Page:Transactions of the Natural History Society of Northumberland, Durham, and Newcastle-upon-Tyne (1867).djvu/317

14. OSMUNDA, L.

1. O. regalis Osmunda regalis, L. Native. British type. Area C, N, D. Range 1.

Formerly in several stations, but now extirpated in most or all of them. Routing Linn near Doddington (J. Mitchell). Chevington Wood near Warkworth (T.). Rowlands Gill near Tanfield (W. H. Brown !). Crook Hall Wood near Durham (Mr. Bungey). Once seen in Teesdale near Winch Bridge, 300 yards (James Backhouse).

15. BOTRYCHIUM, Sw.

1. B. lunaria Botrychium lunaria, Sw. Native. British type. Area C, N, D. Range 1, 2.

Frequent in grassy places, especially amongst the hills, ascending in the Cheviot tract to Langlee-ford Hope (James Hardy), to 400 yards in Langdon Dale, and rather higher in Rookhope.

16. OPHIOGLOSSUM, L.

1. O. vulgatum Ophioglossum vulgatum, L. Native. British type. Area C, N, D. Range 1.

Frequent in the meadows of the low country, but easily overlooked.

Order 2. MARSILEACEAE.

1. ISOETES, L.

1. I. lacustris Isoetes lacustris, L. Incognit.

Reported in the Flora from Crag Lough, probably by mistake for Litorella.

2. PILULARIA, L.

1. P. globulifera Pilularia, L. Native. British type. Area N. Range 1.

Submersed in ponds, rare. Prestwick Carr (F. R!), and gathered by Messrs. Waugh and Thornhill in a pond by the side of the road half-a-mile north of Wolsington House near Ponteland.