171. P. pcctinata L. Open banks. Cinchona. A much 



larger form with slightly oblong sori was collected at 

 Cedar Valley and may be P. paradisae. (158). 



172. P. dissimile L. Rio Grande. On trees with P. chnoodes 



which it superficially resembles. (277a). 



173. P. incanum Sw. Abundant on trees, rocks, open banks 



and the roofs of houses from sea level to the moun- 

 tain tops. (169). 



174. P. thysanolepis R. Br. Half shady banks at Cinchona. 



In dry weather this species curls up like P. incanum. 



175. P. squamatum L. With the two preceding species 



at Cinchona. Only one specimen collected. (372). 



176. P. loriceum L. Clambering over trees and earth at Cin- 



chona. Most abundant. The fronds are similar in 

 appearance to those of P. vulgarc. Rhizomes long 

 and very brittle. Fronds usually horizontal. (86). 



177. P. chnoodes Spreng. Pendant from trees at Rio 



Grande. A soft pubescent species, at first glance 

 likely to be mistaken for Ncphrolcpis. (277). 



178. P. aureum L. Cuna Cuna Gap, on Palm trees. The 



variety arcolatnm H. B. K. with both sides of the 

 frond glaucous was collected along roadsides at 

 Cedar Valley. (157). 



179. P. decumanum Willd. Cedar Valley. Not common. 



Closely resembles the preceding. (155). 



180. P. crassifolium L. Morce's Gap. Abundant. Distin- 



guished from the following by its greater size. This 

 species also loves higher altitudes than Phyllitidis. 



181. P. phyllitidis L. Plentiful on earth or trees, Cedar 



Valley. Resembles P. crassifolium very closely ex- 

 cept in size of frond and fruit-dots. (172). 



182. P. repens L. Morce's Gap. Trailing over rocks and 



trees. Fronds half erect. (55). 



183. P. angustifolium Sw. Pendant from trees and rocks. 



Common at Cedar Valley. (165). 



184. P. piloselloides L. On trunks, rocks and fallen trees 



in all moist places. Rootstock extensively creeping, 

 (248). 



