PIPER FLORA OF THE STATE OF WASHINGTON. 315 



9. Saxifraga bongardi Presl, Verb. Zool. Bot. Ges. Vienna 19: 528. 1869. 

 Sttxifraga stellaris hrunoniana Bong. Mem. Acad. St. Petersb. VI. 2: 140. 1831, not Saxi- 

 fraga brunnoniana Wall. 



Saxifraga leucanthemifolia hrunoniana Engler, Monog. Sax. 135. 1872. 



Saxifraga notkana Moc; Small, Bull. Torr. Club 23: 368. 1896. 



Type locality: "Sitka." 



Range: Alaska to Oregon in the Cascade Mountains and westward 



Specimens examined: Olympic Mountains, Elmer 2644; Cascade Mountains, latitude 

 49 , LyaU in 1859; Mount Rainier, Piper 2026, 446; Smith, August,' 1889; Allen 49; Goat 

 Mountains, Allen 199; Mount Adams, Suksdorf 542, 363; Klickitat River, Flett 1316; 

 Silverton, Bouck 69; mountains north of Ellensburg, Brandegee 760; Skamania County, 

 Suksdorf 2500; Bridge Creek, £'Zmer 691 ; Horseshoe Hasin, Lake <& Hull 468; Stevens Pass, 

 Sandberg & Leiberg, August, 1893; Nason Creek, Sandherg & Leiberg 657. 



Zonal distribution: Arctic. 



This species is allied to S. stellaris L. and has often been thus referred. 



10. Saxifraga marshallii Greene, Pittonia 1: 159. 1888. 

 Saxifraga occidentalis S. Wats. Proc. Am. Acad. 23: 264. 1888. 



Type locality: "On damp rocky hillsides, Hoopa Valley, Humboldt County, California." 



Range: British Columbia and Alberta to California. 



Specimens examined: Mount Rainier, Piper 2034*; Goat Mountains, Allen 242*; 

 Wenache region, Brandegee 757*; Olympic Mountains, Piper 2212; Elmer 2646; lower 

 Cascade Mountains, Skamania County, Suksdorf 967 ; White Salmon, Suksdorf 269; Goat 

 Mountains, Allen, July 22, 1896; Mount Baker, Flett 857; Cape Horn, Piper 4969. 



Zonal distribution: Arctic and in the Columbia Gap. 



The specimens marked with an asterisk agree with the type of S. occidentalis in having 

 clavate filaments. The remaining specimens are very similar in all other respects but have 

 subulate filaments. Watson included both forms in his original account of the species. 

 If the filament character proves to be a real specific distinction, as may indeed be the case, 

 we shall have two species of remarkable similarity. The form with subulate filaments is 

 allied to S. nivalis L., under which name it has been distributed. The form from the Colum- 

 bia Gap was referred in Hooker's Flora to S. vemalis Willd., and in Suksdorf 's List to S. 

 refexa Hook. 



Besides the above specimens a few others have been examined, evidently closely allied 

 to S. marshallii, but which we hesitate to refer there, namely: Wenache Mountains, 

 Whited 1040; Admiralty Head, Oscar Piper; Blue Mountains, Piper, July, 1896. 



The whole group is in need of critical revision, a 



a In the recent treatment of Saxifraga by Small in the North American Flora five 

 species are recognized under the generic name Micranthcs in what I have here referred to 

 S. marshallii. The following characters are relied upon to distinguish them: 



Filaments subulate M. rufidula Small. 



Filaments clavate or spatulate. 



Petals bimaculate M. marshallii (Greene). 



Petals wholly white. 



Cymules permanently compact. 



Petals rounded at apex ; species of northern Rocky 



Mountains M. occidentalis (S. Wats.; . 



Petals notched at apex; species of the Northwest. . M. allenii Small. 

 Cymules lax and open. 



Petals notched at the apex M. aequidentata Small. " 



The value of the above characters will have to be determined by careful field study and 

 larger series of material. M. rufidula Small is probably a valid species, and according to 

 the above characters will include all of the specimens above not marked with an asterisk. 

 It may be remarked that this embraces most of the specimens from the bluffs of the 



