1864.] LAWSON ON CANADIAN FERNS. 287 



13. angustata. — Pinnules incised, with longish and spreading teeth. 

 Cyst. frag. var. cynapifolia, J. Lowe. — Gasp^, John Bell, B.A. 

 Specimens referable to this form were likewise gathered at Lake 

 of Three Mountains by Mr. D'Urban. Mr. Bell's specimens 

 agree perfectly with English specimens from Dr. John Lowe 

 (t7./. cynapifolia). Italian specimens from Profess-or Caruel of 

 Pisa, labelled " Cyst./ragiUs," belong to this variety. Mr. Bell 

 has a fertile frond from Gasp^ with very broad veiny pinnae, 

 deeply incised, but not pinnate. 



C. hulhifera, Bernhardi. — Frond thin, green, lanceolate or linear- 

 lanceolate, bipinnate, bulbiferous towards the apex on the under 

 surface ; pinnae oblong-lanceolate, narrowed at the tips ; pinnules 

 oblong-obtuse, incisely toothed; sori small, not very numerous; in- 

 dusium short. Very variable in the size and form of the frond. G. 

 hulhifera, Bernhardi, A.Gr., J. Sm. ; Aspidium hulbi/erum, Swartz, 

 iSchk., Pursb. Aspidium atomainimi, Muhl. — Moist, swampy 

 woods about Kingston, as Collins's Bay, Kingston Mills, &c. ; 

 abundant on Judge Malloch's farm, a mile west from Brockville • 

 Petit Portage, &c., Gasp^, John Bell, B.A. ; Wolfe Island, A. T. 

 Drummond, B.A. ; Mirwin's woods, Prescott, common, B. Bil- 

 lings, jun. (short form); Beloeil Mountain, P.W. Maclagan, M.D. ; 

 rocky banks of the Moira, Belleville, and in cedar swamps and 

 wet woods, very common, J. Macoun ; Bamsay, Bev. J. K. M'Mo- 

 rine, M.A. ; Mountain side, Hamilton, common. Judge Logie; 

 Black Lead Falls, on limestone rock, W. S. M. D'Urban ; Foot 

 of Cape Tourmente, Abbe Provancher ; Grenville, C. E., J. 

 Bi 11 ; London, W. Saunders. There are two distinct forms or 

 varieties of this species. 



a- horizontalis. — Frond triangular-lanceolate, broad at base, not 

 more than three or four times longer than broad ; pinnae horizon- 

 tal. Niagara Falls, within the spray, Collins's Bay, &c. 



(3. fiagelliformis. — Frond linear, attenuated upwards, very 

 long and narrow, six or seven times longer than broad ; pinnae 

 less horizontal. Frankville, Montreal, Gaspe, &c. 



Dennst^dtia. 



D. punctilohulay Moore. — Frond broadly lanceolate, pale green, 

 thin, with a stout rachis, bipinnate ; the pinnules pinnatifid ; sori 

 minute, usually one on the anterior basal tooth of each lobe of 

 the pinnule, which is reflexed over the sorus ; the proper indusiiim 

 is pale, cup-shaped, opening at top. Bhizome slender, creeping 



