WLISSIEI. 293 



base, red, entire ; leaf-cells above minute, but distinct, sub- 

 quadrate, gradually larger downwards, elongated, and more 

 hyaline at the base. 



4. W. crispula, Hedw. ; tufted, branched ; leaves spreading 

 or secund, lanceolato-subulate from a broad concave base, 

 crisped when dry ; margin plane ; sporangium oval or oblongo- 

 ovate ; ring none; lid rostrate. Hook, fy Wils. t. xv. ; Eng. 

 Bot. t. 2203. ; (Moug. fy Nest. n. 812.) 



In crevices of alpine rocks. Bearing fruit in summer. 



Monoicous ; csespitose or pulvinate. Distinguished by the 

 plane margin of the leaves, which are longer and narrower 

 above, the less cylindrical sporangium, etc. Leaf-cells as in 

 the last. 



5. W. verticillata, Brid. ; stems fastigiate; leaves narrow, 

 linear-lanceolate, toothed below; margin plane, granulated 

 above; nerve strong, slightly excurrent; teeth oblique; lid 

 rostrate. Hook, fy Wils. t. xv. ; Eng. Bot. t. 1258. ; (Moug 

 fy Nest. n. 507.) 



On dripping calcareous rocks and stones. Bearing fruit in 

 summer. 



Dioicous ; forming dense tufts, often incrusted with a calca- 

 reous deposit. Leaves glaucous, scarcely crisped when dry ; 

 leaf-cells quadrate above, distinct, rectangular below ; sporan- 

 gium ovate ; teeth inclined to the right-hand, deciduous. 



This constitutes the genus Eucladium, Br. & Schimp., but 

 I think Wilson has done right in retaining it in Weissia. 



107. GYMNOSTOMTJM, Hedw. 



Sporangium erect, on a straight fruitstalk ; veil large, cu- 

 cullate, rostrate ; peristome none, but sometimes the ring of 

 the sporangium remains attached to the top of the columella. 



