Grimmia.] MUSCI-ACROCARPI-PERISTOMJ. '2/ 



Fl. Brit. p. 1214. E. Bot. t. 2165. Turn. Muse. Hib. p. 77 — 

 Bryum ovale, Dicks. Cr. Fuse. 4. p. 14. 



Rocks, principally in alpine situations. Fr. June* 



10. G. Donidna, Sm. (Donian Grimmia); stems short, leaves 

 lanceolato-subulate produced into long diaphanous hair-like 

 points their margins incurved, capsule ovate, teeth of the peri- 

 stome quite entire, lid shortly rostrate. Fl. Brit. p. 1198. 

 E. Bot. t. 1259. Hobs. Br. 3Iosses, v. 1. n. 27. Muse. Brit, 

 ed. 2. p. 72. t. 13. — G. sudetica? Schiuaegr. Suppl. v. 1. t. 24. 



Alpine rocks. Fr. April. (WUs.') Aug. — Always much smaller than 

 G. ovata, with the teeth of the peristome quite entire; nor have I ever 

 seen any intermediate states. 



11. G. atrdta, Mielich. (black tufted Grimmia); stems elon- 

 gated very compact, leaves dense erecto-patent linear-lanceo- 

 late rigid obtuse slightly keeled destitute of hair-like points, 

 capsule cylindrical, lid conical with a short somewhat oblique 

 thick beak, teeth narrow-lanceolate (yellow) marked with a line 

 or occasionally split. — Mielichoffer in Hoppe and Hornsch. PL 

 Select. — Hornsch. in Bot. Zeit. 1819. p. 85. Schwaegr. Suppl. 

 v. 2. P. 2. t. 116. Hook. Muse. Exot. v. 2. t. 100; (small speci- 

 mens, but otherwise very characteristic). Bryol.Germ. r. 2./;. 164. 

 t. 23. f. 19 ; (capsules too short). Schwaegr. Suppl. II. P. 2. 

 p. 59. V. 116; (good). 



Rocks above Glen Callater; Dr. Greville, 1830 Fr. (scarcely 

 mature) Aug. — Hitherto I believe this very distinct Grimmia had only 

 been found on the Alps of Saltzburg. The stems and thickened branches 

 are very densely tufted. The leaves are almost black, except the upper- 

 most, which incline to green. The seta is rather thick, yellowish, orange- 

 coloured at the base. Capsule truly, but broadly cylindrical. Lid with a 

 short slightly inclined beak. Peristome pale yellow. 



.-12. G. unicolor, Plook. (dingy Grimmia); stems elongated 

 Blender rather loosely tufted, leaves lax erect from a broad base 



Linear-lanceolate rigid obtuse keeled upwards destitute of 

 hair-like points, capsule elliptical, lid with a subulate in- 

 clined beak, teeth narrow-laneeolate (red) entire. Hook, in 

 Drum. Muse. Scot r. 2. p. 32. Grev. Scot Cr. Fl. t. 123. 

 MUSC. Hi it. at. '1. /,. 72. Suppl. t. 3. — (i. atrata, Hook, in Drum. 

 Muse. Aimric. n. 57. (nut MiiUch.) 



Abundant on the steep, almost perpendicular, lace of an exposed rock 

 Above Bachnagairn, a hunting Lodge belonging to the Hon. D. Qgityie,at 

 tin- head of Clova, Angus-shire; Mr. T. Druwmond, Fr. Aug. — Allied to 

 the last, but truly distinct, although I had myself confounded the 



American specimens from Lake Superior, vrith the Q, mtrata. The 



whole plant is of a browner hue and mOK opaque, the stems are quite 

 slender, the leave* crei t, broader at the base, narrower and more keeled 



upwards. Capsule broader and shorter, /w./ with a rerj slender, inclined 



beak, often half as long BS the capsule. Teeth deep red, not marked 

 with a line, nor el. ft. IV.. m the stem--, filiform barren branch 

 quenth arise, Clothed with minute imbricated o\ . ' Cati/ntnt 



mitriforin, sometimes eventually dimidiate, as in / ■'. ■liostuma. 



