FlSSIDENTACE^E.] 846 



SYN. Fissidens adiantoides j3. marginatus 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) I \ 

 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 POLYPHYLLUS Wils. 



Ante p. 79. BOULAY in Rev. bryol. 1885, p. 50. 



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



F. serrulatus 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 exllis (Keston, Braithwaite). B. Fiss. pusillus (Hill cliff dingle, 

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

 downs, Miss Attwood). D. Fiss. viridulus (Ecclesbourne, Holmes), ft. Fiss.fontanus 

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

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



TAB. XI. 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. XII. A. Fiss. taxifolius (Hastings, Braithwaite). B. Fiss. adiantoides (Knutsford moor, 

 Hunt). C. Fiss. polyphyllus. a. Finistere (Camus), b. Glengariff, (Wilson). c. 

 (Penzance, Curnow). 



TAB. XII*. A. Fiss. rivularis (Hastings, Holmes). B. E. Fiss. exiguus (Sussex, Mitten). C. 

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

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

 Fiss. incurvus ft. (Ashley, Hunt). I. Astomum mediterranean (Isle of Man, Holt). 



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

 Trans, section. zaa. Apex and areolation. 2. Perichietium. 3. Male infl. 4. 

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



