134 Rydberg : Rocky Mountain flora 



bracts yellowish with a greenish midrib, lanceolate and acute ; 

 achenes hirsute-strigose ; ligules 3 mm. long and nearly i mm. 

 wide. 



This is closely related to Solidago nana, but differs in the 

 narrower, lanceolate, and acute bracts. Its pubescence is usually 

 also denser and whiter. Piatt's specimens were labeled 6". niis- 

 souriensis v. inontana Gray, to which it has no relationship, only 

 resembling it a little in habit and in the narrow bracts. 



Montana: Lima, Aug., 1905, Rydbevg 280^ (type, in herb. 

 N. Y, Bot. Gard.); Hot Sulphur Springs, July 24, 1871, IV. B. 

 Piatt. 



Solidago Garrettii sp. nov. 



Perennial, with a creeping rootstock ; stem 2—3 dm. high, 

 sparingly puberulent or glabrous ; leaves obovate-spatulate or the 

 upper oval, entire or the lower toothed towards the apex, rather 

 thin, triple-nerved, minutely and sparingly scabrous-puberulent or 

 nearly glabrate, scabrous-ciliolate on the margins, 3—6 cm. long ; 

 inflorescence more or less leafy, with a {cw secund branches ; 

 heads 5-6 mm. high ; bracts lanceolate, acute, yellowish ; ligules 

 2 mm. long and fully 0.5 mm. wide, golden yellow; achenes 

 sparingly hirsute. 



This species is related to Solidago mollis, S. radidina, and .S". 

 Radula. It differs from the first in the thinner, green, more decid- 

 edly obovate, and sparingly pubescent leaves, and the open, few- 

 branched panicle ; from 5. radtUina in the larger, thinner leaves, 

 the open and more leafy inflorescence, and the acute instead of 

 obtuse bracts ; and from 6". Radula in the thin, broad leaves, large, 

 ample upper stem-leaves, the small inflorescence, and acute bracts. 



Utah : Big Cottonwood Cafion, Aug. 28, 1906, A. 0. Garrett 

 20^1 (type, in herb. N. Y. Bot. Gard.) ; same locality and col- 

 lector, Aug. 14, 1905, 1608, and Aug. 5, 1905, ijSj. 



Wyoming: Headwaters of Cliff Creek, Aug. 9-18, 1900, 

 C. C. Curtis. 



Aster Richardsonii Sprengel, Syst. 3: 528. 1826 



Aster montanus Richards. App. Frankl. Journ. 749. 1823. Not 



A. montanus Nuttall. 18 18. 

 Aster salsuginosus Less. Linnaea 6: 124. 183 i. Not A. salsu- 



ginosus Richards. 182^. 



