Grimmiace-E. 36 [Grimmia. 



Rhacomitnum dUpticuiii Br. Sch. Bry. eur. fasc. 25—28, p. 5, t. 24 (^1845). WiLS. Bry. 

 br. 164, t. 19 (1855). ScHiMP. Synops. 228 (i860), 2 ed. 273. Zett. Rev. Grimm, sc. 

 109 (1861). Berk. Handb. br. m. 236 (1863). Hobk. Syn. br. m. 86 (1873). HusN. 

 Muse. gall. 138, t. 39 (1887). 



Dioicous ; in blackish rigid fragile depressed tufts, luteo-fuscous at 

 top. Stems I in. long, erect or decumbent at the naked base. Leaves 

 from an erect base, patent, when dry suberect and incurved, shortly 

 oblongo-lanceolate, rather obtuse, solid, carinate-concave, lightly 

 incrassate and of 2 — 4 strata at the erect margin, upper cells bistratose, 

 minute, sinuoso-quadrate, lower elongated, linear, crenulato-sinuose, all 

 strongly pachydermous, smooth ; nerve brownish, ill-defined above, 

 ending at or below apex. Perich. bracts similar, shorter. Caps, erect 

 on a thick rigid yellow seta, small, ovato-globose, smooth, pachydermous, 

 rufo-fuscous, black when old ; annulus broad, double, lid acicular, 

 straight, long as caps., teeth narrowly lane, bi-trifid to the middle, 

 rufous-purple, smooth, when dry radiately patent ; calyptra scabrous 

 at apex. 



Hab. — Damp schistose alpine rocks. Fr. 11 — 2. 



BanUy (Miss Hntchins). Fairhead, Antrim; Brandon, Kerry; Lugnaquillia, Wicklow; 

 Maam.torc, Galway ; Giant's-stairs, Monkstown (CacroH). Snowdon (Wilson 1S26) I \ 

 Ben Arthur and Crianlarich (Hunt). Clova (Bell). Ben Laoigh (Ewing). Ben Nevis 

 (Whitehead 1875) I Tyndrum (Kidstot.) \ Ptarmigan Mtns. (Holt 1880)!! Slieve 

 Donard and Slieve-na-Maddy, Down (Lett) ! ! Skye, Clova, and Ben Macdhui (Hunt 

 1868). 



Distinguished by its small size and dark color from G. aquatica. 



2g. GRIMMIA PATENS [Dicks.) By. Sch. 



Dioicous ; in large olivaceous fragile tufts, repeatedly dichotomous, 

 with curved branches. Leaves patent, lanceolate, acuminate, muticous, 

 margin revolute in lower half, nerve with 2—4 lamellae at back, 

 cells very minute and rounded above. Caps, oval, on a cygneous 

 seta. (T. LI, A.) 



HYy.—Bryum patens Dicks. PI. crypt. Fasc. II, p. 6, t. 4, f. 8 (1790). 



Plerygynandrum ? patens Hedw. Sp. muse. 87 (i8oi). Brid. Sp. muse. I, 136 (i8o6). 

 Dieranum patens Sm. FI. brit. 1212 (1804), Eng. bot. t. 1990. Brid. Sp.musc. I, 191. 

 Plerygynandrum Ramondi De Caxd. F1. franc. 3 ed. iii, 462 (1805). 



^ xt^ct'izTin otr(f8o"^^^^ ^'- "■ ''''^- '""'• 3' "• '9 ^'^°^^ ' ^eb. Mohr Bot. 

 Tortula ? patens P. Beauv. Prodr. 48 (1805). 



'^T"f.T.Zj''*T ^''^- t^'""" u^°,'- '^^^''^- ^^5 ('807). Bland. Muse. fr. exs. fasc. 5, 

 P I ^*,? t\v excTr D^^t^^h'.r ge-. P. II, 77, t! 34 (1810). SCHWAEG. Suppl. I 

 t\1\ I' l^' T ^S; '/• 7' 8 1811 . Roehl. Deutsch. fl. iii, 62 (i8n). Hook 

 P.Ti3?(r85 Br! ".t i'&r^^' ^"- ^"- "'■ ^'- " "^ ('«")■ Hoo^!-F.S: 



Fissidens patens Wahlenb. Fl. lapp. 334 (1812), Fl. ca.pat. 340 (1814). 



Ciimpylopus patens Brid. Mant. 73 (1819). 



