Fissidens.] BRYACE^. Ql 



SuBTRiBE I. — FISSIDENTE^. 



Stems frondiform. Leaves distichous, conduplicate below, 

 alate on the back, the upper part expanded into a vertical simple 

 lamina with a percurrent or excurrent costa ; areolation small, 

 chlorophyllose. Operculum and peristome as in Dicranum. 



25. FISSIDENS, Hedw. (PI. 1.) 

 Plants simple or sparingly branched. Flowers gemmiform, 

 terminal or axillary. Calyptra cucullate or mitriform. Cap- 

 sule cernuous or erect. Teeth of the peristome horizontally in- 

 curved when dry. Annulus narrow. Spores small, smooth. — 

 Skit02'>hyllum, La Pyl. 



* Monoecious. Fruit and flowers terminal., or rarely lateral. 

 -H- Plants less than one c. m. long. 



1. F. Olosteri, Aust. Plants gregarious, very minute or 

 stemless : male flowers attached to the base : leaves pericha9tial, 

 the lower very small, broadly ovate-lanceolate, acuminate, the 

 upper at least twice as large, the lanceolate lamina about equal 

 to the ovate-plicate base ; costa endmg below the apex ; areo- 

 lation quadrate-oblong, equal : cai>sule oblong-ovate, on a thick 

 pedicel ; lid with a long conical beak, entirely covered by the 

 calyptra; teeth long, reflexed ; annulus indistinct. — Bull. Torr. 

 Club, V. 21 ; Sulliv. Icon. Muse. Suppl. 44, t. 29. 



Hab. On the ground, near Closter, N.J. (Austin). 

 Smaller than F. exills, its nearest congener, and distinguished by its 

 shorter leaves, the blade almost obsolete. 



2. F. bryoides, Hedw. Plants small, gregarious : leaves 

 with a lingulate-lanceolate lamina, bordered all around by a 

 pale rounded margin either connivent at the apex with the 

 shortly excurrent costa, or ending below the minutely serrate 

 apex ; perigonial leaves broad-ovate at base, erose on the borders 

 below tlie abruptly narrowed short apical lamina : male flowers 

 in numerous axillary pedicellate buds: capsule erect, oblong- 

 ovate ; annulus very narrow, indistinct. — Muse. Frond, iii. 67, 

 t. 29, excluding fig. 10; Bryol. Eur. t. 101; Braithw. Brit. 

 Moss-Fl. i. 71, t. 10, E. 



