2 GEOLOGICAL SURVEY OP CANADA. 



(not of equal size), and in the margin of the under leaves being uni- 

 dentate near the middle, from Frullania fragilifolia Tayl. in being 

 monoicous, and in the irregularly ciliate-dentate lobule of the bracts, 

 which has a large segment near the middle. 



Measurements. Fronds ^ to inch long, '5 to '75 mm. wide, stem 

 1 m. diam., leaves *4 mm. long x -3 mm. broad, '3 mm. x -25 mm., 

 lobule "15 mm. high x ! mm. broad, cells '02 mm. x '015 mm. '015 mm. 

 x '015 u.m., underleaves '1*75 mm. long x -15 mm. broad, sinus -05 

 mm., '2 mm. x .1*75 mm., sinus *05, -25 x -15 mm., lobule '45 mm. long 

 x -225 mm. broad at the base of the juncture, bract lobe - 75 mm. long 

 x *4 mm. broad, lobule -6 mm. long x -25 mm. broad, -85 mm. x -35 

 mm. lobule *75 mm. x -45 mm. 



Description of PI 1. Fig. 1. Plants nat. size. 2. Plant x 24, an- 

 tical view. 3. Portion of stem x 64, postical view. 4. Portion of leaf 

 x 290. 5-7. Underleaves x 64. 8. Bract x 64. 9. Bract x 31. 10. 

 Second bract x 64. 11. Bracteole x 31. 12. Perianth x 31. 13. 

 Cross- section of the perianth x 31. 



2. Frullania Virginica, Gottsch. 



Hab. New Brunswick. (James, Herb. Austin, cum per.} Hastings 

 Co., Out., May, 1868. (Macoun, Herb. Austin.) 



3. Frullania Hallii, Aust. Bull. Torrey Bot. Club, 6, n. 2, 1875. 

 Hab. On trees, Vancouver Island, May, 1875. (Macoun.) 



4. Frullania Eboracensis, Gottsch. 



Hab. On trees, at Belleville, Ont., 1868 (18-35). On fir trees in 

 woods, Gaspe*, 1882 (8). On birch trees, Ste. Anne's Eiver, Gasps', 

 c? et 9 cum per., August, 1882 (12). Ottawa, 1883, cum per. (246-228- 

 252). On birch trees, Truro, Nova Scotia, June, 1883 (172). On rocks, 

 Lake Nipigon, July, 1884 (9). On poplar bark, Vancouver Island, 

 May, 1887 (22). On rocks, V. I., May, 1887 (228). (Macoun.) 



Obs. Several forms are in the collection, but as the characters are 

 more or less variable in the different organs on the same stems, I have 

 not thought them worthy of ranking even as varieties. In the draw- 

 ings taken under the prism are given several figures showing this. 



In one compact form the perianths were often more rotund with the 

 lobule of the bract obtusate (fig. 8-9-10), in another, the perianth was 

 slightly keeled antically (fig. 17), and almost bicarinate postically 

 (fig. 16-17), and some lobules of the bracts uni-bidentate at the base 

 (fig. 14). 



