TETRAPHTS. 97 



emineut patron of botanical study/' instituted this genus iu 

 his honour. 



Generic Character. — Seta terminal. Peristome single, of four 

 erect, cellular teeth. Calyptra mitriform, plicate. 



1. Tetraphis pellucida, Hedw, {PeUucid Tetrapliis.) 

 Stems elongated; leaves ovate, acuminated, those of the 

 perichaitium lanceolate; capsule cylindrical. — Eiig. FL i^. 

 \^. Georgia Mnemosynum, Mi'dl. S//11. pL 1. p. 182. 



Decaying trunks of trees, and on the ground chiefly in 

 hilly districts. Fr. Spring and Summer. The specific 

 name, " pellucid," is well applied to tliis elegant little iMoss, 

 as no character is more marked than the delicate transpa- 

 rency of its pale, somewhat rigid, and neatly arranged foliage. 

 The fruit is not very plentful, but mc always find on the 

 summit of some of the branches little cup-shaped rcce])- 

 tacles formed of broadly obcordate leaves, within \a Inch are 

 placed little spherical bodies attached by a footstalk, and 

 presenting much analogy with the " anthers" of a luiujer- 

 mamiia. The segments of the peristome are also of a pe- 

 culiarly rigid structure, and have their origin a good deal 

 within that of the external edge of the capsule, which gives 

 them the appearance of a separate tube. 



2. TetPvAPHIS BrowniaxAj Grev. {Mr. Brown's Tefra- 



H 



