MOSSES WITH A HAND-LENS 



95 



rtr 



FIGURE 39. a, Bartramia pomiformis XL b, B. Oederi XL c, 

 -Capsule of B. pomiformis X 10, and e, Mouth of same with operculum. 

 d, Capsule of B. Oederi X 10. f and g, Leaves of B pomiformis and B. 

 Oederi respectively X 10. 



B. OEDERI (Gunn.) Swartz., the Short-leaved Bartramia. 

 The Long-leaved Bartramia is common throughout our range 

 whenever the country affords a suitable habitat, but the Short- 

 leaved Bartramia is rather rare. The difference between the 

 species as shown in the figures is so marked that they cannot be 

 confused. 



Both species mature their capsules in spring; the Long- 

 leaved Bartramia in April or early May, and the Short-leaved two 

 or three weeks later. 



PHILONOTIS. 



P. FONTANA (L.) Brid. is the only species of Philonotis 

 likely to be met with, is very common where water drips or runs 

 in shallow streams over rocks. When in fruit it may be 

 mistaken for a Bartramia on account of the similarity of the 

 capsules. The capsules of Philonotis, however, have a protuber- 

 ance on the lower side that is entirely lacking in Bartramia. 



Philonotis grows in much wetter places, has much longer, 

 more slender stems that are often fasciculately branching at the 

 top ; shorter, more acute leaves, and is dioicous. The male heads 

 are conspicuous objects among the fruiting plants, though sel- 



