Pleuridiwn.] BRYACE^. 43 



pedicel, oval or oblong, sliglitly incurved, gradually narrowed 

 into an obtuse beak, brown. — Crypt, fasc. 4, t. 10, fig. 3 ; 

 Bi-yol. Eur. t. G. P. (pjmnostotnoides^ Brid. Bryol. Univ. i. 48, 

 Pottia hryoides, Lindb. Trichost. 10. 



Hab. On the south side of a hill near Oakland, California (Bolander) ; 

 very rare in the United States. 



6. PLEURIDIUM, Brid. 



Plants annual, or jjersisting by innovations from the apex 

 after the maturing of the fruit. Leaves oblong at base, lanceo- 

 late-subulate, obtusely serrate at the apex, costate, the u})per 

 tufted. Calyptra cucuUate. Capsule ovate-globose or ovate- 

 apiculate, smooth, shining, short-pedicellate. — Phascwn^ Linn, 

 and authors, in part. 



* Floioers bisexual. 



1. P. subulatum, Bruch & Schimp. Plants cespitose, 

 yellowish green : lower leaves ovate-lanceolate, erect, the upper 

 lanceolate-subulate, erect-spreading or subsecund, much exceed- 

 ing the top of the capsule ; costa broad, reaching to the obscurely 

 serrate apex : antheridia naked in the axils of jjerichaetial leaves : 

 capsule globose-ovate, apiculate. — Bryol. Eur. t. 9. Phascum 

 subulatum, Schreb. ; Sulliv. Mosses of U. States, 16. 



Var. stramineum, Lesq. Plants pale yellow ; stems with 

 long slender flaoelliform innovations and short distant leaves ; 

 comal leaves more abruptly narrow^ed at the apex. — PleuricUum, 

 stramineum, Sulliv. & Lesq. ; Austin, Bull. Torr. Club, vi. 142. 

 P. sitbulatum, Lesq. Trans. Am. Phil. Soc. xiii. 2. P. subu- 

 latum, var., Watson, Bot. Calif, ii. 359. 



Hab. Diy hills and old fields; rare. Pennsylvania {Jaines)\ Cali- 

 fornia (Bolander). 



The variety was at first admitted as a species and figured for a plate of 

 Sullivant's Icones. It is intermediate between the typical form and the 

 following. 



2. P. Ravenelii, Aust. Differs from the last in its shorter 



stems, the comal leaves broader, lanceolate or ovate-oblong in 



the lower part, carinate, the costa excurrent into a more or less 



elongated smooth awl-shaped point, the capsule a little larger 



and broadly apiculate. — Bull. Torr. Club, vi. 142. 



Hab. Light sandy soil. South Carolina {Bavenel); New Jersey and 

 New England [Austin, Bennett, Jesup). 



