GRIMMIACE.E.] 27 [Grimmia. 



Our species closely resembles G. montana but that has a larger capsule 

 with acute rostellate lid, and the perich. bracts scarce differ from the comal 

 leaves ; the leaves also are more linear towards point, and the hair is longer 

 and roughish. G. Donii differs by its small round tufts, small pale capsule 

 and mitraeform calyptra. 



20. GRIMMIA MONTANA Br. Sch. 



Dioicous ; in very dense blackish cushions. Leaves erecto-patent, 

 oblongo-lanc., with along smoothish hair, margin flat, not incrassate. 

 Caps, shortly exserted, erect, small ovate smooth fuscous, lid obliquely 

 rostrate, calyptra large dimidiate. (T. XLIX, F.) 



SYN. Grimmia montana Br. Sch. Bry. eur. fasc. 25 28, p. 26, t. 14 (1845). AONGST. in FRIES 

 Summ. veg. sc. 93 (1846). HARTM. Skand. fl. 7 ed. 374 (1858). SCHIMP. Synops. 220 

 (1860), 2 ed. 264. ZETTERST. Rev. Grimm, scand. 91 (1861). MILDE Bry. siles. 154 

 (1869). HOBK. Syn. br. m. 84 (1873). HUSN. Mouss. nord-ouest 94 (1873), Muse, 

 gall. 129, t. 37 (1887). JURATZ. Laubm. oester.ung. 171 (1882). CHALUB. Grimm. 

 Tatr. 63, t. 8 (1882). BOULAY Muse. Fr. 369 (1884). LESQ. JAMES Moss. N. Amer. 

 145 (1884). 



Guembelia montana HAMPE Bot. Zeit. 1846, p. 124. RABENH. Deutsch. kr. fl. ii, S. 3, 168 

 (1848). C. MUELL. Synops. i, 774 (1849). 



Dioicous; densely pulvinate, blackish, or dull dark green arid 

 canescent at top, fuscous and radiculose at base. Leaves recurved 

 when moist, then erecto-patent, lower small lanceolate muticous, upper 

 oblongo-lanceolate, carinate, flat and erect at margin, running out into 

 a long slightly toothed, decurrent hair ; cells above very small, roundish- 

 quadrate, bistratose, opake, at base hyaline quadrate-hexagonal, with 

 4 6 rows at margin broader and shorter ; nerve thick, prominent at 

 back, acutely channelled in front. Perich. bracts larger, sheathing at 

 base, long-haired. Caps, on a short yellow seta, erect oval-oblong, 

 smooth, orange-brown, calyptra cucullate, long-beaked, covering most 

 of caps., annulus of 3 rows of small cells, lid rostrate, length of 

 caps., teeth irregular, often erose at margin, and fisso-cribrose toward 

 point, when dry recurvo-patulous. Male plants more slender, in 

 separate tufts, bracts broadly ovate, acuminate. 



HAS. Porphyry and granite rocks ; rare. Fr. 3 4. 



Dee-side, Aberdeen (Barker & Ray 1869). Fingle bridge, Devon, c. fr. (Holmes 1877). 



Distinguished from G. ovalis by the infl., the erect margin of leaf, more 

 prominent nerve, cells opake above, bistratose in middle and longer hair. 

 From G. alpestris by the denser more opake areolation of apex, leaves more 

 patent and subulate, short capsule and rostrate lid. 



