272 THE JOURNAL OF BOTANY 



var. edenhila (B. & S.) Par. (1906). Syn. Desmaiodon nervosus 

 var. edentulus B. & S. (1843). 2. This variety, new to the 

 British Islands, grows and intergrades with the type ; its 

 characteristic is the imperfectly developed peristome which is 

 sometimes reduced to a mere rim. I first found this plant at 

 the end of 1914 on a low cliff of " head " or gravel near Hannafore 

 Point, West Looe ; this station was afterwards destroyed by the 

 crumbling of the cliff. I afterwards saw it in minute quantity 

 in several places on the coast in Hannafore, West Looe ; and then 

 I found it growing for some yards on a roadside bank near 

 Talland, about two miles to the west of Looe, where the small red 

 rim to which the peristome is sometimes reduced was very 

 noticeable. In 191G I observed it growing fairly plentifully in 

 one place on the clay sea cliffs at Portnadler, to the west of Looe ; 

 of plants from the last locality, Mr. Dixon wrote, " The Tortula 

 atrovirens is most of it very well marked var. edentula." It was 

 first described from the Cape of Good Hope, and then was found 

 in Spain, and Normandy and Brittany. Mr. Dixon also recorded 

 it from Teneriffe (Journ. Bot. 1911, p. 3) as follows (in a list of 

 mosses collected by Dr. Salter) : " Old lava flow, Guimar. This 

 is probably the var. edentula (B. & S.) Par., having the peristome 

 teeth very short and fragmentary, and arising from a somewhat 

 broad, papillose basal membrane. The degree of development of 

 the teeth varies, however, a good deal, and the variety would seem 

 to be of dubious value." — T. cuneifolia Eoth. 2. Fruiting on 

 rock at two places on the coast to the east of Looe, viz. near 

 Millendraeth Beach and near Windsworth. — T. IcBvijnla var. 

 IcevivilcBformis. 1,* 2." Trees at Lambriggan, near Perranporth 

 (v.c. 1), Idless, near Truro (v.c. 1), and Talland, Polperro (v.c. 2), 

 all the plants were assigned to this var. by Mr. Dixon, though 

 they lacked the foliose gemmae (i?.). — T. ruralis Ehrhr. 2. Of 

 restricted occurrence near Polperro (-R.). — T. ruraliformis Dixon. 

 1. Perran Sandhills (R.). 



Barbtda tophacea Mitt. 2. On a calcareous rock face 

 (possibly old mortar) in Polperro valley {R.) ; on rock near 

 Hannafore Point, West Looe, also c.fr. on rock on the coast 

 close to East Looe ; Barhula tophacea, B. cylindrica, OrthotricJmm 

 anomahim var. saxatile, Eurynchmm tenellum, and E. circinatiim 

 growing in the town of Looe, indicate the presence of hme in the 

 Lower Devonian Rocks. — B. cylindrica Schp. 2. Very fine and 

 abundant on the rock face in West Looe near the Bridge. B. 

 Hornschuchiana Schultz. 2." In fair plenty on the ground near 

 and east of the Lawn Tennis Courts, Hannafore Point, West 

 Looe. — B. convoluta var. Sardoa B. & S. 2. Fine and very 

 common on rock between Hannafore Point and the Bridge. 



Weisia viridula Hedw. 2. Abundant on the Looe Cliffs. — 

 W. mucronata B. & S. 1." Downs above the cliff at St. Agnes 

 (B.).—W. verticillata Brid. 1. Cliff at Perranporth {B.). Mr. 

 Rilstone sends the following interesting note : "A noteworthy 

 feature of the moss flora of the Perranporth area is the calcareous 

 type of the sandhill plants (the sand is 50 per cent, carbonate of 



