78 CONTRIBUTIONS FROM ‘THE NATIONAL HERBARIUM. 
- 3. Phegopteris dryopteris (L.) Fée, Gen. Fil. 243. 1850-52. 
Polypodium dryopteris L. Sp. Pl. 2: 1093. 1753. 
Polypodium dryopteris rigidius Hook. Fl. Bor. Am, 2: 259. 1840. 
Type Locauiry: European. 
Rance: Alaska to Newfoundland, south to Oregon, Colorado, and Virginia. 
SPECIMENS EXAMINED: Clallam County, Elmer 2813; Whidby Island, Gardner 372; Port 
Ludlow, Binns, June 18, 1889; Silverton, Bouck in 1899; Snoqualmie, Parker, August, 1892; 
Skagit Pass, Lake & Hull 659; Stevens Pass, Sandberg & Leiberg 778, Whited 1436; Horse- 
shoe Basin, Elmer 732; without locality, Vasey in 1889; Davis Ranch, Kreager 212, 185; 
lone, Kreager 404; Mount Carlton, Kreager 275. 
ZONAL DISTRIBUTION: Mostly Canadian. 
ADIANTUM. 
1. Adiantum pedatum aleuticum Rupr. Beitr. Pflanzenk. Russ. Reich. 3: 49. 1845. 
MAIDEN-HAIR FERN. 
Adiantum pedatum rangiferinum Burgess, Proc. Roy. Soc. Canada 44: 11. 1887. 
Type Locauiry: Unalaska. 
Rance: Alaska to Quebec, south to California. 
SPECIMENS EXAMINED: Clallam County, Emer 2809; Mount Stuart, Sandberg & Leiberg 
820; Fish Lake, Dunn, August 8, 1900; Horseshoe Basin, Lake & Hull 661; Elmer 723; 
west Klickitat County, Suksdorf 2030; without locality, Vasey in 1889; Seattle, Piper. 
ZONAL DISTRIBUTION: Humid Transition to Canadian. 
PTERIDIUM. 
1. Pteridium aquilinum pubescers Underw. Our Native Ferns ed. 6. 91. 1900. 
BRACKEN. 
Pteris aquilina lanuginosa Bong. Mem. Acad. St. Petersb. VI. 2: 176. 1882, not Pteris 
lanuginosa Bory 1810. 
TYPE LOCALITY: Sitka. 
Range: Alaska to California and Arizona. 
SPECIMENS EXAMINED: Fish Lake, Dunn, August, 1900; Wenache Mountains, Whited 
1416; Tumwater Canyon, Sandberg & Leiberg 520; Wawawai, Beattie, July 12, 1902; Clea- 
lum Lake, Cotton 1852. 
ZONAL DISTRIBUTION: Humid Transition, abundant; Arid Transition, occasional. 
PELLAEA. 
Veins manifest; leaves oblong, pinnate, the segments oblong, obtuse, 
not crowded. ..-..-...-.-.-. 2-222 eee ee eee 1. P. occidentalis. 
Veins concealed; leaves ovate, tripinnate, the linear acute segments 
crowded .......--.-2-. 22-22-2222 2-22 e eee ee ee eee 2. P. densa. 
1. Pellaea occidentalis (EK. Nelson) Rydberg, Mem. N. Y. Bot. Gard. 1: 466. 1900. 
Pellaea atropurpurea occidentalis EK. Nelson, Fern Bull. 7: 30. 1899. 
Pellaea pumila Rydberg, Mem. N. Y. Bot. Gard. 1: 4. 1900. 
Type Locauity: “In a cafion in the Laramie Hills,’? Wyoming. 
Rance: South Dakota to Wyoming and Washington. 
SPECIMENS EXAMINED: West Klickitat County, Suksdorf 2083. 
ZONAL DISTRIBUTION: Doubtful. 
2. Pellaea densa (Brack.) Hook. Sp. Fil. 2: 150. 1858. 
Onychium densum Brack. in Wilkes Exped. 16: 120. ¢. 13. 1854. 
TypE Loca.ity: ‘‘Oregon, on the banks of Rogue’s River.”’ 
Rance: British Columbia to Wyoming and California. 
SPECIMENS EXAMINED: Clallam County, Elmer 2810; Mount Stuart, E2mer 1105; Sand- 
berg & Leiberg 821; Stehekin River, Whited 1385; Blue Mountains, Horner 526; without 
locality, Vasey in 1889. 
ZONAL DISTRIBUTION: Probably Hudsonian. 
