210 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Spur clavate, usually shorter than the lip 4. L. dUafafa. 



Spur not clavate, longer than the lip. 



Spike moderately dense; spur acutish 5. L. leucostachys. 



Spike very dense ; spur obtuse 5a. L. leiico.'itachys robusta. 



1. Limnorchis stricta (Lindl.) Rydberg, Mem. N. Y. Bot. Gard. 1 : 105. 1900. 

 Platanthera stricta Lindl. Gen. & Sp. Orch. 2SS. 1835. 



Habenaria gracilis Wats. Proc. Am. Acad. 12: 277. 1877. 



Type locality: "In America boreali-occidentali." Collected by Douglas. 



Range: Alaska to Washington and Colorado. 



Specimens examined: Clallam County, Elmer 2549; Mount Rainier, Smith 874; Piper 

 2094; Cascade Mountains, latitude 49°, Lyall in 1859; Silverton, Bouck; Seattle, Piper, 

 June, 1889; Olympia, Henderson, May, 1892; upper Nisqually Valley, Allen 76; Mount 

 Adams, Svlsdorf 41 ; Wind River, Flett 110; Skagit Pass, Lake & Hull 624 in part; Ellens- 

 burg, Whited 532; Stampede Pass, Henderson, October, 1892; Simcoe Mountains, Howell 

 302; Lake Wenache, Sandberg cfc Leiherg 647; ihvaco. Piper 5001; Kreager 189; Green 

 River Hot Springs, Piper 415. 



Zonal distribution: Transition to Hudsonian. 



2. Limnorchis viridiflora (Cham.) Rydberg, Bull. Torr. Club' 28: GIC). 1901. 

 Hahenuria horealis viridiflora Cham. Linnaea 3: 28. 1828. 



Type locality: "In Unalaschka." 

 Range: Alaska to Washington and Colorado. 

 Specimens examined: Spokane County, Svksdoif 452. 



Perhaps not distinct from L. hyperhorea (L.) Rydb. {Habenaria hyperborea R. Br.), to 

 wiiich it has been referred. 



3. Limnorchis laxiflora Rydberg, Bull. Torr. Club 28: 630. 1901. 

 Type locality: Coast Mountains, Oregon. 



Range: Waslungton and Oregon to Colorado. 



Specimens examined: Eastern Washington, without locality, Wilkes Expedition. 



4. Limnorchis dilatata (Pursh) Rj-dberg in Britton, Man. 294. 1901. 

 Orchis ddatata Pur.sh, Fl. 2: 588. 1814. 



Habenaria dilatata Hook. Exot. Fl. 2: t. 05. 1S25. 

 Habenaria borealis Cham. Linnaea 3: 28. 1828. 

 Type locality: Labrador. 



Range: Alaska to New England, Colorado, and Washington. 



Specimens examined: Olympic Mountains, Piper, August, 1895; Stevens Pass, Whited 

 1840; Mount Stuart, Elmer 1213; Mount Adams, Suksdorf 2298. 



6. Limnorchis leucostachys (Lindl.) R^'dberg, Mem. N. Y. Bot. Gard. 1: 106. 1900. 



Platanthtra Itucostachy.s Lindl. Gen. & Sp. Orch. 288. 1835. 



Habenaiia leucostachys Wats. Bot. Cal. 2: 134. 1880. 



Type LfCALiTY: "In ora occidentali Americae septentrionalis." Collcclcd by Douglas. 



Range: Alaska to California and Utah. 



Specimpns examined: Clallam County, Elmer 2551; Blue Mumitains, Luke <& Hidl, 

 July, 1892; Waitsburg, Horner 188; Salmon River, Blue Mountains, Horntr 462. 



Zonal pistribution: Transition. 



5a. Limnorchis leucostachys robusta Rydberg, Bull. Torr. Club 28: 626. 1901. 



Type locality: "Washington." Collected by G. R. Vasey in 1889. 



Range: British Columbia to Oregon and Idaho. 



Specimens examined: Seattle, Piper 291, July, 1897; Olympia, Heller 4046; Kincaid, 

 July, 1896; Nisqually Valley, Allen 75; Skagit Pass, Lake <£■ Hull 624 in part; Wenache 

 region. Tweedy, July, 1883; Mount Stuart, Sandberg cfc Leiherg 576; Ellensburg, Whited 

 532, 698; Falcon Valley, Suksdorf \Zm; Marshall Junction, Piper, July 2, 1896; Mount 

 Carlton, Kreager 195; without locality, Vasey in 1889. 



Zonal distribution: Transition and Canadian. 



