Tetrodontium.] BRYACE^. 187 



capsule greenish when filled, brown with age ; pedicel smooth, 

 twisted to the left in the lower part, to the right above. — 

 Fund. Muse. ii. 87, t. 7, f. 32, and Spec. Muse. 45, t. 7 ; Bryol. 

 Eur. t. 196. JInium pellucidum, Linn. Sp. PL 1109. Georgia 

 JInemosynum, Ehrh. ; Muell. Syn. i. 180. G. j^eUiccida, 

 Rabenh. 

 Hab. On decayed trunks in deep woods; common. 



2. T. geniculata, Girgens. Differs from the last in the 

 upper leaves longer and narrower, linear-lanceolate, acuminate, 

 the perigonium not deformed, and the pedicel geniculate in the 

 middle. — Milde in Bot. Zeit. xxiii. 155; Scliimp. Bryol. Eur. 

 Suppl. Tetraphis^ 1, t. 1. 



Hab. Moose River (Lyall); Sitka {Bischoff, Eothrock). 



63. TETRODONTIUM, Schwaegr. 

 Plants very small, gregarious. Stems very short, bearing 

 flowering gemmules at the base of filifoi'm foliate brauchlets. 

 Capsule thick, oval, covered to the base by a solid calyptra; 

 pedicel thick, rigid. Teeth short. 



1. T. repandura, Schwaegr. Basilar innovations erect : 

 leaves ovate-lanceolate, rigid, reddish brown, close and imbri- 

 cate; perichietial leaves ovate and oblong, very concave, 

 obscurely costate ; perigonial leaves smaller, thinner, ecostate, 

 like those of the brauchlets : capsule oval, its orifice eniargi- 

 nate between the teeth ; lid conical, erect, short. — Suppl. ii. 

 102 ; Bryol. Eur. t. 197. 2''etfcq)his rejKmda, Funck ; Nees in 

 Sturm's Deutschl. PI. ii, fasc. 17, t. ; Schwaegr. Suppl. ii. 21, 

 t. 107. 



Hab. On sliaded rocks near the Glen House, and at Dixville Notch, 

 White Mountains {James) ; very rare. 



Tribe VII. DISCELIE^. 



Plants very small, nearly Avithout stems, gemmiform, gre- 

 garious, produced from a persistent prothallium, difficious. 

 Leaves oblong-lanceolate, muticous at the apex, ecostate ; 

 perichoetial leaves longer ; areolation loose, in long hexagonal- 

 rhomboidal meshes. Male plants in the same prothallium as 

 the female ones ; antheridia small ; paraphyses numerous, sub- 



