IxxXViii. GEJTEBA OP PEEKS ; 



in part : Fie ; Nbphkodiitm:, Mickm-d in part : Auct. ; Thbltptbbis, 

 Schott; Abtebobotbts, WalUch; Hy70i)EiLA.Tiii&r, Kunze; Aj£aubo< 

 PELTA, Kunze ; Aesbhoptbeis, Wehb et Berthelot in part ; ELemistheum, 

 Newman; Lophoditjm, Newman; GyMyoTHAi.iJfitri^ Zenker MS; Di- 

 c^ASLTJM, A. Brawn; CAMPTonnrs^ JVs; Oochlastts, Fee; Pachtdbb- 

 ^1% J.Smith MS; Lastbkastbum, Pre«Z ; Ptcn optebis, 3foore ; Polt- 

 poDn sp., Auct.; JjkSTRMM sp^ Bory ; Tectabi^ sp., CavanUles; Phe- 

 eopTEBiDis sp., Auct. ; Abthbopteb£dis 6p., J. Smith ; Cystoptebisis, 



6p., Auct.; PoiTSTICHI Sp., Auct. 



Sori indasiate, globose; the receptacles medial, or rarelj- 

 terminal or sub-terminal on tbe venules. Indusiu/m roundigh* 

 reniform, or sometimes small and irregolarlj reniform, plane or 

 fornicate, iiigacions or persistent ; tbe basal sinns at which it is 

 a£ixed, variously deep narrow broad or shallow. Veins simple 

 forked or pinnate, fi:om a central costa ; venules &ee, the anterior 

 usually (eometLmes more) fertile. 



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

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

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

 Polystichmrhy 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 CaTnptodium of Fee, but it seems to agree sufficiently 

 with Lastrea, as here understood. 



§ Dryopterix, — Yeins nsnallj forked Bometimes pinnate, the anterior 

 venule fertile; sori medial, or enb-terminal. 



Ex. : L. FOix-mas, Fred, 

 L. dilatata, Freal. 

 L. marginaliSj Pretl. 

 L. spectabUis, J. Sm. 

 L. glabella, Moore if Soulst. 

 L. hispida^ SouUton. 

 L. recedens, J*. 8m. 



L, cochleata (Nephrodium, Don.J 



L. rigida, Fresl. 



L. Goldiana, Presl. [Sook.J 



L. Ista (A^idimn,;9w.; A.ElotzBclm, 



L. hirsnta (Nephrodium, Don.) 



L. athamantica, l£o<^e. 



L. coniifolia (Aspidimn, WaU.) 



§ Pycnopteris. — ^VeinB pinnate snb-clavate ; flori in several series, infrsp 

 medial on both anterior and posterior venoles. 

 Ex. : L. atrata, PresU \ L. Sieholdii (Pycnopteris, Moore.) 



§ Camptodiun. — ^Veinfi pinnate ; sori terminal or medial on both anterior 

 and posterior renules. 



Ex. : L. pedata (Aspidinzn, Degv. ; Camptodinm, Fee,) 



