TETRAPHIS. 31 



base, the upper more elongated and narrower, slightly decurrent ; 

 (2) gemmiferous, more slender and flexuose, with more uniformly 

 rounded-ovate and more distant leaves, ending in a cup of 4-5 

 broadly reniform bracts enclosing numerous paraphyses and 

 stalked, lenticular gemmse. Leaves very small at base of stems, 

 larger above, erect when moist, carinate at back with the prominent 

 nerve, when dry slightly undulated ; margin plane, entire ; nerve 

 ceasing below apex ; areolation rounded, at margin rather smaller 

 and more closely set, the basal a little elongated, especially near 

 the nerve. Autoicous, rarely synoicous. Male flowers apical, on 

 special shoots arising from a sterile female flower, bracts ovate- 

 lanceolate. Perichaetial bracts elongated, oblong-lanceolate, 

 acuminate but somewhat obtuse, nerved. Seta slender, yi-'iiin. 

 long, brown, smooth, straight or flexuose ; capsule narrowly 

 cylindrical, variable in length, green with a bright red top when 

 young, bright reddish brown when ripe ; calyptra covering the 

 capsule, white below, brown above, somewhat lacerate at base, 

 distinctly plicated, at apex solid and rough ; lid thin, conical, acute, 

 straight or oblique, glossy ; peristome teeth connivent when moist, 

 erect and open when dry, narrowly triangular, brown, formed of 

 linear cells. 



Hab. Turfy banks, peaty soil in woods, and rotten tree stumps. Widely 

 distributed, but not abundant. Fr. all summer. 



A very pretty and interesting species, which may readily be indentified by the 

 peristome, and when barren by the terminal gemmiferous cups which seem always to 

 be present. 



T. geniculata Girgens., an allied species found in N. America and Eastern Asia, 

 differs in the absence of gemmse, longer narrower leaves, and especially in the 

 geniculate pedicel, which is distantly tuberculous above. I have had it sent me from 

 several localities in Newfoundland and Labrador. 



2. Tetraphis Browniana Grev. {Bryum Brownianum Dicks. ; 

 Tetrodontium Brownianum Schwgr., Schp. Syn. ; Georgia 

 BrowniiCM., Braithw. Br. M. Fl.) (Tab. IX. B.) 



Very small, gregarious, stemless. Plant at first consisting of 

 a tuft of radical, frondiform leaves, 2-3 layers of cells in thickness, 

 narrowly clavate, or somewhat palmately branched at apex, 

 brownish green, persistent for some time ; female flower produced 

 among these leaves, developing into a perichstium of 8-12 

 imbricated bracts, the outer very small, all ovate or ovate-lanceo- 

 late, obtuse or acuminate, with a faint nerve which disappears in 

 the upper half, margin entire, or more frequently crenulate- 

 denticulate ; cells elliptical-rhomboid or narrowly rectangular, 

 rounded at the angles, with thick walls, at the base laxer and 



