1682 CRYPTOGAMIA. FILICES. 1873. Polypodium. 



furcatum. Fronds forked, nearly doub ] y pinnate, femipinnate below 

 the forks ; fubdivifions linear-larrceoiate, entire, parallel. 

 Plum. fil tab. 28. 



E. Frond more than decompound. 



&rmatum. Leafets about doubly pinnate ; fubdivifions united at the 

 bafe linear, crenufate, hairy underneath : dots of fructification 

 crowded : trunk arboreous, prickly. Swart, ind occ. 



pruinatum. Leafets tripinnatifid, glaucous underneath: divifions 

 and fubdivifions lanceolate ; segments ovate, acute : trunk ar- 

 borefcent. Swart, ind. occ. 



punclulatum. Leafets doubly pinnatifid : divifions lanceolate, obtufe: 

 fegments ovate, rather obtufe; ferrulate at top ; fialk dotted, a 

 little villous. Swartz. ind. occ. 



effufum. Leafets tripinnatifid, membranaceous : divifions and fubdi- 

 vifions lanceolate ; fegments ferrulate; rachis margined. Swart, 

 ind. occ. 



* Dryopteris. Frond ternate, doubly pinnate, Threading ami reflected; 



fegments obtufe, ilightly cxenate : dotb of fructification diftinft. 

 Eng. Bot. t. 606. 



* calcareum. Frond ternate, doubly pinnate, erect, rather rigid ; 



fegments obtufe, (lightly crenate : dots of fructification con- 

 fluent. Eng, Bot t t. 1825. 



1874. ASPIDJUM. Fructification in roundifh fcattered dots, 

 not marginal: involucre umbiliGate, opening nearly all 

 round. 



A. Frond ftmple or trifoliate. 



Articulatum. Fronds elliptic, quite glabrous : dots of fructification 

 catenulate, fcattered : flalks jointed, from a creepinfh ihoot. 

 Plum, fil tab. 136. 



fiftillare. Fronds lanceolate, jointed, quite glabrous : dots of fruc- 

 tification folitary : llalk jointed, from a climbing branched (hoot. 

 Swartz. fpec* 



trifoliata. Fronds heart-3-Iobed or ternate ; middle-one larger, la- 

 teral-ones aurickd at the bafe. Plum. t. 148. 

 B. Frond pinnate. 



*L»nch!tis. Segments lunulate, ciliate ferrate, declined : ftalks fcaly. 

 Bolton fil. t. 1^. 



mucronatum. Segments fomewhat falcate, ferrulate, auricled up- 

 wards at the bafe, fpinulous at the tip : fralk or rachis fcaly^ 

 hairy. Sloan. Jam 1. t. 36./; 4. 5. 



falcatum. Segments broad hearted, falcate, pointed, entire ; ftalfe 

 fcaly. Thunb. Jap. /* 3, 5, 



