Ingham : Scapaniii calcicola, a New Bn'tisJi Hepatic. 1 1 



It is clear that they were not overswept by the ice at the time 

 that the Speeton moraine was formed, nor at any later stage. 

 But if evidence be found to indicate that they were covered at an 

 earlier period, I should take it very carefully into consideration. 

 Still, your materials scarcely sug'gfest an ice covering-, either from 

 the west or east. You are working- on interesting- lines, and I 

 advise you to continue.' 



It would indeed be interesting- if these quartzite pebbles 

 should be the only surviving- relics of some Pliocene, or, at any 

 rate, pre-glacial, deposits hitherto unrecog-nised in Yorkshire. 

 But at present the evidence is too slight to bear the w^eight of 

 such a conclusion. 



It may be remarked that in some high-level gravels of 

 uncertain age in the south of England, beyond the limits of the 

 Great Glaciation, quartzite pebbles also occur, and have given 

 rise to much speculation. 



SCAPANIA CALCICOLA: 

 A NEW BRITISH HEPATIC. 



WILLIAM INGHAM, B.A., 

 York. 



On the 24th September 1897 I gathered a Scapania, interwoven 

 with a moss, Ditrichiun flexicaule, in Jackdaw Crag Quarry, 

 Tadcaster. Both Mr. Macvicar and myself named it a ' curious 

 form of Scapania cequiloha.' A dry habitat like a magnesian 

 limestone quarry seemed a curious habitat for a member of the 

 genus Scapania, which, perhaps more than all other hepatics, 

 affects a wet and shady habitat. 



In No. 6, the last number of the ' Revue Bryologique ' for 

 1903, w^as a description of a new species of hepatic by Arnell 

 and Persson, and, on reading this description, I immediately 

 thought of my Jackdaw Crag Quarry plant, and identified it as 

 the new species. I sent a specimen to Mr. Macvicar, who said 

 it was quite likely to be Scapania calcicola Arnell & Persson. 

 To settle the question, I sent a specimen to the author of the 

 new species, Dr. Arnell, of Upsala, Sweden, and he has replied 

 that my plant is quite right. 



Scapania is known as a very difficult genus, and this new 

 species, which seems to me distinct, will throw further light 

 where light is so much needed. The following is my English 



1904 January i. 



