—26— 



Nephrodium Boottii f. multifiorum Gilbert. N. Am. Pteri- 

 dophytes. 36, 1901. 



Nephrodium spinulosum f. fructuosum Gilbert N. Am. 

 Pteridophytes. 37, 1901. 



NepTirodium thelypteris f. Pufferae A. A. Eaton. Fern Bull. 

 10 : 78/1902. 



Ophioglossum Alaskanum E. G. Britton. Bull. Torr. Bot. 

 Club. 24: 556, 1897. 



Ophioglossum arenarium E. G. Britton. Bull. Torr. Bot. 

 Club. 24: 555, 1897. 



Osmunda cinnamomea f. glandulosa Waters. Fern Bull. 10: 

 21, 1902. 



Pellaea atropurpurea cristata Trelease. Rept. Mo. Botanical 

 Gardens. 12: 77, igoi. 



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

 1899. 



Polypodium hesperinum Maxon. Proc. Biol. Soc. Wash. 

 13: 200, 1900. 



Polypodium Macbridense Shimek. Bull. Lab. Nat. Hist. Univ. 

 Iowa. 4: 199, 1897. 



Polypodium vulgare f. acuminatum Gilbert. Fern Bull. 10: 

 13, 1902. 



Polypodium vulgare Columbianum Gilbert. N. Am. Pteri- 

 dophytes. 38, 1901. 



Polystichum acrostichoidcs f. crispum Clute. Our Ferns in 

 Their Haunts. 107, 1901. 



Polystichum munitum f. Habellatum A. A. Eaton. Fern Bull. 

 9: 8. 1901. 



Polystichum tenue Gilbert. Fern Bull. 8: 63, 1900. 

 Pteris aquilina pseudocaudata Clute. Fern Bull. 8: 39. 1900. 

 Selaginella arenicola Underwood. Bull. Torr. Bot. Club. 25: 

 541, 1898. 



Selaginella Bigelovii Underwood. Bull. Torr. Bot. Club. 

 25: 130, 1898. 



Selaginella cinerascens A. A. Eaton. Fern Bull. 7 : 33. 1899. 

 Selaginella densa Rydberg. Mem. N. Y. Bot. Gard. 1 : 7, 

 1900. 



Selaginella rupcstris Fendleri Underwood. Bull. Torr. Bot. 

 Club. 25 : 127, 1898. 



Selaginella rupincola Underwood. Bull. Torr. Bot. Club. 25 : 

 129, 1898. 



Selaginella Watsoni Underwood. Bull. Torr. Bot. Club. 25 : 

 127, 1898. 



Woodzvardia spinulosa f. ramosa A. A. Eaton. Fern Bull. 

 9: 87, 1901. 



