The Sub-genus Brachythecium 



Habit of flowering. Male and female flowers on one plant 

 (monoicous*) . 



Veil (calyptra). Split up one side. 



Spore-case. Abruptly horizontal, short egg-shaped, dark red- 

 brown, black when old. 



Pedicel (seta}. Rough, red-brown, 

 i to \}i inches high. 



Portion of peristome show- 

 ing two outer teeth on the left 

 with annulus cells at the base, 

 two keeled and perforated cells 

 with cilia are seen at the right. 



Psolccel 



ewcule Branch 



Spore-case Plant w ith f emale branch 

 with peri- on the left and male branch 

 stome. on the right. 



Brachythecium Starkii. 



Leaf. 



Lid (operculum). Convex, conical, tipped with a short, sharp 

 point. 



Annulus. Large, of about two rows of cells. 

 Teeth (peristome). As in the genus. 

 Spores. Chestnut, maturing in autumn and winter. 

 Distribution. In the northern United States and Canada, 

 across the continent, south to New Jersey; Europe. 



Brachythecium Novse-Angliae, (Sull. & Lesq.) Jaeger & 



Sauer. See Plate XXV. 



Habit and habitat. On earth and 

 stones. 



Name. The specific name is the 

 Latin for "New England." 



Plant (gametophyte). Forming 

 loosely entangled mats; stem i^ to 2 

 inches long, irregular; branches cylin- 

 drical, with rather short, overlapping, 

 slightly spreading leaves. 



Leaves. Erect, spreading, some- 

 times very concave, not plaited, 

 not glossy, incurved, broadly ovate, 

 287 



F emale plant. Male plant. 

 B. Novce-Anglice. 



