Mr. W. Mitten on the Mosses and Hepaiica of Sussex. 311 



Tribe III. Pottiace^. 

 Grenus 1. Schistidium, Brid. 



28. S. Floerkeanum (Web. et Mohr), Mitten. 

 Acaulo7i Floerkeanum, C. Miiller, Synops. p. 21. 



Frequent in stubbles on chalky or clayey soils. 



29. S. muticum (Schreb.), Mitten. 



Acaulon muticum, C. Miiller, Synops. p. 22. 

 Phascum muticum, Scbreb. Eng. Fl. 

 On banks and in stubbles, not very common. 



30. S. triquetrum (Spruce), Mitten. 



Phascum triquetrum. Spruce in Eng. Bot. Suppl. 1901. 

 Acaulon triquetrum, C. Miiller, Synops. p. 22. 

 On the cliffs between Brighton and Xewhaven. 



Genus 2. Pottia, Ehrh., C. Miiller. 



31. P. cuspidata (Schreb.), Mitten. 

 Phascum cuspidatum, Schreb. Eng. Fl. 



Common in stubbles and on banks. 



32. P. curvicolla (Hedw.), Mitten. 

 Phascum curricollum, Hedw. Eng. Fl. 



Not unfrequent about the Downs. 



33. P. recta (With.), Mitten. 

 Phascum rectum. With. Eng. Fl. 



More frequent than the preceding, and often growing with it, but 

 seldom seen off the chalk. 



34. P. hnjoides (Dicks.), Mitten. 

 Phascum bryoides, Dicks. Eng. Fl. 



On the coast at Aldrington near Brighton, and on the chffs between 

 Brighton and Xewhaven ; it has also been met with by Mr. Borrer on 

 the Downs at Piecombe and near Lewes, and near the Devil's Dyke. 



35. P. cavifolia, Ehrh. 

 Gymnostomum ovatum, Hedw. Eng. Fl. 



Cliffs and walls between Brighton and N^ewhaven, and about Hove, 

 also at Hurstpierpoint, but almost confined to the coast. 



36. P. crinita, Wils. 



Rare : growing intermixed with P. Heimii amongst the shingle at 

 Aldrington. 



37. P. rVilsoni, B. et S. 

 Gymnostomum Wilsoni, Hook. Eng. Fl. 



On a sandy bank at Barrow HUl, Henfield, where it has been 

 known to Mr. Borrer for many years. 



C. Midler refers hither with doubt the Gymnostomum truncatulum, 



