66 MINNESOTA STUDIES IN PLANT SCIENCE 



Ovary free; carpels united to the middle and surrounded by a deep, 

 thick, convoluted gland. Follicles pyriform, inflated below, strongly con- 

 tracted above into slender, divergent beaks. Filaments clavate. Sepals at 

 length reflexed. Seeds fusiform, faintly striate to smooth, slightly winged 

 by the loose seed-coat. Hairs, multiseriate (Plates II, XII). 



Monotypic, comprising the following species : 



Saxifraga Mertensiana Bong., Mem. Acad. St. Petersb. VI:2:141. 

 1832. 



Saxifraga heterantha Hook., Fl. Bor. Am. 1 :252. 1832, 



Steiranisia heterantha Raf ., Fl. Tell. 2 :69. 1836. 



Heterisia Mertensiana (Bong.) Small, I.e. 



Heterisia Eastwoodiae Small, I.e. 



Distribution. — From Sonoma County, California, the Blue Mountains of south- 

 eastern Oregon, and the Bitter Root Mountains of Idaho and Montana to the region 

 of Yakutat Bay, Alaska. 



Specimens examined : 



Alaska: Sitka, June 17, 1899, Wm. Trelease, No. 4063 (MBG 83987); Sitka, 

 June 17, 1899, Wm. Trelease, No. 4063 (MBG 83988) ; Port Wells, Prince William 

 Sound, June 26, 1899, Wm. Trelease, No. 4064 (MBG 83989) ; at the base of Mount 

 Tebenkoflf, Yakutat Bay, June 22, 1892, Frederick Fimston, No. 41 (MBG 83990). 



British Columbia: stream sides, Prairie Hills, alt. 5,400 ft., July 26, 1907, But- 

 ters and Holway 235 (UMH) ; Avalanche Crest, Glacier, alt. 6,200 ft., July 28, 1907, 

 Butters and Holway, No. 235 (UMH^ ; wet ledges above Cougar Valley, alt. 5,600 ft., 

 July 18, 1908, Butters and Holway (UMH) ; along banks of streams, Cowichan 

 Alberni Trail, Vancouver Island, alt. 2,600 ft., June 26, 1906, C. O. Rosendahl (UMH) ; 

 Cameron River Valley, Vancouver Island, June 28, 1907, C. O. Rosendahl, No. 1991 

 (UMH and MBG 84054) ; alpine meadow in the Big Bend district, about 118° 20* W. 

 long. 51° 45' N. lat, alt. 7,500 ft, July 26, 1905, H. Shaw, No. 1016 (MBG 83919). 



Washington : north fork of Bridge Creek, Okanogan County, on moist mossy 

 flanks of cliffs, September, 1897, A. D. E. Elmer, No. 716 (UMH) ; Snoqualmie, June 

 4, 1889, E. C. Smith (MBG 83918) ; clefts of rocks, Goat Mountains, alt 5,500 ft, 

 August 12, 1896, 0. D. Allen, No. 241 (MBG 83926) ; Olympic Mountains, Qallam 

 County, July, 1900, A. D. E. Elmer, No. 2643 (UMH, MBG 83929) ; mossy rocks at 

 Quiniault Falls, June 21, 1902, H. S. Canard, No. 390 (UMH) ; Baldy Peak, Chehalis 

 County, alt 3,500 ft., July 21, 1897, H. Lamb, No. 1348 (MBG 83927). 



Idaho: ledges, Kootenai County, June, 1892, /. B. Leiberg, No. 467 (UMH); 

 divide between St. Joseph and Qearwater River, alt. 1,600 m. July 9, 1895, /. B. Lei- 

 berg, No. 1206 (MBG 84081) ; Palouse County and about Lake Coeur d'Alene during 

 June and July, 1892, and May, 1892, /. H. Sandberg (UMH) ; Nez Perces County, 

 moist hillsides, May, 1892, NSS, No. 3170 (UMH, MBG 83930, 83924); mountain 

 slopes, Kootenai County, July, 1887, /. H. Sandberg (UMH). 



Oregon: 1871, Hall, No. 152 (MBG 84225) ; 1871, Hall, No. 152 (MBG 83921) ; 

 wet rocks on the Wallowa Mountains, September 1, 1899, W. C. Cusick, No. 2327 

 (UMH, MBG 83925) ; Bingham Springs, western- slope of the Blue Mountains, alt. 

 766 m., June 12, 1908, and 3321, wet granite cliffs, Wallowa Mountains, alt 3,000 m. 

 August 17, 1908, W. C. Cusick, No. 3330, (MBG 84049) (both on same sheet) ; 



