88 CHARACTEES OF TRIBES AND GENERA, 



Sp. T. papillosa {Bl). 



A native of Java and the Philippine Islands. With the 

 exception of P. vulgare this is the only representative of the 

 forked free- veined Polypodice in the Eastern Hemisphere. 



8. — PoLTPODiDii, Linn, in part (1737). 



Surculum generally short and thick, in some hypogeous. 

 Fronds pinnatifid, pimiate, or rarely bi-tripinnatifid or 

 simple, smooth, villose or sqnamiferous, from a few inches 

 to two or three feet high. Veins once or more times forked 

 free, exterior branch soriferoas. Eeceptades terminal, punc- 

 tiform, superficial. Sori round, rarely oval, transversely 

 uniserial or solitary on lacinise of mnltij)artate fronds. 

 Type. Polypodium vulgare, Linn. 



Illust. — Hook and Bauer, t. C9, B. Moore Ind. Fil., p. 



66, fig. 1. J. Sm. Perns, Brit, and For., fig. 5. 



Hook. Syn. Fil., t. 5, fig. 48, a, b. 



Obs. This genus as now restricted by me contains between 



thirty and forty known species, which, with the exception 



of 2'. vulgare of Em-ope, are all natives of West Indies and 



the Continent of America, P. piellucidum extending west to 



the Sandwich Islands. The following are the principal 



species arranged in sections : — 



1. — Suspensum Group. 

 Fronds linear, pinnatifid or snbpinnate, villose, rarely 

 smooth. Stipes long, slender, wiry, often arcuate. Veins 

 sometimes simple, or with the soriferous branch very short. 

 Ex. P. comptonifefolium, I)esv. (P. scolopendrioides. 

 Hook et Orev., p. 42) ; P. suspensum, Linn. ; P. asplenii- 

 folium, Linn. ; P. cultratum, Willd. ; P. Phlegmaria, /. 

 Srii. ; * P. lanigerum, Eat. ; P. semiadnatum, UooJc. ; P. 

 alternifolium, UooTv. ; P. melanopus, Grev. 



* Lond. Journ. Bot., p. 196, vol. iv. 



