GRIMMIA. 135 



narrow, almost smooth hair-point, faintly and narrowly recurved 

 at margin or plane, opaque in the upper part ; nerve terete and 

 well defined below, above obscure, pellucid ; cells elongate- 

 rectangular at base, and hyaline, above shorter, chlorophyllose ; 

 hyaline cells extending in two or three rows at margin higher than 

 in the middle of the leaf base ; cells in upper part quadrate-oval, 

 opaque. Dioicous. Capsule small, smooth, oval, on a slightly 

 curved seta, erect when dry, peristomate ; calyptra mitriform ; lid 

 conical, obtuse. Perichaetial bracts reaching as high as the 

 capsule. 



Hab. Siliceous rocks, rare. England ; Scotland ; Wales. Recently found in 

 abundance on one of the Clee Hills, Shropshire, by the Rev. C. H. Binstead. Fr. 

 rare, spring. 



The close dark tufts of this moss with much curled leaves resemble Dicranoweisia 

 crispula, and may very easily be taken for that plant ; the Grimmia is, however, 

 usually shorter, less glossy, with the leaves not quite so closely crisped when dry, 

 when moist not at all falcato-secund, but spreading in all directions and usually some- 

 what incurved at the point ; and the hair-points, when distinguishable with the lens, 

 afford a conclusive distinction. It cannot be confused with any other species of 

 Grimmia, nor, of course, under the microscope, with the Dicranoweisia. 



6. Grimmia funalis Schp. (Trichostomum funale Schwgr.) 



(Tab. XXI. J.). 



In dense smooth cushions, very easily breaking up when 

 gathered ; black below, grey or yellowish green above, stems 

 variable in length, but usually taller than in the last, 1-2^ inches 

 high. Leaves crowded, erecto-patent when moist, when dry 

 appressed and spirally enrolled, small, short (about half a line), 

 ovate-lanceolate , widest at about one-third from the base, not 

 much attenuated at point, carinate with the nerve prominent at 

 back, margin variously recurved, occasionally very faintly indeed, 

 thickened above ; hyaline point very variable, usually about % 

 length of leaf, sometimes exceeding the rest of the leaf, or very 

 short and almost obsolete, terete, quite smooth or minutely 

 denticulate, broad at base or narrow. Basal cells at angles 

 rectangular, hyaline, in two or three rows extending a short 

 distance up the margin, the median narrower, coloured (yellow or 

 chlorophyllose), those next the nerve very narrowly linear, with 

 thick, slightly sinuose walls ; above shorter, elliptic, chloro- 

 phyllose, sinuose, in upper part of leaf rectangular or quadrate, 

 the walls incrassate, smooth or slightly sinuose, rather pellucid, in 

 two strata near the apex. Seta very short, hardly longer than the 

 broad, concave perichaetial bracts, arcuate, pale yellow ; calyptra 

 small, mitriform, 3-5 lobed ; capsule small, faintly striate when 



