276 Synojjsis of Canadian Ferns and Filicoid Plants. 



It has the same relation to the type of L. marginalis which incisa 

 ierosa) has to typical Filix-mas. 



Lastrea Filix-7nas is erroneously referred to in some American works 

 on Materia Medica as a common North Am.erican and Canadian fern. 

 It has recently, however, been found on the Eocky Mountains by Dr 

 Parry. Professor Gray says that Dr Parry's specimens are apparently 

 identical with the European plant. Nothing like it occurs in Canada, 

 so far as I can ascertain. Varieties of L. marginalis have been sent 

 to me under the name of Filix-mas. 



L. cristata, Presl. — Fronds erect, rigid, linear-oblong in outline, vivid 

 green, pinnate or slightly bipinnate; pinnss triangular-lanceolate; pinnules 

 large, oblong, approximate, decurrent ; sori large, in a single series on 

 each side of, and near to, the vein ; stipe with few pale scales. Lastrea 

 cristata, Presl, Moore, &c. Polypodium cristatum, Linn. Aspidium 

 cristatum, Swartz, Willd., Pursh, E. B., Beck, Torrey Fl. N. Y., ii. p. 

 496, Gray. Aspidium cristatum, /3. lancastriense, Torrey ; A. lan- 

 castriense, Spreng., Bigelow, Beck, Darlington, Hooker. — Woods around 

 Kingston ; near the Peche River, Gatineau, a tributary of the Ottawa, 

 D. M'Gillivray, M.D. ; Three Rivers, St John's, and Chippawa, P. W. 

 Maclagan, M.D. ; Sproule's Swamp, east from Belleville (a cedar swamp), 

 not common, J, Macoun ; Ramsay, Rev. J. K. M'Morine, M.A. ; Prescott, 

 common, B. Billings, jr. ; Lake of Three Mountains, W. S. M, D'Urban; 

 Silver Brook, Gaspe, John Bell, B.A. ; St Ferreol, M. I'Abbe Pro- 

 vancher; L'Orignal, J. Bell; London, W. Saunders. 



L. Ooldieana, J. Smith. — Frond very large (3 or 4 feet or more in 

 length), dark green, bipinnate ; pinnae 6 to 8 inches long, narrow, linear- 

 lanceolate, not much attenuated towards the tips ; pinnules (12-20 pairs), 

 linear-oblong, approximate, uniformly curved forwards, scythe-shaped, 

 sometimes with an extra lobe at base ; sori small, near the midrib ; 

 stipe with pale shaggy scales above and larger dark-centred ones 

 below ; our largest Canadian fern, usually barren. Lastrea Goldieana, 

 J, Smith. Aspidium Ooldieanum, Hooker, Edin. New Phil. Jour. vi. 

 p. 333, and Fl. Bor. Am,, ii. p. 260, Gray, Nephroditim Goldieanum, 

 Hook, and Grev. Aspidium Filix-7nas, Pursh, not of Willd., &c.— Far- 

 mersville, in woods near the village, abundant and very fine, forming 

 immense tufts ; near Hamilton's Farm and De Salaberry, town line, 

 W. S. M. D'Urban ; Beloeil Mountain, Montreal and Maiden, P. W. 

 Maclagan, M.D. ; Belleville Woods, near Castleton; woods below Heely's 

 Falls, west side, and in Simon Terrill's Woods, Brighton, J. Macoun. 

 Augusta, Robert Jardine, B.A. ; about Montreal, Mr Goldie in Hook. 

 Fl. Bor. Am. London, W. Saunders. This fine fern was appropriately 

 named by Sir William Hooker in honour of its discoverer, a successful 

 investigator of Canadian botany, now resident at Paris, C.W. The 

 species belongs exclusively to the American Continent. In Canada we 

 have two sub- varieties : — 



a. serrata, in which the divisions of the pinnse are coarsely serrate. 

 Montreal, 



/S. integerrima, in which the divisions of the pinnae are almost or 

 quite entire. Farmersville. 



L. fragrans, Moore.™ Frond 8 to 12 inches long, coriaceous, bipinnate, 



