200 CYSTOPTERIS. 



Quebec and Montreal. It is a most distinct species, with rather a stout, 

 glossy, pale-coloured stipes and rachis, a remarkably elongated frond (some- 

 times 2 feet or more long), the pinnae short, spreading horizontally, fre- 

 quently opposite, and the pinnules again spreading at right angles, or nearly 

 so, with their rachis, and that rachis often producing large, dark green, 

 fleshy bulbs beneath, especially near the axil, which are well represented 

 in Schkuhr. 



5. C. montana, Link ; fronds triangular short on a long 

 stipes tripiunate, pinna3 and pinnules spreading ultimate pin- 

 nules narrow oblong inciso-dentate or pinnatifid, the seg- 

 ments toothed at the apex, rachis not toothed, involucre sub- 

 rotund very obtuse. — Aspidium, Sw. Willd. Sp. PL v. p. 286. 

 Scltkh. Fil. p. 61, t. 63, [excellent). Polypodium, Haenke. 

 P. myrrhidifolium, VilL Delph. iii. p. 851, t. 53. 



Hab. Alps of the middle and south of Europe, but more frequent in the 

 north, in Lapland, and in Norway very abundant. Only a single station 

 has been discovered of it in Britain ; on Ben Lawers, one of the Breadalbane 

 mountains in Scotland, Mr. Wilson. Kocky mountains in N. America, 

 Dmmmond. — A species well distinguished by its small triangular fronds 

 and long stipes. The caudex is long, creeping, filiform, scaly, the stipes 

 red-brown, scaly below. 



6. C. crenata, Fries ; " fronds triangular tripinnate, pin- 

 nules oblong obtuse subduplicato-crenate hairy beneath to- 

 wards the apex acute confluent by the decurrent base, sori 

 oblong, stipes chaffy." — Fries, Novit. Ft. Siiec. p. 165. As- 

 pidium crenatum, Sommerf. in Vet. Ac. Handl. 1834, p. 104. 



Hab. Gulbrandsdal, Sweden, Sommerfelt. — " Very rare, and a most dis- 

 tinct species of this genus, differing in the form of the sori nearly as Aspi- 

 dium Filix-fcemina does from its congeners. A soft, delicate, marcescent, 

 pale green Fern, 2 feet high. Stipes slender, fragile, glabrous, paleaceous, 

 with blackish brown distant scales. Frond more than a foot long, triangu- 

 lar ; primary and secondary pinuEe elongated, the outermost ones diminish- 

 ing in size, thence acute. Rachis of the pinnules winged. The sori upon 

 the lateral nerves oblong, lunate according to Sommerfelt, the indusium 

 opening laterally." Fries. — 1 have reason to think I possess copious speci- 

 mens of this Fern, with the fructification too young to determine the genus: 

 from the above description however I should have taken it to be an Athy- 

 riuin of Presl. 



7. C. Douglasii, Hook. ; fronds rather small oblong-lan- 

 ceolate firm pinnated, lower pinnae broad ovate acute pin- 

 natifid, the segments broad-oblong obtuse dentato-serrate, 

 uppermost ones oblong rather obtuse dentato-pinnatifid de- 

 current and coadunate, sori rather large, involucre broad 

 roundish much reflected and concealed by the enlarged sorus. 



Hab. Sandwich Islands, D. Douglas, n. 51, of sets distributed by the 

 Horticultural Society of London. — I have only seen three specimens of this 

 plant, without caudex : the largest of them not a span high. Stipes short, 

 naked. Frond firm and rather rigid, approaching to coriaceous, of a dark 



