Rydberg : Rocky Mountain flora 133 



ers pedicellate, and brought together in a somewhat rhomboidal 

 raceme.'' The synonymy of Gray's plant is as follows : 



Solidago glaberrima Martens, Bull. Acad. 

 Brux. 8: 68. 1841 



Solidago missouriensis Nutt. Trans. Am. Phil. Soc. II. 7: 327, in 

 part. 1840. Not S. missouriensis Nutt. 1834. 



Solidago missouriensis A. Gray, Syn. Fl. I 2 : 155. 1884. 



Solidago serotina Hook. Comp. Bot. Mag. I: 97. 1835. Not S. 

 serotina Ait. 1789. 



Solidago glaucophylla sp. nov. 



Perennial, with a branching rootstock ; stems slender, pale, gla- 

 brous up to the sparingly pubescent inflorescence ; leaves glabrous, 

 glaucous, minutely ciliolate on the margins, rather thick, linear- 

 oblanceolate or the upper linear, triple-nerved, 6-10 cm. long, 

 4-10 mm. wide, entire, acute ; inflorescence a round-topped panicle, 

 the branches somewhat recurved-spreading and somewhat secund ; 

 heads about 5 mm. high ; bracts oblong, obtuse, or the outer 

 lance-oblong, acutish ; rays short, 2-2.5 mm - lon g. 0.7-0.8 mm. 

 wide ; achenes slightly strigose-hirsute. 



This species is related to Solidago missouriensis and 5. glaber- 

 rima, but differs from both in the narrow, entire, glaucous leaves 

 and the thicker, oblong and obtuse instead of linear-lanceolate and 

 acute bracts. The type grew on dry plains at an altitude of 

 1000 m. 



Montana : Dry plains near Kalispel, Flathead Valley, July 25, 

 1 90 1, MacDougal 760 (type, in herb. N. Y. Bot. Gard.). 



Wyoming: Buffalo, July 25, 1896, A. Nelson 2501 (?, similar 

 but with narrower inflorescence). 



Solidago nivea sp. nov. 



Perennial, with a woody cespitose rootstock and short caudex; 

 stems 1-2 dm. high, decumbent at the base, canescent-puberulent; 

 basal leaves 2-4 cm. long, short-petioled ; blades obovate-spatu- 

 late, rounded at the apex, entire or nearly so ; stem-leaves 

 oblanceolate, sessile, the upper acutish ; all leaves thick, densely 

 canescent-puberulent, almost velvety and almost white ; inflores- 

 cence a flat-topped corymbiform panicle ; heads slightly nodding 

 at first, but not secund on the branches, about 6 mm. high ; 



