312 Mr. W. Mitten on the Mosses and Hepatica of Sussex. 



/3. solivagum, Brid. i. p. 69, sent by Green to Bridel from Hamp- 

 stead and Plumstead Heaths. P. eustoma grows in both places, and 

 so far as soil is concerned they are very likely to produce P. Wilsoni. 



38. P. eustoma, Ehrh. 



Gymnostomum truncatulum, Hedw. Eng. Fl. 

 Common on banks and in stubbles. 



39. P. Heimii, Furn. 



Gymnostomum Heimii, Hedw. Eng. Fl. 

 On the coast at Newhaven, Hove, Shoreham and Lancing. 



40. P. minutula (Schw.), Hampe. 

 Gymnostomum conicum, Schw. Eng. Fl. 



Very common in stubbles and waste places. 



■ 41. P. Starkeana (Hedw.), C. Miiller. 

 Weissia Starkeana, Hedw. Eng. Fl. 

 At Hove, and on the cliffs between Brighton and Newhaven ; not 

 rare in stubbles, but most frequent near the coast. 



42. P. ccespitosa (Bruch), C. Miiller. 



Anacalypta ccespitosa, B. et S. Bryol. Europ. Anacalypta, 

 p. 3. t. 2. 



* Csespitulosa, parvula; caule subramoso vel ramoso; foliis 

 patentibus, ovato- et oblongo-lanceolatis, concavis, margine haud 

 revolutis, costa in mucronem brevem excedente, perichaetialibus 

 vaginantibus ; capsula ovata, operculo longirostro, annulo unam 

 cellularum seriem sistente, peristomii dentibus plus minus per- 

 fects, in linea divisuriali obsoleta fissis vel pertusis." — Bryol. 

 Europ. I. c. 



Bare : on Woolsonbury Hill near Hurstpierpoint. 



Intermediate between P. Starkeana and P. lanceolata, but agree- 

 ing more nearly with the first ; it differs however in the form and 

 never reflexed margins of its leaves ; the three perichaetial leaves are 

 much widened and embrace the base of the yellow seta ; the capsule 

 is of a fine orange-brown when mature, ovate and not at all tapering 

 downwards into the seta ; just below the mouth it is a little con- 

 stricted ; the peristome is similar to that of P. lanceolata and equally 

 variable ; the calyptra is smooth and not scabrous as in P. Starkeana. 



43. P. lanceolata (Hedw.), C. Miiller. 

 Weissia lanceolata, Hook, and Tayl. Eng. Fl. 



Not uncommon, particularly about the Downs. 



Genus 3. Trichostomum, Hedw. 



44. T. cylindricum (Bruch), C. Miiller. 

 Weissia tenuirostris, Hook, and Tayl. Eng. Fl. 



On all the sand rocks, but always sterile. 



