314 CONTEIBUTIONS FEOM THE NATIONAL HERBARIUM. 



Range: Washington to Montana and Colorado. 



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



6. Saxifraga mertensiana Bong. Mem. Acad. St. Petersl). VI. 2: 141. 1832. 

 Saxifraga heterantha 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, AV/ner 2643; Chehalis County, Law;?* 1348; Cas- 

 cade Mountains, latitude 49°, Lyall in 1859; Mount Rainier, ^4/?fM 17; Goat Mountains, 

 Allen 241; Falcon Valley, Suksdorf li; rocks of the Columbia, Nuttall; Blue Mountains, 

 Horner; Cape Disappointment, Scouler. 



Zonal distribution: Canadian. 



Small" considers that two species have been confused under the above, which he dis- 

 tinguishes as Heterisia mertensiana and H. eastwoodiae, the former with bulhlets 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, obtu.se, 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 beaks becoming divaricate. 



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

 Among American species it can only be confused with S. nelsoniana Don, which is a smaller 

 plant with lobed rather than dentate leaves, pubescent stems and inflorescence, elliptical 

 unclawed 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; Elmer 2639; Mount Rainier, 

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

 above Stampede Tunnel, Henderson in 1892; Mount Adams, Sulsdorf 544; Wenache Moun- 

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

 Stevens Pass, Sandberg (& Leiberg, August, 1S93; 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 locality : Cape Newnham, Alaska. 



Range: Alaska to Washington. 



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

 Allenm; Piper 2040; Smith, August, 1890; Cascade Mountains, latitude 49°, Z;/a// in 1859; 

 Stevens Pass, Piper, July 7, 1895; Horseshoe Basin, Lake cfc 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. 



aN.Am. Fl. 22': 156. 1905. 



