Page:Journal of botany, British and foreign, Volume 9 (1871).djvu/88

 74 A SUPPLEMENT TO THE ' FLORA VECTENSIS.'

Cotliey Bottom Copse, given in the 'Flora Vectensis ' as a locality for " R. aquafilis, var. fantoihrix" this being doubtless the same plant which is called " R.JIuitaus?'' by Dr. Brorafield, in the ' Phytologist,' vol. iii. p. 290 ; but the true R.Jluitaus, 8ibth., has not been found in the Isle of Wight.

R. Dronetii, Schultz. Ditches ia the marsh on north side of Bradiiig Harbour, where the floating leaves are sparingly produced (1856). Ditches in the marsh at Freshwater Gate ! (A. J. Harabrough).

R. lieteropJnjUus, Sibth. In several ponds near Bembridge, etc., but not common in the Isle of Wight. A form without floating leaves occurs in the marsh ditches on the north side of Brading Harbour. Specimens of this are preserved in Dr. Bromfleld's herbarium under the name of " R. circinaius," Sibth., which has not yet been found.

R. BaudoUi, Godr. Ditches on the north side of Brading Harbour, abundantly (1856) ; also in a pond between the harbour and Yaverland Farm. In Saltern's Marsh between Sea Yiew and Springvale.

R. peltatns, Fries. Common. By this name I understand a large- flowered and luxuriant plant, which is abundant in the marsh ditches near Sandown, and in many other parts of the island. The early floating leaves are often nearly peltate, with five rounded sub-entire lobes (var. quinqnelobus, Koch), but the leaves produced later in the season are reui- form, often nearly truncate at the base, with a tendency in this case to become three-lobed, the central lobe being separated from the others, still it is rounded at the margin, and nearly always entire. This is prolDably the variety named " tnuicutm " in the French Floras of Cherbourg and Dinan, and I believe it is also this plant which, in rapid streams, becomes R. pseudo-flidtans, in which the truucate-reniform shape of the floating leaves still continues, but their segments become more acute, and are often drawn out at the tip into long points.

From R. peUatm I do not feel any confidence in separating R.jlori- bundus, though I believe the name may fairly be applied to a plant with the peltate floating leaves more deeply divided, and their segments more notched, and which I have gathered, here and there, in ponds and ditches in various parts of the Isle of Wight. It is to be noted that, as in others of this section, the early flowers of R. peltatns are much larger, and the petals more full and rounded, than those which are produced later in the season.

R. Lenormandi, Schultz. Plentiful on several parts of Pan Connnon, especially at the western end. In a ditch close to Alverstone Lynch. Ditches in the Wilderness at Hookley, and near Lashmere Pond. Far less common with us than R. hederaceus, and apparently restricted to a sandy soil.

R. hederaceus, L. At Hillways, Bembridge. On Pan Common. At Luccombe, near the Chine. Lashmere Pond. Freshwater Gate, etc. Pan, near Newport (F. Stratton).

R. Flammida, var. pseudo-reptam, Syme. In boggy ground at Fresh- water, Rookley, Blackwater, etc. (F. Stratton). This is very ditferent in appearance from the plant Avhich gi'ows on the shores of mountain lakes, and is probably no more than a procumbent form of growth assumed in autumn by R. Flammiila.

R. Ficaria, L. Near Bembridge, I have sometimes found root-leaves with rounded and overlapping lobes, but the outer phyllodes are not half

�� �