314 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Ranoe: Washington to Montana and Colorado. 



Specimens examined: Mount Rainier, Allen, August 20, 1895. 



6. Sazifraga mertensiana Bong. Mem. Acad. St. Petersb. VI. 2: 141. 1832. 

 Saxifraga htterantha Hook. Fl. Bor. Am. 1 : 252. 1833. 



Type locality: "Sitcha," Alaska. 



Range: Alaska to Idaho and the Blue Mountains; north California. 



Specimens examined: Clallam County, Elmer 2643; Chehalis County, Lamh 1348; Cas- 

 cade Mountains, latitude 49°, Lyall in 1859; Mount Rainier, ^ZZen 17; Goat Mountains, 

 Alien 241; Falcon Valley, Suksdotf 14; rocks of the Columbia, Nuttall; Blue Mountains, 

 Homer; Cape Disappointment, Scolder. 



Zonal distribltion: Canadian. 



Small a coasiders that two species have been confused under the above, which he dis- 

 tinguishes as Ileierisia mertensiana and //. eastuxxxliae, the former with bulblets in the 

 inflorescence, the latter without. Both occur in Washington, and careful field study is 

 needed to determine if the character relied upon is really specific. 



7. Saxifraga odontophylla sp. nov. 



Perennial by stout rootstocks, not bulbous, entirely glabrous up to the inflorescence; 

 leaves all basal, reniform-orbicular, somewhat fleshy, coarsely and evenly dentate with 15 

 to 25 teeth, 2 to 8 cm. broad; petioles usually 2 to 3 times as long as the blade; scapes 

 10 to 40 cm. high; inflorescence a loose, erect panicle, glandular; bracts linear, the lower 

 more or less dentate or occasionally foliaceous ; pedicels slender; calyx 5-parted, the lobes 

 oval, obtuse, 2 mm. long, reflexed in anthesis; petals white, orbicular and unguiculate, 

 longer than the calyx; filaments .spatulate, acuminate; ovary free; capsules usually purple, 

 somewhat inflated, 7 to 8 mm. long, cleft to the middle, the l)eaks becoming divaricate. 



This species has long passed in American herbaria as S. punctata L. , a rare European species. 

 Among American species it can only Im) confused with S. nehoniana Don, which is a smaller 

 plant with lol)ed rather than dentate leaves, pubescent stems and inflorescence, elliptical 

 undawed petals, and a more or less condensed flower cluster. S. odontophylla ranges 

 from British Columbia to New Mexico and California. 



Specimens examined: Olympic Mountains, Piper 2213; Ehner 2639; Mount Rainier, 

 Piper 2025; Flett 236, 278; Cascade Mountains, latitude 49°, Lyall; Cascade Mountains 

 above Stampede Tunnel, //en<ferson in 1892; Mount Adams, Suitst/o// 544; Wenachc Moun- 

 tains, Whiled 255; Silverton, Bouck 72a; Mount Stuart, Sandberg cfc Leiberg 570 (type); 

 Stevens Pass, Sandberg <& Leiberg, August, 1893; Blue Mountains, Piper, July 17, 1896; 

 above Lake Chelan, Wilcox in 1883; without locality, Vasey in 1889. 



Zonal distribution: Arctic and Hudsonian. 



The type is in the National Herbarium, sheet no. 289646. 



8. Saxifraga nelsoniana D. Don, Trans. Linn. Soc. 13: 355. 1822. 



Saxifraga punctata nelsoniana Engler, Verb. Zool. Bot. Ges. Vienna 19: 548. 1869. 



Type localffy: Cape Newnham, Alaska. 



Range: Alaska to Washington. 



Specimens examined: Olympic Mountains, Piper 2214; Elmer 2640; Mount Rainier, 

 Allen\&; Piper 2040; Smii!^, August, 1890; Cascade Mountains, latitude 49°, Z,?/aZ/ in 1859; 

 Stevens Pass, Piper, July 7, 1895; Horseshoe Basin, Lake <& Hull, August 24, 1892; Bridge 

 Creek, Elmer 716. 



The Lyall specimen is peculiar and is referred here with doubt. It has the leaves doubly 

 dentate, scarcely cordate, pubescent on each side, perhaps viscid. It may be referable per- 

 haps to (S. mertensiana. 



Zonal distribution: Arctic. 



oN.Am.Fl. 22^:156. 1905. 



