350 REVIEWS. 



not seen filix mas from Canada. We have found cristata in swamps 

 in several places, as at Woodstock, County of Oxford, C.W, Goldie- 

 ana has been found near Toronto. Marginalis, and in moist places 

 Thelypteris, are every where common. Noveboracensis is not very 

 uncommon, and we think it is a distinct speciea, 



Polystichum angulare is not common, Lonchitis is abundant at 

 Owen Sound, where Professor Hincks gathered it in 1 857, not 1 859,. 

 as stated by Dr. Lawson. Acrostichoides is found in moist woods, 

 and is one of our commonest ferns. We have lately seen a very re- 

 markable fern, exactly resembling a barren frond of Polystichum 

 Acrostichoides (to which species we have no doubt that it belongs,) 

 but in full fruit, without the contracted fertile portion, the sori being 

 on all the leaflets, not very close, and with the indusium approaching 

 the Lastraea form. We take this to be a mere anomalous in- 

 dividual, but it gives an instructive lesson on the variability of 

 some of our best characters. We have found Cystopteris fra- 

 gilis at Whitby, C.W., and we have Canadian specim^ens of var. 

 angustata, a very distinct form, though we believe rightly regarded 

 only as a variety. Cystopteris bulbifera is one of our handsomest 

 ferns, and very common in moist spots in woods. We gathered Wood- 

 sia ilvensis on Beloeil Mountain as long ago as 1848. The Osmundas 

 are all common. Botrichium Virginicum is very common in the 

 Toronto district. Lunarioides is also found. We have not distin- 

 guished B. obliquum, nor have we any evidence of the occurrence of 

 B. Lunaria in Canada."^ In the Lycopodium family we have found 

 all the species indicated by Dr. Lawson. We have the Isoetes from 

 the North of Lake Simcoe. Equisetum fluviatile, Linn, for which 

 Dr. Lawson adopts Ehrhart's name Telmateia, and Dr. Gray prefers 

 Schreber's name eburneum, is by no means common, though an un- 

 doubted Canadian plant. We can afiirm positively that the European 

 Equisetum palustre is a native of Canada, having found it five or six 

 years ago in a ditch near the river Don a few miles north of Toronto, 

 and being well acquainted with the plant from our English experi- 

 ence. f Equisetum sylvaticum grows finely and abundantly on the 



* Whilst passing this paper through the press, we have seen a fine Canadian 

 specimen of B. Lunaria, which settles the question. 



f Since this was written we have received a letter from a very zealous and 

 acute botanist, Mr. Macoun of Belleville, stating that amongst plants sent by 

 him to Sir W. J. Hooker, Equisetum palustre was found ; it is therefore certain 

 that this plant grows as far south as the northern shore of Lake Ontario, and 

 it becomes very probable that Pursh had seen it in the Northern United States. 



