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 1 06
