Blepharostoma 87 



flore paroico basi turgidse et antheridiiferse. Ferianthia alte 

 emersa, albida, cellulis subelongatis, unistratis conflata, 

 pyriformi-cylindrica, primitus valde obtuse triplicata, de- 

 mum inflata fereque teretia, apice constricto solo trigona, 

 ore breviter plurilaciniata, Calyptra duplo brevior, tenuis, 

 oblonga, bilabiatim dehiscens, basi pistillidiis sterilibus sub 

 5 circumdata. Pedicellus elongatus, calceolo obconico, ore 

 subinde ligula minuta foliacea hinc aucto, basi infixus. 

 Capsula calyptram fere adaequans, cylindrico-oblonga 4- 

 valvis pertemiis bistrata ; cellulse ad parietem lateralem 

 nodis paucis fulcitse, fibris autem semiannularibus carentes. 

 Elateres maximi bispiri obtusissimi, folliculo tenuissimo 

 cito dissoluto. SporcB majusculse Iseves. — Hab. et Distr. 

 Unica species adhuc nobis cognita, Bl. trichophyllum (L.) 

 in tota zona temperata boreali crescit, et in montes sylvestres 

 alte ascendit ; rupes humidas et truncos putrescentes amat. 

 — Dimensiones (plantse Pyrenaicse e sylva Transoubat): Folia 

 •5 ; / '^ -35 ; c ;„— ,^5 ; br. int. -8; per 1-8 x -6; cal -9 -55; 

 caps -8 X -5 '"'". 



Jungermania L. Fl. Suec. (1745J. 



Jungermania § Blepharostoma Dum. Syll. Jung. (1831). 



Ptilidium Mitt, in Journ. L. Soc. (1861). 



ChcBtopsis Mitt, in Journ. L. Soc. (1864). 



Obs. The leaves are inserted almost transversely on the stem, but have (if any- 

 thing) a slight tendency to be incubous. Those of the main stem have nearly always 

 4 lacinias, or crura, and the underleaves 3 crura ; on slender branches where the 

 leaves have but 3 crura, the underleaves have but 2 ; and the crura of the under- 

 leaves are always one, or a few cellules shorter than those of the sideleaves. 



As to the inflorescence, specimens from the Pyrenees are paroicous ; English and 

 Irish ones sometimes paroicous, but very often unisexual ; and specimens gathered 

 by Douglas at Observatory Inlet in N. W. America are, so far as I have seen, con- 

 stantly dioicous. In the last, the cauline leaves have the crura (especially the two 

 medial ones) often forked, and the female bracts are very numerously divided ; but I 

 can detect no really essential difference. 



