200 NATURAL HISTORY BULLETIN. 



The species belongs to the subgenus Lepicystis and is related 

 to P. leftidofiteris, from which it differs by the narrower and 

 more perfectly pinnate frond which scarcely tapers downward, 

 by the total absence of hairs and the uniform white color of 

 the scales even in young fronds, and by the shorter, more 

 slender rootstock. 



Seven plants with thirteen fronds were collected on the 

 larger branches of a Jicara-tree (Crescent ia cucurbit ina L.) 

 which grew in a partial clearing opposite Castillo. 



9. P. aureum L. var. areolatum (//. B. K.) Bak. 



Hook, and Bak., Svn. Fil., p. 347. 

 P. sporadocarpum Willd.,— Mett., Fil. Hort. Bot. Lip., p. 36; Mett, Ub.Ein. 



Farng., pt. 1, p. 100. 

 P. areolatum H. B. K., — Eaton, Fil. Wr. et Fend., p. 200; Lieb., Mex. Breg., 



p. 35; Bom. et Ch., Fil., p. 219. 

 Phlebodium areolatum Willd., — Smith, Hist. Fil., p. 94; Smith, Ferns, Br. 



and For., p. 83. 

 Ckrysopteris sporadocarpa Fee, — Fourn., Sertum Nic, p. 252. 



In the following list of references for the type, those which 

 clearly exclude the variety are omitted. In those which are 

 given the variety may be, or certainly is, included. 



P. aureum L., Syst. Nat., vol. 11, p. 692; Swz., Sjn. Fil., p. 32; Hook., Sp. 

 Fil., vol. v, p. 16; Roth., Les Foug., vol. 11, p. 25, pi. vi; Eaton, Ferns 

 N. Am., vol. 1, p. 115, pi. xvi; Underwood, Our Nat. Ferns and All., 

 p. 82; Chapm., Fl. So. St., p. 5S8; Hemsl., Biol. Cent. Am., vol. in, p. 

 655; Bak., Jour. Bot., vol. xxu, p. 364 (var.). 



Pleopeltis aurea Presl., Tent. Pter., p. 193, pi. vill, fig. 1. 



A single fruiting specimen was collected on a fallen tree 

 between Camp Menocal and the Divide. 



Fournier reports the variety (as C. sporadocarpa) without 

 exact locality. Hemsley reports P. aureum, also without local- 

 ity, but probably refers to the same specimens as Fournier. 



10. P. angustifolium Swartz var. ensifolium( Willd.') Bak. 



Hook, and Bak., Syn. Fil., p. 348. 



P. ensifolium Willd., — Presl, Rel. Haenk., p. 21. 



Camfyloneurum ensifolium Willd., — Smith, Hist Fil., p. 96; Smith, Ferns, 

 Br. and For., p. 101. 



