A HISTORY OF CORNWALL 



PYRENOCARPEI (continued) PYRENOCARPEI (continued) 



Verrucaria*striatula, Wahl. Bedruthan Steps Verrucaria viridula, Schrad. E.G., Lizard, 



*sublitoralis, Leight. B.C., W.C. Trengwainton 



*tephroides, Ach. E.C., Penzance, Strigula *Babingtonii, Berk. IV.C. 



Land's End Melanotheca gelatinosa, Chev. Wlthiel 



umbrina, Wahl. Trengwainton *ischnobela, Nyl. W.C. 



FUNGI 



The published records of the species occurring in the county refer 

 almost exclusively to the western half and to the district around Penzance, 

 where the late Dr. Ralfs diligently explored the fungal flora for many 

 years, with the aid, during part of the time, of Mr. E. D. Marquand, 

 Mr. W. Curnow, and other well known botanists. Lists of the species 

 found were published by Dr. Ralfs in the Report and "Transactions of the 

 Penzance Natural History and Antiquarian Society for 18804, PP- 3^> 2 39> 

 292, 423, and for 1884, pp. 89, 379. A fuller account of them is given 

 in his manuscript Flora of West Penwith, already referred to, and to 

 that work through the kindness of Mr. F. C. Davey of Penzance, who 

 volunteered to copy the necessary information, the present writer is 

 greatly indebted. 



A number of species new to Britain were discovered by Dr. Ralfs 

 and his coadjutors, and these were also recorded in the volume of 

 Grevillea at intervals, from 1880 8. In the following list they are in- 

 dicated by an asterisk preceding the specific name. 



To economize space, the species which are recognized as common 

 have been omitted, in number about 84, exclusive of varieties. 



The flora of the Penzance district is so rich, that there is little 

 doubt that the unrecorded common species would readily be found if 

 searched for, and the number of rarities, discovered in so small a portion 

 of the county, indicates that many southern species not yet recorded for 

 Great Britain are likely to occur in the warmer valleys of Cornwall. 



The classification followed is that given in Cooke's Handbook of 

 British Fungi, but in many cases the names of species have been altered in 

 accordance with the progress of our knowledge of species, especially in 

 the Puccinieei, Cceomacei and CEcidiacei, in which many forms that were 

 formerly described as species are now known to be merely stages in the 

 life history of others. In these three groups the nomenclature adopted 

 is that of Dr. C. B. Plowright in A Monograph of the British Uredines 

 and Ustilagines, London, 1889. Where any difficulty may occur in 

 identifying species given in the following list, with the names given in 

 the work quoted, it can be solved by reference to the synonyms given 

 in Saccardo's Index Fungorum Unrversalis. 



Some species of fungi disappear from well known localities for many 

 years ; thus Polyporus beteroclitus, which was found at Lamorran in Sep- 

 tember 1882 by Dr. Ralfs, had not been found by any one else since 

 Bolton recorded it 100 years previously ; P. fragilis has disappeared 

 since the tree on which it grew near Penzance has been destroyed ; 

 Calocera cortica/is, which occurred abundantly on an old door, passed 



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