320 Mr. W. Mitten on the Mosses and Hepaticce of Sussex. 



82. W. mucronata, Bruch. 



Gymnostomum ru titans, Hedw. Sp. Muse. t. 3. f. 8-11. 

 Not very common on clayey banks about Hurstpierpoint. 

 Doubtfully distinct from the following species. 



83. W. viridula (Linn.), Brid. 



W. controversy Hedw. Eng. Fl. 

 Very common and variable in appearance. 



84. W. cirrhata, Hedw. 



Frequent on wooden fences ; sometimes on thatch, on trees, and on 

 the sand rocks. 



85. W. crispula, Hedw. 



Harrison's Rocks, Mr. Borrer, 1810, from whose specimens gathered 

 there, the * Eng. Bot/ figure was drawn. 



86. W. verticillata, Brid. 



On mortar between bricks round a spring near Hurstpierpoint ; and 

 about the Dripping Well at Hastings. 



87. W. tenuis (Schrad.), C. Miiller. 

 Gymnostomum tenue, Schrad. Eng. Fl. 



In the stone-pit at Henfield, but barren. 



Genus 7. Grimmia, Ehrh. 



88. G. apocarpa, Hedw. 



Not uncommon on walls and roofs ; on exposed flints on the Downs, 

 and on the sand rocks at Tunbridge Wells. 



89. G. pulvinata, Hook, and Tayl. 

 Very common on walls and roofs. 



90. G, trichophylla, Grev. 



Rare : it has been gathered in small quantity by Mr. Borrer on 

 some Druidical stones near Brighton, and on a roof at Henfield ; it is 

 also found on a stone wall at Henley Hill, and on rocks at Tunbridge 

 Wells. 



91. G. acicularis (Hedw.), C. Miiller. 

 Trichostomum aciculare, Hedw. Eng. Fl. 



On rocks about Tunbridge Wells, and on a wall at Henley Hill. 



92. G. lanuginosa (Hedw.), C. Miiller. 

 Trichostomum lanuginosum, Hedw. Eng. Fl. 



On a rock at Henley Hill. It was formerly found on heaps of 

 flints on the Downs near Patcham, by Mr. Borrer. 



93. G. canescens (Hedw.), C. Miiller. 

 Trichostomum canescens, Hedw. Eng. Fl. 



In very small quantity on Woolsonbury Hill, and about Tunbridge 



