

 Heads few, 10 mm. high or more; outer bracts not reflexed. 



14. A. frondeus. 



1. Aster engelmannii D. C. Eaton. Pink aster. Frequent, especially en the 

 east slope, at low and middle altitudes, in low thickets or in woods; often found near 

 or just above timber line. B. C. and Wash, to Nev., Colo., and Alta. (Eucephalus 



