280 MEESIACE^E. 



strongly papillose, the marginal rhomboid, projecting and forming 

 the serratures. Perichaetial bracts spreading, not recurved, 

 elongate-lanceolate. Seta reddish, 2-4 inches long; capsule oval- 

 oblong, slightly curved, from a rather short, not tapering neck, 

 greenish brown, smooth ; lid conical ; calyptra cucullate. 



Hab. Deep peat bogs, very rare and barren. Fr. summer. 



It is much to be feared that this beautiful and exceedingly interesting species is 

 now extinct in Britain, the two localities in which it formerly occurred, Terrington 

 Carr in Yorkshire and Knutsford Moor in Cheshire, having been altered by drainage. 

 In Scandinavia and Northern America it is common. 



65. AULAOOMNIUM Schwgr. 



Csespitose mosses, with ovate or oblong-lanceolate leaves, 

 with small rounded papillose areolation, each cell exhibiting a 

 large conical papilla in the centre of its face ; hrd.nch.es frequently 

 terminating in flagelliform pseudopodia, naked or with a few 

 minute leaves, and bearing a cluster of gemmse at the tip. 

 Capsule oblong or sub-cylindric, striate, slightly inclined or 

 curved. Peristome Mnioid, inner with long cilia. 



This genus is usually placed near to Mnium, but in peristome 

 it is not more closely allied to that genus than is Paludella, while 

 in the form of the fruit and in areolation it seems more at home in 

 the present Order. 



! Plant under 1 inch ; Is. serrate, basal cells unistratose, not distinct from the rest; 



i4 pseudopodia numerous ■■■■■3- androgynum 



[Plant larger ; basal cells bi-tri-stratose, swollen ; pseudopodia less frequent 2 



/Ls. obtuse, imbricate, entire ; stems without radicles 1. turgidum 



\Ls. usually toothed at apex ; stems matted with radicles a. pdlustre 



1. Aulacomnium turgidum Schwgr. (Hypnum turgidum 



Wahl.; Gymnocybe turgida Lindb., Braithw. Br. M. Fl.) 



(Tab. XXXIX. D.). 



In loose, bright or yellowish green tufts, pale below, not 

 tomentose, 3-5 inches high, slightly branched, turgid. Leaves 

 imbricated, when dry closely appressed, soft, widely obovate, 

 broadly rounded at summit, very narrow at base, concave, some- 

 what cymbiform above, margin refiexed half-way from the base 

 upwards, quite entire ; nerve narrowing upwards, ceasing below 

 apex ; cells below rectangular, a few rows at base brown, above 

 hexagonal-quadrate with sinuose walls and triangular intercellular 

 spaces ; small, smooth, or very faintly papillose. Capsule ovate- 

 oblong, slightly curved, striate, yellowish brown ; lid conical. 



Hab. Boggy places on mountains ; very rare and sterile. Fr. summer. 



