i 



S2)lachnum.] BRYACE^. 295 



purple when old, gradually narrowing to a long purple pedicel ; 

 lid highly convex or short-conical, obtuse ; teeth approximate 

 or united in pairs, yellow. — Sp. PL 1108 ; Bryol. Eur. t. 293. 



Hab, Cranberry swamps of Ohio, New England, Pennsylvania, New 

 Jersey, and northward ; rare. 



5. S. rubrum, Linn. 1. c. Dicecious: loosely tufting, 

 annual ; stems short : leaves large, open, recurved at the apex, 

 enlarged in the middle from a narrowed base, more abruptly 

 narrowed and lanceolate, long-acuminate upward, distinctly 

 serrate from below the middle : male plants much smaller, with 

 smaller leaves : capsule small, oval-truncate, thin, membrana- 

 ceous, dirty yellow; apophysis very large, campanulate, 

 umbrella-shaped, purple, on a very long reddish pedicel ; lid 

 highly convex ; teeth 16, large, densely articulate, joined in 

 pairs at base and sometimes at the apex, the dividing line 

 effaced at the a])ex. — Bryol. Eur. t. 295. 



Hab. Eocky Mountains (Driimmond); Maine {A. Young). 



6. S. luteum, Linn. 1. c. Differs from the last only in the 



leaves not as coarsely dentate, and the umbrella-like apophysis 



convex and bright yellow ; the teeth are a little narrower. — 



Bryol. Eur. t. 296. S. melanocmdon^ Schwaegr. Suppl. ii. 1. 



28, t. 109 ; Mitten, Journ. Linn. Soc. viii. 22. 



Hab. Western North America, from several collectors, according to 

 Mitten, who states that specimens collected by Burke in the Kooky Moun- 

 tains show an extraordinary variation in the capsules. 



Tribe X. PHYSCOMITRIE^. 



Plants annual, rarely biennial, small, gregarious or sub- 

 cespitose, of soft texture, sparingly branching by innovations. 

 Leaves comjiaratively large, soft, composed of large thin 

 hyaline hexagonal or rhomboidal-oblong cells, and with a thin 

 loosely areolate costa, obovate or spatulate-acuminate. 

 Flowers monoecious or dioecious, the male discoid, axillary, 

 terminal only in young plants. Calyptra tetragonal, vesicular 

 when young, cucullate or mitriform. Capsule oval or spherical, 

 erect, regular or cernuous-gibbous ; the sporangium free, 

 adherent to the capsule by filaments. Lid convex or mamil- 

 late. Peristome none or simple or double. 



