PIPER—FLORA OF THE STATE OF WASHINGTON. 207 
SPECIMENS EXAMINED: Upper Nisqually Valley, Allen 149; Elbe, Flett 289; Falcon Val- 
ley, Suksdorf 500; 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. Pl. 2: 951. 1753. 
Calypso borealis Salisb. Parad. Lond. t. 89. 1806. 
Cytherea borealis Salisb. Trans. Hort. Soc. Lond. 1: 301. 1812. 
Calypso bulbosa Oakes, Cat. Vermont PI. 28. 1842. 
Calypso bulbosa “forma occidentalis”? Holzinger, Contr. Nat. Herb. 3: 251. 1895. 
Calypso occidentalis Heller, Bull. Torr. Club 25: 193. 1898. 
Type Locauity: “Habitat in Lapponia, Russia, Sibiria.” 
Rance: 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 467. 
ZONAL DISTRIBUTION: Transition and Canadian. 
The western form of this species has the hairs on the lip white instead 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. O. cordata. 
Column 2 to 3 mm. long. 
Lip 5 mm. long; ovary glabrous. .........--.---.-.--------- 2. O. caurina. 
Lip 9 mm. long; ovary glandular... - . Looe ee eee ee--------- 8. O. convallarioides. 
1. Ophrys cordata L. Sp. PI. 2: 946. 1753. 
Listera cordata R. Br. in Ait. Hort. Kew. ed. 2. 5: 201. 1813. 
Listera nephrophylla Rydberg, Mem. N. Y. Bot. Gard. 1: 108. 1900. 
Type Loca.ity: ‘Habitat in Europae frigidae sylvis humentibus.”’ 
Rance: Alaska to Labrador, south to Oregon and Pennsylvania. Europe. Asia. 
SPECIMENS EXAMINED: Westport, Lamb 1093; Cascade Mountains, latitude 49°, Lyall 
in 1859: Skokomish Valley, Aincaid, May, 1892; Stevens Pass, Sandberg & Leiberg 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. 
TypPe LocaLity: Cascade Mountains, Washington. Type collected by Henderson. 
Rance: 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 convallarioides (Sw.) W. F. Wight, Bull. Torr. Club 32: 380. 1905. 
Epipactis convallarioides Sw. Kongl. Vet. Akad. Handl. Stockh. II. 21: 232. 1800. 
Tastera convallarioides 'Torr. Comp. 320. 1826. , 
Type Locauitry: ‘i. Terra Nova Amer. sept.” 
Rance: Alaska to Nova Scotia, south to California and Vermont. 
