BY L. RODWAY. 17 



Very common on rocks and earth. Variable in robust- 

 ness of detail, upon which many species have been estab- 

 lished. 



TORTULA MURALIS (L.) Hedw. 



Small, but generally closely massed. Stems about 5 

 m.m. Leaves densely crowded, oblong to ligulate, obtuse, 

 1.5 m.m., the upper ones with a plain hair point longer 

 than themselves ; margin strongly revolute ; nerve bold ; 

 cells opac^ue, irregularly quadrate, the nodulose papillae 

 very depressed. Seta 1 cm.; capsule fusiform dark, 1.5 

 m.m. ; lid half as long or shorter, conic oblique; peristome 

 red, short, twisted. 



Ver}'- common, principally on walls. 



TORTULA PAPILLOSA, Wils. 



Densely tufted, forming dark green mats on living 

 bark. Leaves recurved, short, very broadly spathulate to 

 almost rotund, vei'y obtuse, with a short hyaline hair; mar- 

 gin plain ; nerve broad, continuous, usually bearing 

 gemmae on the upper surface, with prominent irregular 

 papillae on the lower surface ; cells smooth, rotund, thin- 

 walled, not opaque, lower ones larger quadrate. Capsule 

 not seen. "Capsule erect, short, on a short seta, cylindrace- 

 ous ; lid conico-subulate, oblique ; peristome pale, half- 

 length of capsule, its lower third tubular." Braithwaite. 



Very common on elm, willow, etc., in gardens. 



STREPTOPOGON (Hampe). 



Rather robust, pulvinate. Leaves thin, almost pel- 

 lucid, with a bold nerve, margined with a band of three or 

 four series of elongated colourless cells, minutely serrulate; 

 cells incrassate, rotund, minutely papillose, in the lower 

 portion very long, linear, yellow, continuous with the mar- 

 gin. Fruit absent in all available collections. Calyptra 

 recorded as mitriform. 



STREPTOPOGON CRISP ATUS (Hampe). 



Syn : Tortula mnioides, Schew. 

 Yellowish green, stems 2.4 cm. Leaves patent, crowd- 



B 



