No. 5.] GOODE — CANADIAN FERNS. 301 



part, having a form somewhat ovate-lanceolate in the smallest 

 plants, more lanceolate in the medium, and ternate and triangular 

 in the largest] and most matured one. The smallest specimens 

 have the sterile segment pinnatifid into from 3 to 7 rounded 

 oblong, or obovate-obtuse lobes, which are mostly entire ; the 

 medium plants are 11-lobed, obvate or sometimes ovate and 

 more deeply-pinnatifid, crenate or bluntly-toothed. The most 

 matured plant has the sterile segment deltoid in form with one 

 upper and a pair of side divisions ; the latter are spreading, and 

 narrowly lanceolate in form, with a few remote, lanceolate, or 

 oblong, deeply cut in-curved lobes, which are represented in the 

 top divison by small teeth. 



Venation is indistinct in the smallest plants, but the medium 

 and largest ones have a continuous midvein in the rachis of the 

 sterile segment, from which lateral veins ascend and finally diverge 

 and branch into the side lobes or divisions, the veins themselves 

 being either simple or forked. Fertile segment simple in the 

 small plants and bearing about 12 capsules, medium plants pin- 

 nate, bipinnate or forked, and in the largest plant resembling a 

 two branched panicle. 



'' Sterile segment thin in texture and light-green. My plants 

 were collected in a damp deep wood, near Magog, on the 20th of 

 August last, when they appeared to be at their prime. 



Ophioglossum vulgatum, Linnaeus. — This species was found 

 near Hemmingford, rather plentifully distributed in a peaty bog. 

 It appears to be identical with the ordinary American type 

 described by Professor Gray. 



Sterile segment ovate or elliptical-oblong, about two inches 

 long, obtuse, narrowed at base, and sessile below the middle of 

 the common stalk, with reticulated veins, Length 7 to 10 inches ; 

 color yellowish-green. 



