BOTANY FILICES, EQUISETACE/E, LYCOPODIACE^E, MARSILEACE^ The ferns of Cornwall run into a goodly number. A few of them are very local and scarce, and one or two have only a single station against them. The controversy about 'Trichomanes radicans at Tintagel has long been silenced, most botanists being satisfied of the bona fides of the record ; but whether it was a native or a naturalized subject must always remain a matter of conjecture, as the plant was soon lost to the locality. Adiantum Capillus-Veneris cannot much longer hold out against the phytological plunderer. One by one its old stations have had to be expunged from county lists until the ' irreducible minimum ' is nearly reached. In the subjoined table where it has been known to occur rather than where it may now be found is indicated. Equisetum sylvaticum was found on Cornish soil for the first time nearly twenty years ago. It is restricted to a small area in the parish of Week St. Mary. The other four species of Equisetum are generally distributed over the county. FILICES Lastraa dilatata, Presl. Hymenophyllum tunbridgense, Sm. i, 3-8 b. tanacetifolia, Moore. 3, 6 - unilateralc, Bory. I, 2, 4, 5 aemula, Brackenbridge. 1-8 [Trichomanes radicans, Sw.]. I Polypodium vulgare, Linn. 1-8 Adiantum Capillus-Veneris, Linn, i, 4-6, 8 b. serratum, Willd. Pteris aquilina, Linn. 1-8 c. Cornubiense, Moore. 6 Cryptogramme crispa, R. Br. 8 Phegopteris Dryopteris, Fee. i, 4, 6 Lomaria spicant, Desv. 1-8 polypodioides, Fe. 4, 6, 8 Asplenium lanceolatum, Huds. 1-8 Osmunda regalis, Linn. 1-8 c. microdon, Moore. 8 Ophioglossum vulgatum, Linn, i, 2, 4-8 Adiantum-nigrum, Linn. 1-8 b. polyphyllum, Braun. 8 b. obtusum, Kit. & Milde. 5, 6 Botrychium Lunaria, Sw. i, 2, 4, 8 d. acutum, Poll. 6 EQUISETACEJE marmum, Linn. 1-8 Equisetum maximum, Lam. i, 6-8 Trichomanes, Linn. 1-8 _ arvense) L inn. 1-8 Ruta-muraria, Linn. 1-8 _ sy i vaticuni) Linn . , Athynum Fihx-fcemma, Roth. 1-8 _ pa i ustre> Linn. 1-8 Ceterach officinarum, Willd. 1-8 b polystachyum, auct. 5, 6 Scolopendnum vulgare, Adans. 1-8 <:. nudum, Newm. 1,3,6,8 Polystichum lobatum, Presl. 4, 8 _ limosum> Sm . j_ 6> 8 b. aculeatum Syme. 2, 4-8 ^ fluviatile (Linn.). 2, 4-6 angulare, Presl. 1-8 Lastrsa Oreopteris, Presl. 1-4, 6-8 LYCOPODIACEJE Filix-mas, Presl. 1-8 Lycopodium Selago, Linn. 3, 4, 7 c. palacea, Moore, i, 2, 4 "ndatum, Linn. 3, 6-8 spinulosa, Presl. 1-4, 6-8 clavatum, Lmn. 1-3, 6, 7 d. glandulosa (Moore, ex p.). i MARSILEACE;E dilatata, Presl. 1-8 Pilularia globulifera, Linn. 4, 6-8 CHARACE^E Before the final word can be written about the Characeae of Corn- wall, a great deal of systematic field work must be done. Strictly speaking, less than one-third of the county has been thoroughly searched. From the Tamar to Redruth there is an unbroken stretch of practically virgin ground for this particular class of plants, and the well-known fact that the unexpected always attends the movements of the Chara hunter, and that as recently as 1898 in Nitella hyalina Cornwall gave Great i 73 10
