PIPER FLORA OF THE STATE OF WASHINGTON. 207 



Specimens examined: Upper Nisqually Valley, ylZ/en 149; FAho, Flett 289; Falcon Val- 

 ley, Sul:sdi>7f dOO; Wind River, Flett 1109; Blue Mountains, Piper 2428; Green River Hot 

 Springs, Piper in 1887. 



Zonal distribution: Canadian. 



CYTHEREA. 



1. Cytherea bulbosa (L.) House, Bull. Torr. Club 32: 382. 1905. Calypso. 



Cypripedium bulbosum L. Sp. PI. 2: 9.51. 1753. 



Calypso horealis Salisb. Parad. Lond. t. 89. 1806. 



Cytherea horealis Salisb. Trans. Hort. Soc. Lond. 1: 301. 1812. 



Calypso bulbosa Oakes, Cat. Vermont PI. 28. 1842. 



Calypso bulbosa "forma ocddentalis" Holzinger, Contr. Nat. Herb. 3: 251. 1895. 



Calypso ocddentalis Heller, Bull. Torr. Club 25: 193. 1898. 



Type locality: "Habitat in Lapponia, Russia, Sibiria." 



Range: Alaska to Labrador, south to California, Michigan, and Maine. 



Specimens examined: Whidby Island, Piper, May, 1898; Seattle, Piper 193; Tacoma, 

 Flett 111; Olympia, Cooper; Roy, Allen, April 19, 1889; Blue Mountains, Horner 407. 



Zonal distribution: Transition and Canadian. 



The western form of this species has the hairs on the lip white in.stcad of yellow. It 

 grows commonly in places carpeted by Hypnum, but we have never found it occurring in 

 Sphagnum, as it does in the New England States. 



OPHRYS. 



Column very short, 5 mm. long 1 . 0. corduta. 



Column 2 to 3 mm. long. 



Lip 5 mm. long; ovary glabrous 2. O. caurina. 



Lip 9 mm. long; ovary glandular 3. 0. convallar'iOides . 



1. Ophrys cordata L. Sp. PI. 2: 946. 1753. 



Listera cordata R. Br. in Ait. Hort. Kew. ed. 2. 6: 201. 1813. 



Listera nephrophylla Rydl>erg, Mem. N. Y. Bot. Gard. 1: 108. 1900. 



Type locality: "Habitat in Europae frigidae sylvis humentibus." 



Range: Alaska to Labrador, south to Oregon and Pennsylvania. Europe. Asia. 



Specimens examined: Westport, Lamb 1093; Cascade Mountains, latitude 49°, Li/itll 

 in 1859; Skokomish Valley, Kincaid, May, 1892; Stevens Pass, Sandberg tfc Leibery 780; 

 Ilwaco, Piper 4951; Seattle, Piper in 1885. 



Zonal distribution: Humid Transition. 



2. Ophrys caurina (Piper) Rydberg, Bull. Torr. Club 32: 610. 1905. 

 Listera caurina Piper, Erythea 6: 32. 1898. 



Listera retusa Suksdorf, Deutsch. Bot. Monatss. 18: 155. 1900. 



Type locality: Cascade Mountains, Washington. Type collected by lIendei>ion. 



Range: British Columbia to Oregon. 



Specimens examined: Clallam County^ Elmer 2548; Baldy Peak, Lamb 1295; Mount 

 Baker, Flett 865; Skamania County, Suksdorf 2326 ; Green River Hot Springs, Piper 380; 

 Stampede Pass, Henderson, July, 1892. ■' 



Zonal distribution: Canadian. 



3. Ophrys convaUarioides (Sw.) W. F. Wight, Bull. Torr. Club 32: 380. 1905. 

 Epipactis convallarioides Sw. Kongl. Vet. Akad. Handl. Stockh. II. 21: 232. 18(X). 

 Listera convallarioides Torr. Corap. 320. 1826. 



Type locality: "E. Terra Nova Amer. .sept." 



Range: Alaska to Nova Scotia, sQUth to California and Vermont. 



