GRiMMiACEiE.l 63 [Zygodon. 



dry, truncate at apex, fugacious, enddstome of 8 yellowish cilia, very 

 fugacious, often abortive. Male plants intermixed with female, slender 

 geniculate-flexuose, infl. terminal, gemmiform, bracts ovate, acuminate. 



Hab. — Trunks of trees ; not common. Fr. 5. 



Inverary (Dickson). Belfast (Templeton). Mucruss, Killarney and near Beaumaris 

 {Wilson 1829) ! ! Manchester (Hobson).- Mill pond at Arundel and Charlton forest 

 (Borref). Oughterard, Ireland (Nowell i860). Handcross (yenner). Lydford (Holmes 

 1868) ! ! Dailly (Shaw). Near Airth (Lyle 1851) ! Appin (Carmichacl). New 

 Galloway (B. Syme 1850). Glen Lochay (Hunt 1868) ! Tyn-y-Groes, N. Wales (Holt 

 1885) ! ! Baldwin, I. of Man (Holt 1883) ! ! Dolgelly and Barmouth (Whitehead 1876). 



Much resembling Z. viridissimus, but with more erect straight leaves 

 with larger, laxer cells ; the caps, with a longer neck, and double peristome. 



4. ZYGODON FORSTERI (Dicks.) Wils.. 



Autoicous ; densely tufted. Leaves erecto-patent, subspathulate. 

 Caps, pyriform, striated, lid with a curved beak, teeth of per. strongly 

 recurved when dry. (T. LIV, E.) 



Syn, — Bryutn Forsteri Dicks. Fasc. PI. crypt. Ill, p. 4, t. 7, fig. 8 (1793). Brid. Muse. rec. II, 

 P. Ill, 56 (1803). 



Grimmia Fo7'steri Smith Fl. brit. iig6 (1804), Eng. Bot. t. 2225. Schwaeg. Suppl. I, 

 P. I, 66 (1811). 



Weissia Forsteri Brid. Sp. muse. I, 124 (1806), Mant. 45 (1S19), Bry. univ. i, 557 (1826). 



Gymnocephalns conoidciis Schwaeg. Suppl. I, P. II, 87 (1816). 



Gymnostomum viridissimum p.p. Hook. Tayl. Muse. br. 10 (1818). 



Amphidium pulvinatum Nees in Sturm Deutsch. Fl. II, 17 (1819). Funck Moost. 



33. t- 22. 

 Gagea compacta Raddi Nuova Raccolta Dec. II. 



Zygodon conoideus Schwaeg. Suppl. II, P. I, 158, t. 136 (1823). Brid. Bry. un. i, 590 

 (1826). HUEBEN. Muse. germ. 386 (1833). De Not. Syllab. 158 (1838). Br. Sch. 

 Bry. eur. fasc. 4, p. 8, t. 2 (1839). C. Muell. Synops. i, 667 {1849). 



Zygodon coniodens R succulentiis Hook. Grev. in Brewst. Journ. Sc. i, 132 (1824). 



Zygodon Forsteri WiL.s. Bry. br. 194, t. 46 (1855). Schimp. Synops. 250 {i860), 2 ed. 298. 

 De Not. Epil. bri. ital. 272 (1869). Berk. Handb. br. m. 217 (1863). Milde Bry. 

 siles. 164 (1869). Hobk. Syn. br. m. 98 {1873). Boolay Fl. cr. de I'Est 348 (1872). 

 HusN. Mouss. nord.ouest 100 (1873), Muse. gall. 149, t. 43 (1887). 



Autoicous ; in compact dark green cushions, rufous at base, inter- 

 woven with whitish radicles, the stems with close adpressed branches. 

 Leaves erecto-patent, broad, upper acuminato-spathulate, acute, 

 s-ubplane, with a stout nerve reaching apex, basal cells rectangular, 

 hyaline, reddish at insertion, upper rounded-hexagonal, smooth, deep 

 green and chlorophyllose. Caps, on a straight thick rufescent seta, 

 pyriform with a long neck, from yellow, fuscescent, with 8 orange 

 striae, forming ribs when dry, solid, when dry and deoperculate slightly 

 constricted below the mouth, brown and subcylindric, lid shortly conico- 



