HYPNACE.E.] 21 [Amblystegium. 



4. AMBLYSTEGIUM IRRIGUUM (Wils.) Schimp. 



Autoicous ; prostrate, more or less pinnate, deep green. Leaves 

 patent and subsecund, ovato-lanceolate, acuminate, obsoletely serrulate, 

 nerved to apex, basal cells dilated. Capsule oblong, cernuous, arcuate. 

 (T. LXXXVIII, C.) 



SYN. Hypnum fluviatile p.p. plur. auct. (non SVVARTZ). 



Amblystegium fluviatile BR. SCH. Bry. eur. fasc. 55 56, p. n, t. 5 (1853). 



Hypnum irriguum WILS. Bry. brit. 361 (1855). BERK. Handb. br. m. 97 (1863). HOBK. 

 Synops. 164 (1873). BOUL. Muse. Fr. 72 (1884). 



Amblystegium irriguum SCHIMP. Coroll. Bry. eur. 127 (1855), Synops. 594 (1860), 2 ed. 

 712. MILDE Bry. siles. 326 (1869). DE NOT. Epilogo 152 (1869). HOBK. Synops. 

 2 ed. 213 (1884). LESQ. JAMES Moss. N. Amer. 374 (1884). HUSN. Muse. gall. 360, 

 t. 103 (1893). Dix. JAMES. Stud. Handb. 444 (1896). 



Autoicous; caespitose, depressed, rigid, deep green. Stem rooting 

 in all its length, subpinnato-ramulose. Leaves subremote, erecto- 

 patent and subsecund, opake, from a cordate or broadly ovate decurrent 

 base, lanceolate, longly and acutely acuminate, obsoletely serrulate, 

 nerve flattened, vanishing in the apex, basal cells quadrate and 

 rectangular, diminishing gradually upward, the upper cells hexagonal. 

 Inner perich. bracts oblong-lanceolate, entire ; capsule incurvo- 

 cernuous, oblong, leptodermous, arcuate when dry, contracted below 

 the dilated mouth, pale ferruginous ; lid convex-conic, apiculate ; 

 annulus of 3 rows of cells ; teeth rather broad, orange, processes 

 nearly entire, cilia 2 3 long. 



HAB. Sandstone rocks and stones in streams, not uncommon. Fr. 5. 



Felyn Esgob near Bangor and Hill Cliff, Dingle (Wilson 1854) ! ! Sussex (Borrer). 

 Tyfry, Anglesey (Wilson 1854) ! ! Windermere (Clowes 1856) ! Ashley Mill, Cheshire 

 (Hunt 1865) ! ! Shere, Surrey (Capron 1868) ! ! Kirkham weir, Yorks. (Hunt 1871). 



5. AMBLYSTEGIUM FLUVIATILE (Swartz) Schimp. 



Autoicous; prostrate, with flaccid simple branches. Leaves 

 ascending, laxly imbricated, ovate, concave, rather obtuse, entire, 

 nerved nearly to apex. Capsule suberect, cylindric, somewhat curved, 

 lid conical. (T. LXXXVIII, D.) 



SYN. Hypnum fluviatile SWARTZ Muse. suec. 63 (1799). HEDW. Sp. muse. 277, t. 81 (1801)- 

 WEB. MOHR Bot. Tasch. 303 (1807). HARTM. Skand. Fl. 5 ed. 333 (1849). WILS. 

 Bry. brit. 359, t. 55 (1855). BERK. Handb. Br. m. 98 (1863). HOBK. Synops. 164 (1873). 



Hypnum palustre (3. fluviatile WAHLEN. Fl. suec. 2 ed. 732 (1833). MYRIN Coroll. 38. 



