GRIMMIACE.E.] 15 [Grimmia. 



cells punctiform, lower elongate-linear, yellow, the walls incrassate, 



green, median quadrate, all unistratose. Short jointed filaments, 



producing globose propagula at upper end, are frequent upon the 



leaves. 



HAB. Alpine rocks. Fruit unknown, 



Ben Lawers, Craig Chailleach, &c. (Hooker, Grevllle) \ ! Clova mountains. Snowdon 

 (Wilson) ! ! Most of the Irish mountains above 1,000 ft. Falcon clints, Teesdale 

 (Novell) ! ! White Force and Mazebeck Scarrs (Baker 1856) ! Hillbell, Westmoreland 

 (Stabler 1868) ! Cheviots (Hardy). Helvellyn (Boswcll 1858). Glen Shee (Ewing 1884). 



This beautiful moss has never been found in fruit, and the supposed fertile 

 specimen of Leibman was due to capsules of A . lapponicum growing intermixed. 

 The cable-like twisting of the leaves is still more pronounced than in G.funalis, 

 and in the upper part of them they are also curiously inflexed, and then 

 reflexed, but when moist the whole plant is exceedingly soft and flaccid. 

 G. streptophylla KINDB. from Kongsvold differs in its wider areolation. 



9. GRIMMIA STIRTONI Schimp. 



Dioicous ; in short black tufts. Leaves dense erecto-patent, small, 

 narrowly lane, upper with smooth longish hair points, margin plane, 

 cells but little incrassate, quadrate, minute and opake toward apex. 

 (T. XLVII, F.) 



SYN. Grimmia Stirtoni SCHIMP. Synops. 2 ed. 270 (1876). HOBK. Syn. br. m. 2 ed. 124(1884). 

 Dioicous ; laxly tufted, ^ in. high, dull black, lurid green at 

 apex, fuscous and radiculose at base. Stems dense leaved, dichotomous 

 and fastigiate branched. Leaves erecto-appressed when dry, erecto- 

 patent and incurved in upper part when moist, small and narrow, 

 concave, the lower lanceolate, muticous, the upper longer, from a 

 more elongate base, lanceolate, ending in a terete nearly smooth hair, 

 one-third length of leaf ; margin plane and erect below, thickened 

 above ; nerve terete, vanishing at apex ; cells at base close, rectangular, 

 soon becoming quadrate, not sinuose, towards apex more incrassate, 

 minute, opake. 

 HAB. Basaltic rocks near Glasgow. (Dr. Stirton 1866) ! 



This moss resembles a small state of G. elotigata, but its structure is more 

 that of G. pulvinata, from which however it differs by its much smaller, 

 narrower leaves, with firmer quadrate basal areolation, from the former the 

 non-sinuose areolation and form of leaf-base sufficiently distinguish it. 



10. GRIMMIA MUEHLENBECKII Schimp. 



Dioicous; laxly pulvinate, hoary. L. dense, patulous ; elongato-lanc., 

 nerve thick, channelled at back, the hair-point very rough. Caps. 



