FILICES. 99 



On ledges of rock. Rare and very local. In Carnarvonshire Clog- 

 wyn-y-Garnedd, and Llwyn-y-Cwm on Glyder Yawr (Mr. W.Wilson) ; 

 Pass of Llanberis, left-hand side, looking towards Capel Curig (Mr. 

 L. Clark) ; on Falcon Clints, Teesdale, Durham, now nearly or quite 

 extinct (Mr. J. Gr. Baker) ; in Westmoreland, on three different 

 mountains; and Cumberland (Messrs. T. Huddart and F. Clowes). 

 Abundant on steep crumbling rocks, on the hills dividing Dumfries 

 from Peebles-shire ; Ben Chouzie, Perthshire (Prof. Balfour) ; Glen 

 Fiadh, Clova mountains, Forfar (Mr. H. C. Watson). 



England, Scotland. Perennial. Summer, Autumn. 



Fronds ascending, annual, perishing in autumn, usually not 

 more than 2 or 3 inches high in British specimens ; but I have 

 one 5 inches long, from the Rev. W. Little, from hills north of 

 Moffat, and Norwegian ones, 6 or 7 inches, of which the stipes is 

 about half in the larger specimens, but in some of the smaller only a 

 quarter ; the extreme breadth is } to i the length : the specimens 

 with the longest lamina are narrower in proportion than those with 

 the lamina shorter. The frond is of a dull green above, with a 

 somewhat velvety texture, and ultimately more or less reddish 

 beneath, from the abundant scales and hairs, and hair-like segments of 

 indusium. Pinnas varying considerably in the degree of separation 

 between the lobes, which are sometimes reduced to crenatures. 

 Ultimate veins free. Sori near the apex of the ultimate veins, at 

 length confluent. Spores with a few large blunt tubercles. 



Oblong Woodsia. 



SPECIES (?) II.— W OODSIA HYPERBOREA. R- Brown. 



Plate 1863. 



Babenh. Crypt. Vase. Europ. Exsicc. No. 82. 



W. Arvonica, Milde, Fil. Europ. p. 161. 



W. alpina, Newm. Nat. Aim. 1844, p. 13 ; and Hist. Brit. Ferns, ed. iii. p. 79. Moore, 



Nat. Print. Brit. Ferns, 8vo ed. p. 283 ; and Handbk. Brit. Ferns, ed. iii. p. 251. 

 Acrostichum hyperboreum, Liljeblad, Stock. Trans. 1793, p. 201. 

 A. alpinnm, Bolton, Fil. Brit. p. 76 (1790). 

 Polypodium byperboreum, Sicartz. Sm. Eng. Bot, No. 2023. 

 P. Arvonicum, Sm. Fl. Brit. Vol. III. p. 1115. 



Caudex dividing into a few small crowns, which are closely packed 

 together. Stipes breaking off by an articulation a little below the 

 middle, reddish, with broadly lanceolate pale brown scales at the base, 

 and a few narrow and hair-like deciduous scales. Lamina linear-strap- 

 shaped or oblong-strapshaped, pinnate ; pinna? deltoid or deltoid- 



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