GRIMMIACE.E.] 45 [Grimmia. 



Rhacomitrium ramulosum LINDB. Act. soc. sc. fenn. X, 550 (1875). 



Grimmia ramulosa LINDB. Muse, scand. 29 (1879). 



Rhacomitrium heterostichum Var. microcarpum HUSN. Muse. gall. 140 (1887). 



Dioicous ; in lax depressed tufts, dark brown at base, pale or yellow- 

 green above, lightly canescent ; more slender than G.fascicularis, flexuose, 

 with short crowded fasciculate obtuse branches. Leaves densely crowded, 

 patulous, variously curved and subsecund at apex, from a longish ovate 

 base with a shallow plait on each side, lanceolate, gradually narrowed 

 into a short toothed hoary point, margin revolute, not thickened at the 

 carinate apex, nerve broad, flat bistratose ; areolation of all lamina, 

 sinuose, unistratose, nodulose-linear, very narrow at base, with i 2 

 marginal rows hyaline and quadrate. Perich. bracts shorter, sheathing, 

 the nerve vanishing about the middle. Seta short, pale yellow ; caps. 

 ovate, elliptic or cylindraceous ; very small, leptodermous, yellow, then 

 fuscescent with a red mouth ; calyptra mitrate, papillose-scabrous at 

 apex, annulus triple, lid conoid, subulate, f length of caps., peristome 

 orange, teeth linear, short, cleft to base into two filiform nodose legs, 

 erecto-patent when dry. Male infl. numerous, inner bracts broadly 

 ovate, shortly acuminate, muticous. 



HAB. Dry mountain rocks. Highlands (Herb. Hooker). 



This moss still remains a doubtful native, its claims as such resting 

 solely on the unlocalized specimens in the Hookerian herbarium. 



Nearest to G. fascicularis, but in that species all the leaves are muticous 

 and rather obtuse with the nerve vanishing below the apex, the capsule also 

 is larger, fuscous and pachydermous. From G. heterosticha it is distinguished 

 by the numerous lateral ramuli, diaphanous leaves with the cells of upper 

 part elongated and sinuose, and of the lower elegantly nodulose, those of the 

 margin being i and not 2 stratose, and the small pale capsule. 



36. GRIMMIA FASCICULARIS (Schrad.) C. Mudl. 



Dioicous ; stems elongated, with fasciculate short ramuli. Leaves 

 crowded, incurved or recurved, lanceolate, gradually narrowed, 

 muticous, reflexed at margin. Caps, elliptic, lid long, acicular ; teeth 

 long, bipartite. (T. LII, B.) 



SYN Bryum hypnoides aquaticum, calyptris nigris acutis Var. C. strigosior cum setts 



brevioribus DILL. Hist. muse. 367, t. 46, f. 26 C (1741) et Herb. 



Bryum hypnoides hirsutic virescens, fasciculare alpinum DILL. op. c. 370, t. 47, f. 28 

 et Herb. 



