PIPER FLORA OF THE STATE OF WASHINGTON. 435 



6. Pyxola bracteata Hook. Fl. Bor. Am. 2: 47. 1834. 



. Pijtvla rotundifolia hradeata A. Gray in Brewer & Wats. Bot. Cal. 1 : 460. 1876. 



Type ixjcality: "N. W. Coast." Collected by Scouler. 



Range: British Columbia to Idaho and California. 



Specimens examined: Mount Constitution, Henderson, July 4, 1892; Skokomish River, 

 Henderson, June 15, 1892; Nisqually Valley, Allen 68; Mount Rainier, Piper 2048; Mount 

 Adams, Flett 1213; Falcon Valley, Svksdorf 1546 in part; Fish Lake, Chelan Count}^ 

 ^4. D. Dunn, August 8, 1900; Klickitat River, Henderson, August 4, 1892; Big Meadows, 

 Stevens County, Kreager, August 5, 1902; Blue Mountains, Piper, July 15, 1896; Clallam 

 County, Elmer 2465. 



Zonal distribution: Transition. 



7. Pyrola incamata (DC.) Fisch.; DC. Prod. 7: 773. 1839, as synonym. 

 Pyrold rotundifolia incarnata DC. Prod. 7: 773. 1839. 



Pyrok eZato Nutt. Trans. Am. Phil. Soc. 8: 270. 1843. 



Type locality: "In Dahuria." 



Range: Alaska to New England and Oregon. Asia. 



Specimens examined: Seattle, Piper 2760; San Juan Island, Lyall in 1858; Cascade 

 Mountains, latitude 49°, Lyall in 1859-60; Nason Creek, Sandberg & Leiherg 614; Railroad 

 Creek, Elmer, September, 1897; Twisp River, Whited 219; Skagit Pass, Lalce cfc Hull, 

 August 25, 1892; Falcon Valley, Suksdorf 1546 in part; Blue Mountains, Ijoke <k Huh 565; 

 Yakima Count}', Mrs. Steinweg in 1894; Big Meadow, Stevens County, Kreager, August 6, 

 1902; Davis ranch, Kreager 182. 



Zonal distribution: Transition. 



One of Lyall's specimens, which has been considered to be P. eUiptica Nutt., is probably 

 a form of P. incarnata. We have seen no satisfactory evidence that P. eUiptica occurs 

 west of the Rocky Mountains. 



MONOTROPACEAE. Indian Pipe Family. 



Ovary 4 or 5-celled. 



Corolla wanting; flowers spicate Allotropa. 



Corolla present; flowers solitary or racemose. 



Flowers solitary Monotropa. 



Flowers racemose. 



Corolla poh'petalous, deciduous Hypopitys. 



Corolla gamopetalous, persistent Pterospora. 



Ovary 1-celled. 



Calyx of 4 or 5 lacerate sepals; petals similar Pleuricospora. 



Calyx of 2 entire sepals; corolla tubular Hemitomes. 



ALLOTROPA. 



1. AUotropa virgata Torr. & Gr. Pac. R. Rep. 6^: 80, 81. 1857. 



Type locality: "Cascade Mountains of northern Oregon." Collected by Pickering. 



Range: Washington to California from the Cascades and Sierras to the coast. 



Specimens examined: Seattle, Piper 478; Lake Keechelus, Henderson, July 27, 1892; 

 Lake Wenache, Sandberg cfc Leiberg 631 ; Olympic Mountains, Elmer 2470. 



Zonal distribution : Humid Transition and Canadian. 



PTEROSPORA. 



1. Pterospora andromedea Nutt. Gen. 1: 269. 1818. 

 Type locality: "In Upper Canada near the Falls of Niagara." 

 Range: British Columbia to Canada, southward to California and Pennsylvania. 

 Specimens examined: Mount Rainier, Piper, August, 1895; Lake Chelan, Lake cfe Hull, 



August 24, 1892; Pend Oreille River, Lyall in 1859; Loon Lake, Winston; Lake Wenache, 



