2I 8 NATURAL HISTORY BULLETIN. 



Meehan, Nat. Fl. and Ferns of U. S. — Thomas Meehan, The Native Flow- 

 ers and Ferns of the United States, ist Series, vol. i. — 1878. 



Mett., Fil. Hort. Bot. Lip. — G. Mettenius, Filices Horti Botanici Lipsiensis. 

 -1856. 



Mett., Ub. Ein. Farn. — G. Mettenius, Uber Einige Farngattungen. — Part 

 1, 1856; parts 111 and iv, 1858; parts v and vi, 1859. 



Presl, Hymen. — K. B. Presl, Hymenophyllaceae. — 1843. 



Presl, Rel. Haenk. — K. B. Presl, Reliquiae Haenkeanse. — 1830-36. 



Presl, Sup. Tent. Pter. — K. B. Presl, Supplementum Tentaminis Pterido- 

 graphiae. — 1845. 



Presl, Tent. Pter. — K. B. Presl, Tentamen Pteridographise. — 1836. 



Roth., Les Foug. — J. Rothschild, Les Fougeres, vols. 1, 11. — 1S67. 



Seeman's Bot. Voy. Her. — B. Seemann's Botany of the Voyage of H. M. S. 

 Herald, — 1852-7. 



Smith, Ferns, Br. and For. — J. Smith, Ferns, British and Foreign. — 1876. 



Smith, Hist. Fil.— J. Smith, Historia Filicum.— 1875. 



Swz., Fl. Ind. Occ. — O. Swartz, Flora Indise Occidentalis, vol. in. — 1806. 



Swz., Syn. Fil. — O. Swartz, Synopsis Filicum.— 1806. 



Underwood, List Pter. and Sperm. — Lucien M. Underwood, in List of 

 Pteridophyta and Spermatophyta. — 1893. 



Underwood, Our Nat. Ferns and All. — Lucien M. Underwood, Our Native 

 Ferns and Their Allies. — 1882. 



Williamson, Ferns of Ky. — John Williamson, Ferns of Kentucky. — 1878. 



