IxXXViii. GENEBA OP FEBNS: 



in part : Fie ; NBPHBODIFM, Richard in part : Auct. ; THEITPTEBIS, 

 Schott; ABTHBOBOTBYS, Wallich; HYPODEMATIUM, Kunze; AMAUBO- 

 PEI/TA, Kunze ; ABSENOPTEBIS, Webb et Berthelot in part; HEMISTHEUM, 

 Newman; LOPHODIUJI, Newman; GYMNOTHALAMIUM, Zenker MS; Dl- 

 CHASIUM, A. Braun; CAMPTODIUM, Fee ; OOCHLAMTYS, Fee; PACHYDEB- 

 BIS, J. Smith MS; LASTBEASTBUM, Presl ; PYCNOPTEBIS, Moore ; POLY- 

 PODII sp., Auct.; LASTK/K,-F. sp., Sory ; TECTABI.S sp., Cavanilles; PHE- 



eOPTBRIDIS Bp., Auct.; ABTHBOPTBBIDIS Sp., J. Smith; CYSTOPTEHIDIS, 



sp., Auct.; POLYSTICHI sp., Auct, 



Sori indusiate, globose; the receptacles medial, or rarely 

 terminal or sub-terminal on the venules. Indium roundish- 

 reniform, or sometimes small and irregularly reniform, plane or 

 fornicate, fugacious or persistent ; the basal sinus at which it is 

 affixed, variously deep narrow broad or shallow. Veins simple 

 forked or pinnate, from a central costa ; venules free, the anterior 

 usually (sometimes more) fertile. 



Fronds herbaceous or coriaceous, pedate pinnate or bi-tri- 

 pinnate, the fertile sometimes contracted. Ehizome short, thick, 

 erect or decumbent, or elongately creeping. We have, under 

 Potystichum, stated our reasons for adhering to the name adopted 

 for this genus by Presl and subsequently by J. Smith. It is an 

 extensive group, presenting no very definite characters for sec- 

 tional subdivision. The groups indicated below seem, however, 

 for the most part recognisable. We are little acquainted with 

 the Camptodium of Fee, but it seems to agree sufficiently 

 with Lastrea, as here understood. 



Dryopteris. Veins usually forked sometimes pinnate, the anterior 

 vennle fertile; son medial, or sub-terminal. 



Ex.: L. Filix-mas, Presl. 

 L. dilatata, Presl. 

 L. marginalia, Prel. 

 L. spectabilis, J. Sm. 

 L. rfabella, Movre If Houltt. 

 L. nispida, Houlstcm. 

 L. recedens, J. 8m. 



L. cochleata (Nephrodium, Don.} 



L. rigida, Preel. 



L. Goldiana, Presl. \_HooTc.) 



L. lta (Aspidium,Stt>.; A. Klotzschii, 



L. hirsuta (Nephrodium, Don.) 



L. athamantica, Moore. 



L. coniifolia (Aspidium, Watt.J 



Pycnopteris. Veins pinnate sub-clavate ; son in several series, infra- 

 medial on both anterior and posterior venules. 

 Ex. : L. atrata, Presl. \ L. Sieboldii (Pycnopteris, Moore J 



Camptodium. Veins pinnate ; sori terminal or medial on both anterior 



and posterior venules. 

 Ex. : L. pedata (Aspidium, Desv. ; Camptodium, Fee.) 



