Rydberg : Rocky Mountain flora 447 



but still there is a plant of Montana, Idaho, and Saskatchewan, 

 related to Tetraneuris acauUs, though differing in so many respects 

 that it would be inconsistent to include it in that species. I 

 therefore propose it as new: 



Tetraneuris septentrionalis sp. nov. 



An acaulescent perennial, with a short, thick cespitose-pulvinate 

 caudex; leaves spatulate or oblanceolate, mostly rounded at the 

 apex, 1.5-4 cm. long, 5-8 mm. wide, canescent-tomentose, sub- 

 velutinous; scape 5-10 dm. high, rather thick, appressed-tomentose; 

 involucres 6-7 mm. high, 12-15 mm- broad, densely villous; bracts 

 elliptic, rounded at the apex; rays 8-10 mm. long, 5-6 mm. wide, 

 very strongly veined; achenes .silky-strigose; pappus scales ovate, 

 abruptly short-aristate. 



This is related to Tetraneuris acaiilis and T. simplex, but differs 

 from both in the broader leaves, the looser pubescence, the usually 

 shorter and stouter scape, and short bristle-tips of the pappus 

 scales; from the former of these also in the less silky pubescence 

 and the larger and more strongly veined rays, and from the latter 

 in the dense pubescence. 



Idaho: Palouse Country, June-July, 1892, G. B. Aiton (type, 

 in herb. N. Y. Bot. Card.). 



Montana: Fort Benton, John Persall gzd; Livingston, June, 

 1899, Tiveedy. 



Saskatchewan: Cypress Hills, June 23, 1894, John Macoun 

 5078. 



Wyoming: Yellowstone Park, June, 1888, C. H. Hall. 



Hymenoxys Macounii (Cockerell) Rydb. comb. nov. 



Hymenoxys Richardsoni, var. Macounii Cockerell, Bull. Torrey 



Club 31: 474. 1904. 



It is not plain whether Professor Cockerell intended this as a 

 variety of H. Richardsoni or of his H. Richardsoni, subsp. 

 pumila. From the discussion, the latter interpretation seems 

 most probable, but technically it seems to have been made a 

 variety of the species. In habit it is most like H. pumila, but 

 it has one character that was overlooked by Professor Cockerell, 

 viz., the outer bracts are much thickened on the back, even sub- 

 carinate. This would associate the plant with H. florihunda 



