BRYACE^E.] 143 [Pohlia 



subvaginant and broader at base, suddenly narrowed and patent ; caps, 

 on a very slender flexuose reddish seta, inclined or pendulous, lepto- 

 dermous, from a longish neck, oval - globose or pyriform, glossy, 

 golden-yellow and castaneous ; annulus broad, revoluble, lid convex, 

 apiculate ; teeth pale yellow, lanceolate, processes of endostome keeled, 

 gaping and perforated in the middle, with long appendiculate cilia. 

 HAB. Shady rocks and walls, and sandy or turfy soil. Fr. 5 6. 



This elegant moss has leaves closely resembling those of Dicranella 

 heteromalla, and what appear to be male plants may be seen in the tufts, 

 which on dissection, however, will be found to contain abortive archegonia 

 as well as fertile antheridia. 



4. POHLIA Hedw. 



Muse, frond, i, 96 (1787). 



Stem slender, innovating from the base. Leaves lane., generally 

 glossy, the uppermost narrower and suddenly elongated, nerve terete, 

 cells -at base rhomboidal, above narrow, linear or rhomboido-hexagonal. 

 Calyptra very narrow and fugacious. Caps, with a long neck and 

 clavate or with a shorter neck and pyriform ; peristome bryoid. Der. 

 after Dr. Pohl of Dresden. 



This genus is by C. MUELLER and MITTEN retained as a section ot-Bvyuw, 

 from which it differs only in the slender habit of the species, and their 

 narrow elongated comal leaves with narrow or linear cells in the upper part. 

 The name Websva is generally used for the genus, and was applied by HEDWIG 

 to Bryum nutans and pyriforme in the same volume of his work, as, however, 

 it was preoccupied by EHRHART in 1770 (see Moss-Flora i, 291), Pohlia must 

 be adopted in its place. About 50 species have been referred to this genus. 



CLAVIS TO THE SPECIES. 



Sect. i. EUPOHLIA. Upper leaves suddenly elongated, dull green. Capsule 



narrow, with a long neck. Cilia none or rudimentary. 



Autoicous. acuminata, 



Paroicous. 



Neck of capsule shorter than sporangium. polymorpha. 



long as sporangium. elongata. 



Sect. 2. LAMPROPHYLLUM. Upper leaves broader, glossy green. Capsule 



pyriform, with a short neck ; cilia well developed. 

 Dlyoicc 



Polyoicous. cruda. 



Paroicous. 



Leaves ovato-lanceolate, nearly entire. cucullata. 



lanceolate, serrulate at apex. nutans. 



Dioicous. 



Capsule exannulate, turbinate when old. 



Small, pale yellowish green. cornea. 



Robust, glaucous green. albicans. 



annulate, oblong when old. 



Leaves oval, obtuse. Ludwigii. 



lanceolate, pointed. 



Upper leaves nerved to apex. annotina. 



not nerved to apex. 



Stem strong ; leaves soft, erecto-patent. commutata. 

 filiform, leaves rigid, appressed. gracilis. 



