202 NATURAL HISTORY BULLETIN. 



Am., vol. in, p. 668; Bak., Jour. Bot., vol xxii, p. 364; Bom. et Ch. Fil., 



p. 231; (the last two from Costa Rica). 

 P. ccesfitosum Link, — Mett, Fil. Hort. Bot. Lip., p. 34, pi. xxiv, figs. 4, 5. 

 Campyloneurum repens L., — Smith, Hist. Fil., p. 96; Smith, Ferns, Br. and 



For., p. 101. 



Readily distinguished from P. -phyllitidis by its more slender 

 rootstock, stipe and frond, its thinner texture and more promi- 

 nent venation, and by the undivided large areoles Its gen- 

 eral aspect is very different. 



Creeping on trunks of trees by the slender, wiry, black 

 rootstock. Not rare near Camp Seven. 



Reported from Nicaragua without exact locality by Hemsley. 



13. P. PHYLLITIDIS L. PI. XX. FigS. 12, 13. 



Linn., Syst. Nat., vol. 11, p. 691; Swz., Syn. Fil., p. 28; Lieb., Mex. Breg., 

 p. 42; Mett., Fil. Hort. Bot. Lip., p. 34; Hook., Sp. Fil., vol. v, p. 38; 

 Roth., Les Foug., vol. 11, p. 17, pi. in; Hook, and Bak., Syn., Fil., 

 p. 3.4S; Eaton, Ferns N. Am., vol. 1, p. 321, pi. xlii, figs. 4-7; Under- 

 wood, Our Nat. Ferns and All., p. 82; Chapm., Fl. So. St., p. 588; Hemsl., 

 Biol. Cent. Am., vol. in, p. 665; Bom. et Ch., Fil., p. 231. 

 Campyloncuron phyllitidis Presl, Tent. Pter., p. 190, pi. vn, figs. 18-20; 



Fourn., Sertum Nic, p. 252. 

 Campyloneurum phyllitidis Presl, — Smith, Hist. Fil., p. 96; Smith, Ferns, 



Br. and For., p. 102. 

 P. repens Mett., Fil. Hort. Bot. Lip., p. 34, pi. xxiv, fig. 12. 



Quite common on the trunks and larger branches of trees. 

 The specimens from the vicinity of Castillo, the La Juana 

 River, and Grey town are of the large flossy, rather short- 

 stiped tvpe. A few fronds, from a tile roof in the village of 

 Castillo, are rather small, with long slender stipes. 



Another form, growing on trees in a partial clearing near 

 Castillo, has small, narrow, acuminate and acute, opaque, 

 long-stiped fronds. These measure 7 to 10 inches in length, 

 and 1 to 1^ inches in width; the stipe is 2^3 to 2/4 inches 

 long. The venation of this form is that of typical phyllitidis 

 with the large areoles usually divided by a single median 

 vein, whereas in the large glossy form there are more fre- 

 quently three rows of secondary areoles between the main 

 veins (see figures). 



Hooker (ibid.) reports it from Nicaragua without locality, 



