308 BRYACE^. [Pylaisia. 



Hab. Decayed trunks, in woods; common. 



Much like Pylaisia polyantha, differing in its bright yellowish green 

 color, the leaves broader and shorter, imbricate when dry, and the 

 regular capsule more solid. 



123. PYLAISIA, Bruch & Schimp. (PL 4.) 

 Stems creeping, pinnately ramulose ; branchlets short, erect. 

 Leaves close, spreading or subsecund and falcate, ecostate, con- 

 cave, entire or slightly serrulate, glossy. Flowers monoecious. 

 Capsule ovate-oblong or subcylindrical, slightly curved when 

 dry. Teeth of the peristome linear-lanceolate, more or less 

 densely articulate, solid, hyaline on the borders ; segments 

 attached to a short membrane, longer than the teeth, linear- 

 subulate, cleft along the keel or bipartite ; cilia rudimentary or 

 none. Annulus narrow. — Pylaiea^ Lindb. 



1. P. polyantha, Bruch & Schimp. Leaves erect, spread- 

 ing, ovate-lanceolate, long-acuminate : capsule chestnut-color ; 

 cilia very short. — Bryol. Eur. t. 455. Ilypnum pohjanthos, 

 Schreb. Spicil. Fl. Lips. 97 ; Muell. Syn. ii. 337. Leskea poly- 

 antha., Hedw. Muse. Frond, iv. 4, t. 2. JStereodon polyanthus., 

 Mitt. Journ. Linn. Soc. viii. 40. 



Hab. On trees; White Mountains [James)\ Santa Fe [Fen(iler)\ Sas- 

 katchewan and Rocky Mountains (Bourgeau). Rare. 



2. P. heteromalla, Bruch & Schimp. Much like the pre- 

 ceding, differing in its pale yellowish color, the leaves broadly 

 ovate, acuminate, subscarious, erect on the borders, the cells of 

 the areolation very pale, narrow, subconfluent, those of the 

 basilar angles few, very small and slightly granulose, the inner 

 perichaetial leaves enlarged at base, the capsule oval and broader, 

 and the operculum shorter. — Lond. Journ. Bot. ii. 669 (1843). 

 Ilypmcm polyanthion, var. pallidifoliuni, Muell. Syn. ii. 837. 



Hab. Trunks of trees and stones, in various situations; Rocky Moun- 

 tains (Drummonil, n. 222). 



3. P. subdenticulata, Schimp. Plants glossy-green, 

 small, in closely entangled mats ; branchlets crowded, short and 

 slender : leaves not crowded, ovate-lanceolate, more or less long- 

 acuminate, concave, slightly serrulate at the apex ; alar cells 

 numerous, subgranulose ; perichaetial leaves sheathing, loosely 

 areola+e, narrowly acuminate : capsule oblong-cylindrical and 



