(i25) 



cells sometimes pitted. Capsule with. lid up to 2.5 mm. long. 

 Sporangium oblong, scarcely or not contracted below mouth 

 and rather abruptly narrowed when dry to the shorter col- 

 lum. Peristome yellowish below, the lower plates of teeth 

 mostly twice wider than high, gradually becoming nearly 

 square above; lamellae 16-18, irregularly connected by 1—3 

 cross walls between adjoining lamellae; segments narrow 

 and narrowly perforated, separated by mostly 2 cilia, a little 

 shorter and often long appendiculate. Annulus broad, of 3 

 rows of cells. About 3 rows of transversely elongated cells 

 about mouth of capsule, the cells near middle becoming some- 

 what rectangular and in collum scarcely elongated and sin- 

 uous walled, with oblong stomata about .040 mm. long. 

 Spores smooth or nearly so, up to .025 mm. (Plate 17.) 



Dawson, on damp earth. In good fruit Aug. 28, 1898. 

 This plant is undoubtedly close to pendulum differing in the 

 short pointed leaves, more distinct^ bordered and in the long 

 cilia, some of which are finely appendiculate (585). 



M. Philibert left me in doubt as to just what he considered 

 this plant and I have finally ventured to describe it as a dis- 

 tinct species rather than a variety of pendulum. 



Bryum longisetum Bland. Dawson. In good fruit July 

 31, on swampy ground with Meesea uliginosa. These 

 specimens have a seta up to 8.5 cm. high. The teeth are 

 small with only about 12 lamellae not joined by cross walls, 

 the dorsal plates high (about 1 to 2). Inner peristome free 

 with narrow segments and very short cilia. Spores large 

 and nearly smooth, up to .040 mm. Leaves long-pointed, 

 costa excurrent for a length of 4 or 5 cells (649). 



Bryum conditum R. S. Williams, sp. nov. 



Dioicous. Male plants discoid. Tufts up to 3.5 cm. 

 high. Stems and branches more or less radiculose. Outer 

 penchaetial leaves oblong-lanceolate, with a gradually nar- 

 rowed base, up to 4.5 mm. long. Upper stem leaves a 

 little shorter with broader base, all entire, with costa 

 excurrent for a length of 3 or 4 cells and a brown revolute 

 border of thick-walled cells in double layer, confluent with 

 the costa. Lower stem leaves much smaller with costa van- 

 ishing. Inner perichaetial leaves very broad, the width very 

 often & equal to J, or more, of the length and costa percurrent. 



