108 HANDBOOK OF BRITISH MOSSES. 



that of Schimper's genus Amblystegium, The sinuated pri- 

 mordial sac of which he speaks is visible principally in the 

 dilated rhomboidal cells at the base. I do not see any chloro- 

 phyll-grains, 



B. Stem erect, pinnate ; fruitstallcs from upper part of stern. 



Dioicous. 



* Leaves nerveless or two-nerved, entire. 



50. H. cuspidatum, L. ; stem suberect ; branches bifarious, 

 pinnate, cuspidate ; leaves crowded, erecto-patent, ovato-ob- 

 long, attenuated, rather obtuse, entire, nerveless; fruitstalk 

 even ; sporangium oblong, curved, cernuous, tapering below ; 

 lid conical. — Hook. 1$ Wils. t. xxvi. ; Eng. Bot. t. 1425. ; 



(Plate 8, fig. 1) ; Moug. 1$ Nest. n. 227. 



In moist meadows and marshes. Common. Bearing fruit 

 in early summer. 



Dioicous; forming tall, yellowish-green or reddish-brown 

 tufts. Stem rather rigid, erect with a few bifarious pinnate 

 branches, which are cuspidate from the convolution of the 

 upper leaves; leaves imbricated, erecto-patent, ovato-oblong, 

 attenuated but rather obtuse, concave, nerveless; reticula- 

 tion narrow, except at the clasping base; perichsetial leaves 

 large- celled, deeply plaited, acuminate, with two short nerves 

 according to Schimper; fruitstalk even, elongated ; sporan- 

 gium oblong, slightly curved, cernuous, much attenuated at 

 the base, variegated; lid conical, pointed. 



Easily known from neighbouring species by its nerveless 

 leaves. 



51. H. Schreberi, Willd. ; stem rigid, erect, irregularly 

 divided; branches pinnate; leaves crowded, imbricated, sub- 

 erect, ovato-oblong, concave, obtuse, entire, faintly two-nerved 

 at the base ; sporangium ovato-oblong, curved, cernuous ; lid 



