TORTULACE^E.] 244 [Mollta. 



HAB. Cliffs at Babbicombe, Devon (Davies 1866) ! ! Vale of Llanthony 



(Boswell 1871)! ! 



Var. y. elata 5 'chimp. 



Tall, in large tufts, deep green above, fuscescent below, 2 in. high ; leaves 

 longer, more solid, muticous. 



SYN. Trichostomum crispulum Var. . datum Schimp. Synops. 2 ed. 172. 

 HAB. Muckross and Cromaglown (Hunt 1864) ! ! Cheddar Cliffs (Boswell 



1873)!! Ingleton, Yorks (West 1882)!! Barmouth (Holt 1882)!! 



Rathlin Is., Ireland (Stewart 1882) ! ! 



Var. 8. nigro-viridis Bmithw. 



Plants tall, very slender, in very dense cushioned tufts, deep green above, 

 black below ; stems repeatedly dichotomous ; leaves small, shorter, more 

 patent, with smaller areolation, the margins incurved above, upper cells 

 papillose at back. 

 HAB. Near the summit of Ingleboro (Nowell 1857) ! ! 



This moss is most variable and presents forms which offer the greatest 

 difficulty in assigning them a place under this species or M . bracliydontia ; 

 the typical form is definite enough, for the nerve apex being curved up and 

 then excurrent from the lamina as a short mucro, gives the leafpoint a 

 mimic resemblance to the bow of a boat, but in the vai. viridulum this is so 

 tapered off as frequently to become indefinite, and we have then only to 

 rely on the general obtuseness and incurved edges of the leaf-apex. Lindberg 

 is of opinion that the var. ft. is Didymodon trifarius SWARTZ. 



15. MOLLIA LITORALIS (Mitt.) Braithw. 



Dioicous; densely caespitose. Leaves oblong-ligulate, obtuse, 

 mucronate with the excurrent nerve. Caps, oblong ; lid conico, rostrate. 

 (T. XXXV, E.) 



SYN. Trichostomum litorale MITT, in SEEM. Journ. Bot. 1868, p. 99, t. 77, fig. 7 9, 

 HOBK. Syn. br. m. 61 (1873). HUSNOT Mouss. nord-ouest 74 (1873), Muse. gall. 88. 

 t. 25 (1885). SCHIMP. Synops. 2 ed. 180 (1876). 



Dioicous; densely csespitose, dull yellow green above, brown at 

 base. Stems 1 in. high, simple or innovating, interrupted and 

 comose. Leaves short erecto-patent, slightly recurved in the upper 

 half, when dry incumbent and arcuato-incurved, oblongo-ligulate, 

 obtuse, channelled ; nerve yellowish, stout, excurrent in a short mucro ; 

 cells at base oblongo-rectang. pellucid, above rounded and obscure, 

 minutely papillose. Capsule on a short pale yellow seta, oblong, tapering 

 at base, fuscescent, with a red mouth, lid yellow, conico-rostellate ; 

 peristome pale, the teeth rather short, with two slender nearly equal legs. 

 HAB. Sea-coast in the S. and West of England. Fr. 3 4. 



Sandy ground below the cliffs east of Hastings (Mitten). Whits?nd bay (Brent). 

 Aldrington beach, Sussex (Davies 1864) ! ! Staddon heights, Plymouth, Devonport 

 and Newquay (Holmes 1868) ! ! Badger's cross, Penzance c. fr. (Curnow 1867) ! ! 

 St. Minver, Cornwall (Tellam 1871) ! ! Penmon, Anglesey (Boswell 1874) ! ! Tigh- 

 na-bruaich on the Clyde (Dr. Stirton 1864, named by Wilson T. mntabilc Var. 

 brevifolium) ! Between Loch Ness and Loch Oich, a very tall form (Hunt 1866) ! ! 

 Rannoch (Dr. B. White 1867) ! Douglas, Gobey valley and sandy cliffs at Peel, I. of 

 Man (Holt 1884) ! ! Carlingford Mtn., Ireland (Rev. C. Wadddl 1883) ! ! Barmouth 



