BRYUM. 325 



they are compact, rigid, and brittle. The brilliant rosy tint which often renders the 

 tufts very conspicuous is always lost in drying. The capsule much resembles that of 

 B. uliginosum, but is usually shorter and rather broader, with a wider, not oblique 

 mouth and lid. In rare cases it is suberect and cernuous, resembling that of Funaria. 

 The peristome is occasionally imperfect, as in B. fallax. 



B. Duvalii differs in the wider leaves of softer texture, more distant, more widely 

 and strongly decurrent, with almost plane, not thickened, margins and shorter nerve. 

 Bryum turbinatum is known by the leaves less decurrent, and the very differently 

 shaped capsule. 



The var. speciosum is a very distinct form, resembling B. turbinatum var. 

 latifolium, but differing in the less concave and cucullate apex of the leaves, and the 

 more excurrent nerve. 



It may be remarked that here, as in B. Donianum, the border of the leaves is 

 more distinct and clearly defined, even when viewed on the face and without making 

 a section, than is the case with the species having non-thickened borders. 



12. Bryum Duvalii Voit (Tab. XLIII. K.). 



In very lax soft tufts, resembling the more slender, looser 

 forms of B. pattens, pinkish green. Leaves very distant, when 

 dry shrinking and flexuose, cordate-ovate, or widely ovate- 

 lanceolate, longly and widely decurrent, lower obtuse, upper 

 shortly pointed, nerve reaching almost to apex or ceasing some 

 distance below ; margin almost plane, entire ; cells wide, short, 

 hexagonal-rhomboid, of soft texture ; the marginal in about two 

 rows of narrow cells, forming an indistinct border. Capsule 

 pendulous, oblong-clavate, yellowish-brown. Dioicous. Male 

 flower sub-discoid. 



Hab. Springs on mountains, rare ; sterile in Britain. Fr. late summer. 



A very marked species, readily known by its distant, widely and strongly 

 decurrent leaves, giving the stems the appearance of being winged. Webera 

 Ludwigii var. latifolia and W. albicans var. glacials have some resemblance to it ; 

 the latter however has bright red stems and pale green leaves, denticulate above and 

 all somewhat acute, and hardly decurrent ; in the former the leaves are much closer, 

 more rounded, of much firmer texture, slightly denticulate and with the margin more 

 recurved. 



13. Bryum cyclophyllum B. & S. (Mnium cyclophyllum 



Schwgr.) (Tab. XLIV. A.). 



Pale bright green, in loose, soft tufts, stems short with 

 slender branches. Leaves distant, small, the comal rather 

 larger, few in number, variously spreading, not or scarcely 

 decurrent ; when dry curled ; all broadly obovate or suborbicular , 

 concave, obtuse, slightly cucullate, entire ; nerve thin, vanishing 

 below apex ; cells wide, soft, hexagonal-rhomboid, marginal in 

 1-2 rows, elongated, narrow, forming a weak border. Capsule on 

 a rather short seta, shortly pyriform, pale, wide at the mouth and 

 contracted below it. Cilia appendiculate. Dioicous. 



