154 BALL THE INDIGENOUS FERNS OF NOVA SCOTIA. 



common. One specimen of this fern found at Rawdon (Rev. E. 

 H. Ball) had between 12 and 20 pinna? on each frond bifurcated. 



Aspidium aeuleatum, var. Braunii. (Rock.) One of our 

 choicest evergreens. It is of very graceful form and very hardy. 

 But it is rare even where local in Nova Scotia. Its known habitats 

 are Marble Mountain, Bras d 'Or Lake, (Prof. How, D.C.L., 18 ) 

 Sherman's Mountain, Port Mulgrave, Strait of Canso ; Elder's 

 water-fall, near Guysborough, (Rev. E. H. Ball, 1867), at the 

 latter habitat it is not 20 feet above sea level, though growing high 

 up the ravine, also Hills above Mabou, C. B. 



Oystopteris buXbifera. fBernh.) Perhaps the most delicate as 

 well as at least one of the most rare of our indigenous ferns. The 

 only known habitat fur it at present is the famous rock already 

 spoken of in connexion with aspid. fragrans and aspl. trichomanes, 

 where it grows most luxuriantly within the spray of the little fall. 

 Some of the fronds are upwards of three feet in length. Gray's 

 Manual speaks of it as common in the Northern U. S., and Dr. 

 Lawson's Synopsis gives a good number of habitats for CanadaWest. 



Oystopteris fragilis. (Bernh). Also a delicate fern; gene- 

 rally distributed through the province, though not common. It is 

 to be found on rocky river-banks and in shaded ravines. Habs. — 

 Springville and West River, (Prof. McKay, B. A.), Clam Harbour 

 River, near the bridge ; Broad Cove fall, Ehler's fall, Atwater's fall, 

 last 4 habs. near Guysborough. (Rev. E. H. Ball). 



Struthiopteris Germanica. (Willd.) Already referred to in 

 the introduction. Not common in Nova Scotia. Habs. Pictou, 

 (Prof. McKay, B. A.); home field of Styles Hart, Esq., J. P., 

 near Guysborough ; head of mill pond, between Waterville and 

 Ealmouth, Hants County ; side of old corduroy road, between 

 Windsor and Brooklyn, Hants Co. ; brook-side, near the Church at 

 Rawdon, Hants Co. ; (last 4 habs. Rev. E. H. Ball.) 



Onoclea Sensililis. ' (Lin.) Quite common in swamps and 

 wet places, and to be ranked amongst the delicate looking ferns of 

 our province. 



Woodsia obtusa. (Torr.) One of our rarest ferns, the only 



