Buxbaumia.] BKYACE^. 26T 



formed on an annulus with sixteen notches representing teeth 

 more or less distinctly. 



1. D. foliosum, Mohr. Widely cespitose, dark green : 

 stem-leaves crenulate on the borders by prominent cells, cris- 

 pate when dry : capsule immersed in the colorless perichaetium ; 

 teeth of the outer peristome very short, ti'iangular, granulose, 

 transversely articulate, often 2:)erforated in the middle, pale 

 yellow, purple at the apex. — Obs. Bot. 34 ; Bryol. Eur. t. 428 

 and 428''- BiQ-hmcmia foliosa, Web. Fl. Gott. 128. Webera 

 sessilis, Lindb. Ofv. Vet. Akad. Forh. xxi. 576. 

 Hab. Clayey and shady sandy banks, along roads. 



99. BUXBAUMIA, Hall. (PL 3.) 

 Plants very small, gregarious, growing on soil or decaying 

 wood. Lower leaves broadly ovate or ovate-lanceolate, the 

 upper ovate and linear-oblong, without costa, coarsely dentate- 

 ciliate on the borders by prominent cells ; areolation loose, 

 oblong-hexagonal, not chlorophyllose, j^ale near the base, red- 

 dish or orange-colored toward the apex, irregular when young ; 

 basilar cells transformed into lacinire or long brown filaments, 

 becoming roots and covering the stem and vaginiile with a very 

 thick tomentum. Flowers dioecious ; male plants smaller than 

 the fertile, with a few thin leaves not laciniate when old ; 

 antheridia solitary or in pairs, with few paraph yses ; perigynium 

 of the fertile flowers ovate-oblong, of 9 to 12 leaves, becoming 

 lacerate after fecundation ; archegonia 1 to 3, with few short 

 paraphyses ; perichaitial leaves very irregular, ramose-ciliate 

 after fecundation. Vaginule thick, fleshy, formed of the peri- 

 chffitial part of the stem. Calyptra conical, cylindrical, obtuse, 

 covering the lid only, detached before the maturity of the 

 fruit, sometimes slightly split on one side. Capsule on a thick 

 red densely verrucose pedicel, oblique on a solid erect neck, 

 ovate or ovate-oblong, ventricose, flattened on one side. Lid 

 conical-cylindric, obtuse. Peristome double, the outer either 

 imperfect and adherent to the annulus, or perfect, formed of a 

 double or triple series of teeth, the inner like that of Dipliyscium, 



