AN ENUMERATION OF CULTIVATED FERNS. 



189 



receptacle, constituting a linear, continuous or interrupted 

 sorus. Indusvum linear, marginal. 



* Vernation fasciculate, decumbent 

 ccespitose. 



■f Fronds simply pinnate. 



1. P. longifolia, Linn.; (Plum. 

 Ml. t. 69); Schh. Fit 

 t. 88 ; Lowe's Ferns, 3, 

 t. 42. P. vittata, Linn. 

 P. ensifolia, Sw. P. Ian- 

 ceolata, Desf. P. Alpini, 

 Desv. P. obliqua, Forsk. 

 P. costata, Bory. P. 

 requalis, Fresl. P. acu- 

 minatissimum, Blume. 

 P. amplectans, Wall. P. 

 Bahamensis, Fee. — Tro- 

 pics and Northern Tem- 

 perate Zone. 



Barren pinna. No. 4. 



Purtion of fertile frond, natural size 



ff Fronds pinnate, the lower pair or more of pinnae 

 hied or pinnate. 



2. P. Cretica, Linn. ; Schh. Fil. t. 90; Lowe's Ferns, 3, t. 43. 

 P. serraria, Sw. P. pentaphylla, Willd. 



Var. — albo-lineata, Hooh.Bot. Mag. t. 5194; Louie's 

 New Ferns, t. 25. 



Tropics and North Temperate Zone. 



