Grimmiace^.J 48 [Griwrnia. 



lateral branches longer. Leaves very densely crowded, long, erecto- 

 patent, incurved or secund, especially at apex ; thin-nerved, from an 

 ovate base, lanceolate acuminate, with one or more plaits at base, 

 carinate-concave in the upper part, the margin revolute below, apex 

 with a broadly membranous border, excurrent in a hair, its margin 

 flattened, minutely papillose, eroso-subciliate-dentate ; nerve bistratose, 

 broad, thin, prominent at back ; cells unistratose, quadrate at apex, 

 elongate and very narrow at base, beautifully seriate, eroso-sinuose, 

 walls incrassate, minutely crenulate, one row at the basal wings 

 rectangular and hyaline. Perich. bracts sheathing. Caps, many near 

 the apex, rising from short lateral ramuli, on short rough reddish setae, 

 small ovato-elliptic, pachydermous, brown ; calyptra rough at apex ; 

 lid subulate, § length of caps. ; annulus very broad, revoluble ; teeth 

 biiid, the legs long equal, filiform, erecto-connivent. 



Hab. — Stony heaths, rocks and walls ; common in mountain and subalpine 

 districts. Fr. 5 — 6. 



This fine moss is not met with frequently in fruit, which appears to be 

 produced most freely on shaded walls and rocks in the lowlands. The eroso- 

 dentate hair point, which is a most beautiful miscroscopic object, is quite 

 sufficient to identify the species ; Lindberg however has a var. suhimberhis, 

 where this part is almost wanting, it then approaches G. affinis, but the habit 

 and areolation sufficiently distinguish it. 



38. GRIMMIA CANESCENS {Timm) C. Muell. 



Dioicous ; in lax yellowish-green hoary tufts. Leaves patulous, 

 ovato-lanceolate, papillose on both sides, with a serrate hair. Caps, on 

 a long smooth seta, ovate, lid long and subulate, teeth very long, with 

 filiform nodulose legs. (T. LII, D.) 



Syn. — Muscus capillaris lanugine canesceiis, pediculis tenuibns oblongis, capitulis in mucroncs 

 longos recte sursum exporrectis. Vernon. Ray Synops. 2 ed. 31 (i6g6). 



Bryum trichoides erectis capitulis, laimginosum Dill. Cat. Giss. 224 (1718). 



Muscus trichoides montanus erica hirsuto folio, capitulis erectis acutis D. Richardson. 

 Dill, in Ray Synops. 3 ed. 97 (1724). 



Bryum hypnoides hirsutie canescens, vulgare Dill. Hist. muse. 368, t. 47, f. 27 A— C 

 (1741), et Herb. 



Bryum hypnoides Var. /?. L. Fl. suec. 2 ed. 392 (1755). 



Hypnum canescens Var. pilosum Weiss Crypt, gott. 213 (1770). Weber Spic. fl. goett. 

 82 (1778). 



Bryum hypnoides ScHREB. Spic. fl. lips. 77 (1771). 



Bryum hypnoides Var. p. pilosum Retz. Fl. scand. prodr. ii, 214 (1779). 



Trichostomum hypnoides Hedw. Fund. II, gi, t. 8, fig. 43-44 (1782) 



