182 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



El Valle, Miller & Johnston, no. 155, Aug. 2; San Juan Mt., alt. 

 400 m., Johnston, no. 160, July 16. American tropics; ubiquitous. 



DiPLAZIUM Sw. 



D. ARBOREUM (Willd.) Presl, Tent. Pterid., p. 114 (1836), not of 

 most authors. Asplenium arboreum Willd., Sp. pi., vol. 5, p. 320 

 (1810). A. Shepherdi Spreng., Nov. act. acad. Caes. Leop., vol. 10, 

 p. 231, pi. 17, figs. 5 and 6 (1821). Diplazium Shepherdi Link, 

 Hort. Berol., vol. 2, p. 70 (1833).— Juan Griego trail, alt. 450 ra., 

 Johnston, no. 158, July 29. Tropical America. 



D. CRENULATUM Liebm. Vid. selsk. skr., ser. 5, vol. 1, p. 254 

 (1849). Earlier synonymy much confused: the Linnaean name not 

 available. Referred under D . striatnm (L.) Presl by Urban (Symb. 

 Ant., vol. 4, p. 33 (1903) as occurring on Margarita Island. — El 

 Valle, Miller & Johnston, no. 161, Aug. 16; Juan Griego trail, alt.. 

 450 m., Johnston, no. 153, July 29. Tropical America. 



D. GRANDIFOLIUM Sw. in Schrad., Journ. bot., 1800, pt. 2, p. 62 

 (1801). Asplenium grandifolium- Sw., Prod. veg. Ind. Occ, p. 130 

 (1788). — Juan Griego trail, alt. 450 m., Johnston, no. 159, July 29. 

 Tropical America. 



Dryopteris Adans. 



D. AMPLA (H. & B.) Ktze., Rev. gen., vol. 2, p. 812 (1891). Poly- 

 podium amplum H. & B. ex Willd., Sp. pi., vol. 5, p. 207 (1810). — 

 El Valle, Miller d- Johnston, no. 169, Aug. 2; Juan Griego trail, 

 alt. 450 m., Johnston, no. 187 in part, July 29. Tropical America. 

 Florida. 



D. Johnston I Maxon, Contrib. U. S. nat. herb., vol. 10, p. 498 

 (1908). — Juan Griego trail, alt. 450 m., Johnston, no. 192, July 22 

 (tj^De). Known also from Trinidad, Jenman; Fendler, no. 54. 



D. MEGALODUS (Schkuhr) Urb., Symb. Ant., vol. 4, p. 21 (1903). 

 Polypodium megalodus Schkuhr, Kr}^:)t. Gewiichse, vol. 1, p. 24, pi. 

 19b (1806). — El Valle, Miller & Johnston, no. 164 in part. Tropical 

 America. 



D. PARASITICA (L.) Ktze., Rev. gen., vol. 2, p. 811 (1891). 

 Polypodium paras Iticum L., Sp. pi., vol. 2, p. 1090 (1753). Neph- 

 rodium parasiticum Desv., INIem. soc. Linn. Paris, vol. 6, p. 260 (1827). 

 Polypodium molle Jacq., Coll. bot., vol. 3, p. 188 (1789), not Schreb. 

 (1771), nor All. (1785). Nephrodium molle R. Br., Prod. fl. Nov. 



