371 



Sp. Ps. alpestre = Pol. alpestre, Hoppe, and about fifteen ascer- 

 tained exotic species. 



Genus. — Lophodium. 



Pinti. V. pinnul. venis lateral, plus minusve ramosis apice liberis, 

 ramo antico capsulifero : sorts rotundis in ram. capsulif. dorso 

 sitis : involucro suhcirculari, complanato, ohliquo, anticd elevato, 

 posticd depresso emarginato adhcerenti, marginibus liberis, sinuatis, 

 scepiiis glanduliferis : pinnul. lobis ultimis cristatis, i.e. dente vix 

 spinoso armatis. 



Sp. Lo. recurvura, Lo. multiflorum, Lo. glandiferum, Lo. spinosum, 

 Lo. uliginosum, Lo. Callipteris, cum multis aliis = Polypodiuin cris- 

 tatum, Linn. ; Aspidium dilatatum, Sw. ; Asp. spinulosum, Hook, 

 olim. Lastveae species, Presl, J. Sm., Newm., Bab., non Borg. 

 There are about sixty exotic species. 



The name of Lastrea should never have been applied to species 

 which were neither included by the author, nor comprehended in his 

 description. The cormus, or rhizoma, in this genus is always large, 

 massive, long-enduring, and of slow growth. 



Genus. — Gymnocarpium. 



Pinn. V. pinnul. venis lateral, plus minusve ramosis apice liberis, 

 ramis omnibus capsuliferis : soris rotundis, primum distinctis, deni- 

 que approximatis, contiguis, conjluentibus in ramorum dorso sitis : 

 involucro nullo. 



Sp. Gy. Phegopteris, Gy. Robertianum, Gy. Dryopteris, &c. = 

 Pol. Phegopteris, &c., Linn., &c. Lastreae species, Borg, Newm., 

 non Presl, nee J. Sm. There are about thirty exotic species. 



The rhizoma in this genus is simply a stolon, slender, of rapid growth, 

 and extremely perishable. There is no cormus, or even representative 

 of cormus, unless the stolon can be thus considered. The stipes ad- 

 heres to the stolon, not being articulated thereto, falling off and leav- 

 ing a scar, as described by myself in Polypodium vulgare. 



I need scarcely say, that the numerous announcements crowded 

 into this short communication, have, for their principal object, the 

 suggestion, not the imposition, of change ; and that I shall feel deeply 

 indebted for any alteration, correction, modification, or addition that 

 may occur to any of my readers; and, also, that the more prompt, the 

 more acceptable will be such alteration, because I may thus be saved 

 the repetition and extensive diffusion of error in the forthcoming edi- 

 tion of the ' British Ferns,' which is now in the press. 



Edward Newman. 



