78 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



3. Phegopteris dryopteris (L.) Fee, Gen. Fil. 243. 1850-52. 



Polypodium dryopteris L. Sp. Fl. 2: 1093. 1753. 



Polypodium dryopteris rigidiiis Hook. Fl. Bt)r. Am. 2: 259. 1840. 



Type locality: European. 



Range: Alaska to Newfoundland, south to Oregon, Colorado, and Virginia. 



Speclmexs examined: Clallam County, £"//«?/• 2813; Whidby Island, G^arrfn*;/' 372; Port 

 Ludlow, Blnns, June 18, 1889; Silverton, Bouck in 1899; Snoqualmie, Parker, August, 1892; 

 Skagit Pass, Lake <fc Hull 659; Stevens Pas^, Sandberg d' Leiherg llS, Whited 1436; Horse- 

 shoe B&sm, Elmer 732; without Ux-ality, 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, Proe. Roy. Soc. Canada 4^: 11. 1887. 



Type locality: Unalaska. 



Range: Alaska to Quebec, south to California. 



Speclmens EXA.MINED: Clallam County, Elmer 2809; Mount Stuart, Sandberg dt Leiherg 

 820; Fish Lake, Dunn, August 8, 1900; Horseshoe Basin, Lake ih Hull mi; Elmer 72S; 

 west Klickitat County, Suksdorf2O30; without locality, Vasey in 1889; Seattle, Piper. 



Zonal distribution: Humid Transition to Canadian. 



PTERIDIUM. 



1. Pteridium aquilinum pubescens Underw. Our Native Ferns ed. 6. 91. 1900. 



Bracken. 



Pteris aquilina lanuginosa Bong. Mem. Acad. St. Petersb. VI. 2: 176. 1832, not Pieris 

 lanuginosa Bory 1810. 



Type locality: Sitka. 



Range: Alaska to California and Arizona. 



Specimens examined: Fish Lake, Dunn, August, 1900; Wenache Mountains, Whited 

 1416; Tumwatcr C&uyon, Sandberg cfc 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 1. P. occidentalis. 



Veins concealed; leaves ovate, tripinnate, the linear acute segments 



crowded 2. P. densa. 



1. PeUaea occidentalis (E. Nelson) Rydberg, Mem. N. Y. Bot. Gard. 1: 466. 1900. 

 Pellaea atropurpurea occidentalis E. Nelson, Fern Bull. 7: 30. 1899. 



Pellaea pumila Rydberg, xMem. N. Y. Bot. Gard. 1 : 4. 1900. 

 Type locality: " In a. canon in the Laramie Hills," Wyoming. 

 Range: 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. t. 13. 1854. 

 Type locality: "Oregon, on the banks of Rogue's River." 

 Range: British Columbia to Wyoming and California. 



Specimens examined: Clallam County, Elmer 2810; Mount Stuart, Elmer 1105; Sand- 

 berg (& Leiberg 821; Stehekin River, Whited 1385; Blue Mountains, Homer 526; without 

 locality, Vasey in 1889. 



Zonal distribution : Probably Hudsonian. 



