Phi/scomltrlum.] BRYACE^. 197 



late, lanceolate, acuminate, more distinctly serrate from the 

 middle upward than those of Aphanorhegjna ; marginal cells 

 yellow: male flowers terminal on young plants, becoming 

 lateral by the growth of the fertile innovations : calyptra erect, 

 long-beaked, mitrate, quadrilobate, scarcely reaching to the 

 middle of the lid : capsule short-pedicellate, immersed, sub- 

 globose ; lid large, hemispherical, convex, apiculate. — Mosses 

 of U. States. 51, t. 4, and Icon. Muse. 93, t. 56. 



Hab. River banks, Southern Ohio (Xea); Western Pennsylvania 

 (Lesquereux)\ South Carolina {Ravenel). 



Differs from Aphanorhegma merely in the inflorescence, the dehiscence 

 of the lid, and the leaves more distinctly serrate by yellowish cells. 



2. P. pygmaeum, James. Plants still smaller than in the 

 last ; stems prostrate at base, radiculose, bipartite : leaves soft, 

 whitish green, the lower distant, flexuous, the upper loosely 

 tufted, ovate-lanceolate, slightly serrate ; costa percurrent or 

 vanishing below the apex ; marginal cells transversely oblong, 

 in 5 to 7 rows : capsule oblong, pyriform when empty ; lid com- 

 paratively long ; annulus narrow, persistent ; pedicel twisted 

 to the left. — Bot. King Exp. 404. 



Hab. On the ground above Parley's Park, in the Wahsatch Moun- 

 tains, Utah, at G,500 feet altitude (Watson)\ a few imperfect specimens. 



The small size of the plants and their prostrate black radiculose stems 

 separate this species from all its congeners. It closely resembles P. 

 Hookeri, but differs in its size, the narrow annulus, etc. 



3. P. pyriforme, Brid. Densely gregarious or widely and 

 loosely cespitose ; plants robust, yellowish green : leaves open 

 or flexuous, soft, the lower distant, ovate-lanceolate, the upper 

 tufting, spatulate or oblong-lanceolate, concave, serrate from 

 the middle upward ; costa vanishing below the apex : calyptra 

 large, mitriform, descending to the middle of the capsule : cap- 

 sule large, long-pedicellate, orbicular-pyriform, the cells sur- 

 rounding the orifice transversely rectangular in mttltiple series ; 

 lid convex-conical, obtusely apiculate or rostellate. — Bryol. 

 Univ. i. 98 (under Gymnostomum) ; Bryol. Eur. t. 299. Gym- 

 nostomiim pyriforme, Hedw. Fund. Muse. ii. 87. 



Hab. On wet open and shaded ground, wet meadows; very common. 

 The variety described below in Florida (Daniel B. Smith, Garber). 



Plants very vai'iable in size, appearance, color, etc., according to habi- 

 tat. Luxuriant in wet places, with longer larger whitish green leaves 

 and longer operculate capsule, on reaching dry ground it gradually be- 

 comes short and yellowish, with shorter-pedicellate nearly globose capsule 



