84 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



4. Botrychium onondagense Undcnv. Bull. Torr. Club 30: 47. 1903. 

 Type locality: Near Split Rock, Syracuse, Now York. 

 Range: Washington, Mo:;ta:ia, Michigan, and New York. 

 Specimens examined: Olympic Mountains at foot of Mount St«^le, Piper 928. 

 Zonal distbibition: I"Knibtful. 



6. Botrychium lanceolatum (S. G. Gmel.) Angs. Bot. Notiser 1854: 68. 1854. 

 Osmumia Innceolata S. G. Gmel. Xov. Conim. Acad. Sci. Petrop. 12: 51(5. 1768. 

 TiPE locality: European. 



Range: Wa.shington to Colorado, Pennsylvania, and northward. Europe. -\sia. 

 Specimens examined: Foot of Mount Rainier, Allen, August 2, 1899. 

 Zonal distribitiox : Probably Canadian. 



6. Botrychium neglectum Wood, Clausbook Bot. 635. 1847. 

 Type locality: "Growing in wo<)d.s, Meriden, N. H." 



Range. Ala.ska to Nova Scotia, south to Washington, South Dakota, and Maryland. 

 Speclmens examined: Mount Adams, Suksdorf 1220. 



MARSILEACEAE. 



MARSILEA. 



1. Marsilea vestita Hook. & Grev. Ic. Fil. p/. 150. 1832. 



Type locality "Ad flumaen Columbiam, ora occidentali Americae Septentrionalis. " 



Range: British Columbia to KatLsas and Arizona. 



Specimens examined: Falcon Valley, Suksdorf 227; opposite mouth of Wenache River, 

 Watson 470; west Klickitat County, Suksdorf 119; Columbia River Valley, Brandegee 

 1225; Wenache, Whited 1426; Pa.sco, Ilindshaw 35; Lake Chelan, Lake cfc Hull 657; Pull- 

 man, Piper 1736; Henderson 2431; Almota, Piper, September 9, 1896; Sentinel BlufFs, 

 Cotton 1347. 



Zonal distribution : Upper Sonoran and Arid Transition. 



SALVINIACEAE. 



AZOLLA. 



1. Azolla caroliniana Willd. Sp. PI. 6: 541. 1810. 

 Type ix>cality: "Hab. in aquis Carolinae." 



Range: British Columbia to Ontario, south to Florida and Mexico. 

 Specimens examined: West Klickitat County, SwArsdor/" 1216. 

 Zonal distribu~ion : Upper Sonoran. 



EftUISETACEAE. 



EQTJISETTTM. Horsetail. 



Stems evergreen, perennial; spike tipped with a rigid point. 



Plant tall and stout : stems many-grooved, 0.5 to 2 meters high. 



Stems rough-tuberculate, dark green I.E. hyemale. 



Stems smooth, pale 2. E. laevigatum. 



Plants tufted, slender; stems 5 to lO-grooved. 



Sheaths 5 to 10-toothed ; stems hollow 2.E. variegaium. 



Sheaths 3-toothed ; stems solid A.E. sdrpoides. 



