FissiDENTACE^.] 84B [Fissidcns. 



Syn. — Fissidens adiantoides jS. margiuatus Brid. Bry. univ. ii, 704 (sec. Schimper). 

 Fissidens collinus Mitt, in Journ. Linn. soc. Bot. xxi, 559. 



Hab. — -Chalk downs among short grass. Fr. 12. Woolsonbury hill [Mitten) ! 1 

 Tring [Holmes) ! ! 



This is the small form alluded to in the Bryologia europaea, and I do not 

 find the slightest difference in the cells from those of F. adiantoides, which is, 

 however, more frequently dioicous than autoicous. See Milde (48 Jahres- 

 bericht d. Schles. Ges. p. 131) 1870. 



17. FISSIDENS POLYPHYLLTJS Wih. 



Ante p. yg. Boulay in Rev. bryol. 1885, p. 50. 



HusN. Muse. gall. 52, t. 16 (1884). Mitt. Journ. Linn. soc. Bot. xxi, 559 (1885). 



F. serrtilatus Var. polyphyllus Bottini Rich, briol. nell'is. d'Elba 32 (1886). 



Boulay as well as Bottini regards this species as a northern variety of 

 F. serrulatus. 



Tab. X. A. Fissidens exilis (Keston, Braithwaite). B. Fiss. pusillus (Hill cliff dingle, 

 Wilson), y. Fiss. minutulus (Castle Howard, Spruce). C. Fiss. incurvus (Durdham 

 io^ns. Miss Attwood). D. Fiss. viridulus{Ecc\ssbo\ivne, Holmes), p. Fiss.fonianus 

 (Oxford, Boswell). E. Fiss. bryoides (Woodford, Braithwaite). ji. Fiss. Curnowii. 

 F. Fiss. tequendamensis (Tolka river, Orr). 



Tab. XL A. Fiss. osmundoidcs (Longfield moor, Nowell). B. Fiss. rufulus (Rigmaden Park, 

 Dreesen). C. Fiss. serrulatus (Teneriffe and Penzance, Curnow). D. Fiss. cristatus 

 (Rayrigg, Barnes). 



Tab. XIL A. Fiss. taxifolius (Hastings, Braithwaite). B. Fiss. adiantoides (Knutsford moor. 

 Hunt). C. Fiss. polyphyllus. a. Finistere [Camus), b. Glengariif, [Wilson). c. 

 (Penzance, Curnow). 



Tab. Xn*. A. Fisi. rivularis (Hastings, Holmes). B. E. Fiss. exiguus (Sussex, Mitten). C. 

 Fiss. viridulus (Hurst, Mitten). D. Fiss. bryoides p. (Sussex, Mitten). F. Fiss. 

 minutulus (Castle Howard, Spruce). G. Fiss. Curnowii, (Penzance, Curnow), H. 

 Fiss. incurvus /?. {Ashley, Hunt). 1. Astomiitn mediterraneum [Isle of Msm, Holt). 



a. Fertile plant, a*. Ditto mag. b. Male. t. Sterile plant. i. Leaf mag. ix. 

 Trans, section. laa. Apex and areolation. ;i. PerichEetium. 3. Male infl. 4. 

 Bract and antheridia. 5. Capsule. 6. Calyptra. 7. Tooth of peristome. 



