Mosses and Lichens 



narrow and long, below, broader. Vein dilated at the base, ex- 

 tending below the apex. 



Habit of flowering. Male and female flowers together, (syn- 

 oicous). 



Spore-case. Pear-shaped or oval, yellow-brown, glossy, sym- 

 metrical, neck long. 



Pedicel. Red, slender, i to 2 inches long. 

 Lid (operculurn). Convex, with a tiny nipple. 



Teeth (peristome). Pale yel- 

 low, lance-shaped, segments of 

 the inner membrane keeled 

 and perforated; the thread- 

 like segments bearing little 

 knots on the edges. 



Annulus. - - Broad, rolling 

 back as the lid falls. 



Spores. Mature in May 

 and June. 



Distribution. Universal. 



L. pyriforme. 

 Apex of leaf. 



L. pyriforme. Plant 

 with pyriforme. 

 (See page 217.) 



Genus WEBERA, Hedw. 



The members of this genus 

 are similar to those of the 

 genus Bryum, the essential 

 characters which separate the 

 two are that Webera has rhom- 

 boidal-hexagonal, narrow, and 

 more or less linear leaf-cells 

 with a slender vein, while 

 Bryum has rhomboidal-hexa- 

 gonal, smooth, usually broad 

 and loose cells, with a solid, 

 round vein generally passing 

 beyond the apex of the leaf. 



The name was given by 

 J. G. Hedwig, a German bot- 

 anist, in honour of G. H. 

 Weber. 



218 



W. albicans. Stem. 

 (See page 220). 



L. pyrtforme 

 Annulus. 



W. nutans. Spore- 

 case. 



