390 



pressed, fleshy, composed of two strata of cells near the base ; 

 antheridia in the axils of smaller leaves crowded in spikes. 

 Sporophyte a short-stalked oval capsule, 0.8 mm. long, en- 

 veloped until maturity in a thin calyptra; spores about 9// in 

 diameter. 



The type locality of Austin's plant was in the White Mount- 

 ains of New Hampshire ; that of Spruce's C. crassiflom in the 

 Pyrenees. It occurs on the mountains of New England and in 

 Canada, and according to Pearson extends westward to British 

 Columbia ; also reported from California [Hozvc). It is likely to 

 be confused with C. media on account of its thick perianth, which 

 in section is found to be made up of three strata of cells at base, 

 and two strata if the section is made higher up ; C. media is 

 smaller and dioicous, with strongly decurrent leaves and probably 

 has a much wider range in both latitude and altitude. C. pleiiiceps 

 is also reported from various parts of Europe. 



9. Cephalozia fluitans (Nees) Spruce, on Cephalozia, 50. 1882, 



Jjingermania flidtans Nees, in Syll. Ratisb. 129. 1823. 



Cephalozia obtusilobata Lindb. Bot. Notiser, 1872: 164. 1872. 



Gametophyte a slender elongate axis, growing over Sphagna 

 or semi-aquatic; leaves distant, oval, ovate or oblong, some- 

 what cuneate at base, bilobed one-third to one-half to the 

 base, with a narrow acute sinus and usually obtuse lobes ; leaf- 

 cells hexagonal, 40-50 ii in diameter: dioicous; perianth on a 

 short branch, about 3 mm. long, oval, cylindric, trigonal only at 

 the apex; involucral leaves rather smaller than the ordinary stem- 

 leaves, bifid to the middle, with acute lobes. Sporophyte an ob- 

 long or oblong-cylindric capsule, on a short seta ; spores minutely 

 tuberculate. 



Growing in wet places, in Sphagnum bogs or semi-aquatic in 



the margin of pools. New Jersey and New England to Labrador 



and northwestward. It has been distributed by Austin in Hep. 



Bor. Am. 35 (as Jungcrmannia inflata var. Jfiiitans) and in Hep. 



Amer. 154, 173. 



10. Cephalozia divaricata (Sm.) Dumort. Hep. Europ. 89. 1874. 

 Jiuigcrmatinia divaficata Smith, Engl. Bot.//. yig. 1800. 

 Jiingermannia byssacea Roth, Fl. Germ. 3 : 387. 1800. 

 Jungermannia confeivoides Raddi, Mem. Soc. Mod. 18 : 29. 



//. /j-.f. I. 1820. 



