}2. Z. nana, Roth. Native. Maritime. English type. Area N, D. Range 1.
Gathered in plenty at Blyth by John Storey, at Hartlepool by Albany Hancock, and at Seaton Carew by W. Backhouse.
Order 11. ARACEAE.
1. LEMNA, L.
1. L. minor, L. Native. British type. Area C, N, D. Range 1.
Everywhere common in ponds and ditches in the low country.
2. L. trisulca, L. Native. English type. Area C, N, D. Range 1.
Ponds and ditches, not known in Cheviot-land. Prestwick Carr, Wolsington, Hebburn, Tynemouth, Newcastle, Boldon, Ryton, Sunderland, Darlington, Stockton, &c.
2. ARUM, L.
1. A. maculatum, L. Native. English type. Area C, N, D.
Very rare in Cheviot-land, and doubted by Dr. Tate as a native. It occurs at Greensfield, Ellingham, and in Hulne Woods. Frequent in hedge-banks and in woods in Tyneland and Durham, ascending in Teesdale to 980 feet.
3. SPARGANIUM, L.
1. S. natans, L. Native. British type. Area N. Range 1.
The only station from which we have seen a specimen is the burn in Heaton Dene, where the true plant was gathered by John Storey. The old natans is now divided into two species, and we do not know to which of them to refer the following records. Watery places amongst the copsewood near Heathpool
