XORTHlTMnEELANP AND DrRlIAM. 267 



2. Z. /iuna, Roth. J^Tative. Maritime. English type. Area 

 X, 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. ARACE^. 



1. LEMNA, L. 



1. Z. minor, L. IS'ative. British type. Area C, JS", D. 



Eange 1. 



Everywhere common in ponds and ditches in the low country. 



2. Z. trisulea, L. Native. English type. Area C, N, D. 



Range 1. 



Ponds and ditches, not known in Cheviot-land. Prestwick 

 CaiT, "Wolsington, Hebburn, Tynemouth, J^Tewcastle, Boldon, 

 Ryton, Sunderland, Darlington, Stockton, &c. 



2. ARUM, L. 



1. A. maculatum, L. IN'ative. English type. Area C, 



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 

 bum in Heaton Dene, where the true plant was gathered by 

 John Storey. The old natam is now divided into two species, 

 and we do not know to which of them to refer the following 

 records. AVatery places amongst the copscwood near Heathpool 



