1902] Fernald, — The Chilian Empetrum in New England 147 



In some respects it approaches Brotnus laevipes Shear, but is not 

 closely related to that species. 



Elymus aristatus sp. nov. A rather stout, somewhat glaucous, 

 glabrous, tufted erect perennial about 9 dm. high, with flat leaves ; 

 strict erect purplish spikes, subulate empty glumes and awned flow- 

 ering glumes. Sheaths shorter than the internodes ; ligule firm, 

 membranous, about 2 mm. long; leaf-blades 1 to 2 dm. long, about 8 

 mm. wide, glabrous beneath, striate and somewhat scabrous above. 

 Spikes rather densely flowered, 10 to 14 cm. long, about 5 mm. in 

 diameter, the common rachis scabrous on the margins. Spikelets 

 two or three at each node, 2- to 8-flowered ; empty glumes sub- 

 ulate, 0.5 mm. broad at the base, about 12 mm. long, scabrous; 

 flowering glumes lanceolate, 6 to S mm. long excluding the awns, 

 sparingly but rather strongly scabrous, tapering into a stout straight 

 scabrous awn which is from 3 to 5 mm. in length. 



Type specimen No. 2712. W. C. Cusick, in large clumps, Silver 

 Creek, Harney Co., Oregon, July 31, 1901. 



A species closely related to Elymus triticoide-s Buckl., which it 

 resembles in habit of growth, although not at all stoloniferous, but 

 from which it is distinguished by its much longer empty glumes and 

 long-awned scabrous flowering glumes. In the type of Elymus tri- 

 ticoides in the herbarium of the Philadelphia Academy of Natural 

 Sciences the empty glumes are from 6 to 8 mm. long and the flower- 

 ing glumes nearly or quite glabrous, acute, or bearing an awn about 

 1 mm. in length. 



THE CHILIAN EMPETRUM IN NEW ENGLAND. 



M. E. Fernald. 



In August. 1894. Mr. Clarence H. Knowlton and the writer found 

 on the ledges not far above timber line on Saddleback Mt. at the 

 head of the Sandy River, Maine, a luxuriant Crowberry with large 

 juicy reddish or plum-colored fruit. The berries were much larger 

 than the black fruits with which the writer had been familiar on the 

 eastern coast of Maine ; and this difference was further emphasized 

 later in the day when at the "pinnacle" of Saddleback (alt. 4450 ft.) 

 the ordinary Empetrum nigrum with coal-black fruit was found. But 

 the matter was given little more attention at the time, although Mr. 

 Knowlton soon after reported the form with plum-colored fruit from 

 the slopes of a lower Mt. Saddleback (2200 ft.) in Perkins Planta- 



