Copy 1

A history of British ferns / By Edward Newman, F.L.S.

  • Edward Newman
Date:
1840
Catalogue details

Licence: Public Domain Mark

Credit: A history of British ferns / By Edward Newman, F.L.S. Source: Wellcome Collection.

    57/154 (page 17)
    ROCK BRAKES. ALLosorus Crispus.—Bernhardi, Sprengel, Sadler, Presl. Osmunda Crispa.—Linneus, Hudson, Lightfoot, Bolton, Berken- hout. Onoclea Crispa.—Roth. Phorobolus Crispus.—Desveux. Cryptogramma Crispa.—Brown, Hooker, Mackay, Francis. Pteris Crispa—Smith, Withering. Stegania Onocleoides.—Gray. LOCALITIES. EnGLanp... Abundant on themountains and about the lakes of Cumberland and Westmoreland ; more sparingly on the mountains of Yorkshire and Lancashire. DARGIS «5 3 3. Abundant on the mountains of Caernarvonshire; sparingly on Cader Idris; on Plinlymmon; on walls near Llyn Tregarien, Dolgelly, Tan-y-Bwlch, Aberglaslyn, Beddgelert, and Llanberris. ScoTLAND... Mountains of Aberdeenshire, Argyleshire, Perthshire, &c. but not abundantly. IRELAND... . Mourne Mountains, county Down; Liberties of Carrickfergus, county Antrim. ROR eee, For separating this species generically from the three follow- ing, Iam unable to assign any better reason than that every author has considered it distinct; it has by three eminent botanists been made the type of a new genus; viz. by Bern- hardi, under the name Allosorus; by Desveux, under the name Phorobolus; and by Brown, under the name Cryptogramma. The name I have adopted has the claim of priority. The only characters distinguishing this plant from our British Polypodia are, that the fronds are both fertile and barren, and that the margin of the fertile pinnula is reflexed, covering the masses of thecze. In a few species, nearly allied to A. crispus, the masses of thecze are linear. 7 The root is fibrous, the fibres very numerous and tough, and tenaciously adhering to the earth or stones: the rhizoma is dark brown, and extends itself horizontally, but very slowly; and the plant, without a careful examination, appears to be tufted. C