GRIMMIACE*.] 26 [Grimmia. 



19. GRIMMIA ALPESTRIS. 



Schleich. 



Dioicous or autoicous ; in large olive-green or blackish tufts, 

 shortly canescent. Leaves lane, with a smooth hair, lower muticous, 

 margin plane ; perich. bracts larger, broad. Caps, on a short seta, erect, 

 oval or oblong, smooth, brown ; calyptra cucullate, lid conic, obtusely 

 rostellate, annulus indistinct ; teeth red, subentire. (T. XLIX, E.) 



SYN. Grimmia alpestris SCHLEICH. PL Helv. exsic. NEES HSCH. Bry. Germ, ii, P. I, I39 , 



t. 21, f. 12 (1827). DE NOT. Syllab. 244 (1833), Epil. bri. ital. 702 (1869). BR. SCH. 



Bry eur fasc. 2528, p. 27, t. 15 (1845). AONGSTR. in FR. Summ. veg. sc. 93 (1846). 



HARTM. scand. fl. 7 ed. 374 (1858). SCHIMP. Synops. 221 (1860), 2 ed. 265. 



ZETTERST. Rev. Grimm, scand. 93 (1861). MILDE Bry. siles. 155 (1869). JURATZ. 



Laubm. oester.-ung. 172 (1882). CHALUB. Grimm. Tatr. 65, t. 9 (1882). BOULAY 



Muse. Fr. 370 (1884). HUSN. Muse. gall. 129, t. 37 (1887). LESQ. JAMES Moss. 



N. Amer. 146 (1884). 

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



(1848). C. MUELL. Synops. i, 772 (1849). 

 Grimmia lamellosa C. MUELL. Bot. Zeit. 1854, p. 318. 

 Grimmia Ungeri JURATZ. in UNO. KOTCHY Die insel Cypern 169 (1865) ; Laubm. 



oester.-ung. 167 (1882). BRAITHW. in Journ. Bot. 1872, p. 198, t. 124. HOBK. Syn. 



br. m. 83 (1873). SCHIMP. Synops. 2 ed. 853 (1876). 

 Grimmia intermedia FERG. MSS. 



Dioicous or autoicous ; in compact cushioned tufts, 2 3 in. 

 diameter, glaucescent or dark olive or blackish-green, more or 

 less canescent, radiculose at base. Leaves erecto-patulous, lower 

 smaller, muticous, comal larger, from an ovate base, lanceolate, 

 gradually or suddenly passing into a smooth decurrent hair, 

 margin plane, slightly incrassate above ; cells at base shortly rectan- 

 gular, with 2 4 rows at margin quadrate and hyaline, the transverse 

 walls more thickened, upper bistratose, opake, roundish quadrate ; 

 nerve narrow, sulcate in front, prominent at back ; perich. bracts 

 broader, elongated, semi-vaginant, internal shorter, very narrow. Caps, 

 on an erect straw-colored seta, scarce elevated above the hairs, small, 

 oval or oblong-cylindric, smooth, pachydermous, ferrug.- brown ; 

 annulus narrow, of 3 series of cells, variable in distinctness ; calyptra 

 large, cucullate, lid conic, subobtuse, rufous, teeth orange-red, conico- 

 subulate, entire or sparingly perforated or cleft at apex. Male infl. 

 terminal or lateral, bracts broadly ovate, obtuse, muticous. 

 HAB. On earth in crevices of rocks, very rare. Fr. 4. 

 Near Ballater (Rev. y. Fcrgusson 1870) ! ! 



Chalubinski's acute observations on this species are quite sufficient to 

 satisfy us that G. Ungeri is not specifically distinct from G. alpestris, which 

 is truly polyoicous, and the annulus most variable according to the amount 

 and direction of the incrassation of its individual cells; he is also of 

 opinion that hybrids form between G. alpestris and G. Donii. 



