84 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
4. Botrychium onondagense Underw. Bull. Torr. Club 30: 47. 1903. 
Type Loca.ity: Near Split Rock, Syracuse, New York. 
Rance: Washington, Montana, Michigan, and New York. 
SPECIMENS EXAMINED: Olympic Mountains at foot of Mount Steele, Piper 928. 
ZONAL DISTRIBUTION: Doubtful. 
5. Botrychium lanceolatum (5S. G. Gmel.) Angs. Bot. Notiser 1854: 68. 1854. 
Osmunda lanceolata S. G. Gmel. Nov. Comm. Acad. Sci. Petrop. 12: 516. 1768. 
TYPE LocaLity: European. 
Rance: Washington to Colorado, Pennsylvania, and northward. Europe. Asia. 
SPECIMENS EXAMINED: Foot of Mount Rainier, Allen, August 2, 1899. 
ZONAL DISTRIBUTION: Probably Canadian. 
6. Botrychium neglectum Wood, Classbook Bot. 635, 1847. 
TyPE Locaity: ‘‘Growing in woods, Meriden, N. H.” 
Rance. Alaska to Nova Scotia, south to Washington, South Dakota, and Maryland. 
SPECIMENS EXAMINED: Mount Adams, Suksdorf 1220. 
MARSILEACEAE. 
MARSILEA. 
1. Marsilea vestita Hook. & Grey. Ic. Fil. pl. 159. 1882. 
Type Locauity “Ad flumaen Columbiam, ora occidentali Americae Septentrionalis.’ 
ance: British Columbia to Kansas 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; Pasco, Hindshaw 35; Lake Chelan, Lake d& Hull 657; Pull- 
man, Piper 1736; Henderson 2431; Almotia, Piper, September 9, 1896; Sentinel Bluffs, 
Cotton 1347. 
ZONAL DISTRIBUTION: Upper Sonoran and Arid Transition. 
, 
SALVINIACEAE. 
AZOLLA. 
1. Azolla caroliniana Willd. Sp. Pl. 5: 541. 1810. 
Type vocaity: ‘Hab. in aquis Carolinae.’’ 
RanGeE: British Columbia to Ontario, south to Florida and Mexico. 
SPECIMENS EXAMINED: West Klickitat County, Suksdorf 1216. 
ZONAL DISTRIBU7ION: Upper Sonoran. 
EQUISETACEAE. 
EQUISETUM. MHokrserat.. 
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......... 2.22.2... ----- 1. E. hyemale. 
Stems smooth, pale............2..2-.22-.--- Slee eee eee 2. E. laevigatum. 
Plants tufted, slender; stems 5 to 10-grooved. 
Sheaths 5 to 10-toothed; stems hollow... -...-...-.---.-.--- 3. EF. variegatum. 
Sheaths 3-toothed; stems solid_-.........-.-.-.------------- 4. EF. scirpoides. 
