80 CONTEIBUTIONS FROM THE NATIONAL HERBARIUM. 



ASPLENIUM. 



Sori curved; leaves flaccid, hipinnate, 0.5 to 1 m. long 1. A. cycJosoram. 



Sori straight; leaves firm, 6 to 20 cm. long, simply pinnate. 



Rachis brown ; leaf segments oval 2. A. trichoinane!^. 



Rachis green : leaf segments ovate 3. A. viride. 



1. Asplenium trichomanes L. Sp. PI. 2: 1080. 1753. Spleenwort. 

 Type LocALrrv: European. 



Range: Alaska to Nova Scotia, south to Arizona, Texas, and Alabama. 



Specimens examined: Snocjualmie Falls, Parker, August, 1892; Snoqualmie, TJind- 

 shaw; East Seattle, Hindshaw; west Klickitat County, iS'wZ.-.sfi'o?/ 1228; Cape Horn, Piper 

 4971; Quinault, Conard 220; Kirkland, Witlenmyer. 



Zonal distribution: Humid Transition. 



2. Asplenium viride Huds. Fl. Angl. 385. 1762. 



Type locality: "Habitat in rupibus humidis in comitatibus Eboracensi et Westmor- 

 landica," England. 



Range: Alaska to Oregon, Colorado, and Vermont. Europe. Asia. 



Specimens examined: Wenache Region, Brandegee 1216; near Mount Baker, FJelt. 



Zonal distribution: Hudsonian or Arctic. 



ATHYRIUM. 



1. Athyrium cyclosorum Rupr. Beitr. Pflanzenk. Russ. Reich. 3: 41. 1845. 

 Type locality: " Petropawlowsk! et Unalaschka! Kadiak!" 

 Range: Alaska to Nebraska and California. Kamchatka. 



Specimens examined: Olympia, Henderson, August 23, 1892: Stehekin, Whlted 1387; 

 Stevens Pass, Sandberg d; Leiberg 771; Skagit Pass, Lake ci' Hull, August 24, 1892; with- 

 out locality, Vasey in 1889; Clarks Springs, Kreager 34. 

 Zonal distribution: Humid Transition to Canadian. 



This species has commonly been referred to A. Jilix-foem,ina (L.) Roth, from which it 

 appears amply distinct. 



POLYSTICHUM. 

 Leaves simply j)innate. 



L;-al-stalk short; segments ti'iangular or liroudly lance- 

 olate 1 . P. hnchitis. 



Leaf-stalk long: segments linear-lanceolate. 



Leaves 60 to 90 cm. long, the segments not over- 

 lapping 2. P. viun Iturn . 



Leaves about 30 cm. long, the segments overlapping.. 2a. P. munifum imhricans. 

 Leaves hipinnate or bipinnatifid. 



Sori few ; leaves hipinnate at base . 3. P. Jernmoni. 



Sori numerous; leaves bipinnatifid at base . 4. P. scopvlinuni . 



1. Pclysticlium loiichitis (L.) Roth, Tent. Fl. Germ. 3: 71. 1800. Holly fern. 



Pohjpodhnn lonchilis L. Sp. PI. 2: 1088. 1753. 



Aspidhim hnchitis Sw. Schrad. Journ. Hot. 1800-: 30. 1801. 



Type locality: "Habitat in alpinis Helvetiae, Baldi, Arvoniae, Monspelii, Virginiae. " 



Range: Subarctic regions southward to California, Colorado, and Wisconsin. Europe. 

 Asia. 



Specimens examined: Olympic Mountains, Piper, August, 1895; Mount Rainier, Piper, 

 August, 1895; Goat Mountains, Allen, August 5, 1895; Skamania County, Suksdorf 

 20.56; mountains near Ellensburg, Brandegee 1220; Fish Lake, Dunn, August 8, 1900; 

 Bridge Creek, Elmer 659. 



Zonal distribution: Arctic and Hudsonian. 



