DATE. 
COLLECTOR. 
HERBARIUM. 
1295. Potamogeton Friesii, 
Rupr. 
Ponds, rivers , etc. 
Distrib. Europe. 
Sp. Tarlton Bridge, Lancs. ... ... 1880 ... S. Hailstone 
Ripon, Yorks. ... ... ... 1830 ... Rev. J. Dalton .. 
Newby, Yorks. ... ... ... 1830 ... ,, 
Burwell and Bottisham Fens, Cambs. 1829 ... ,, 
1296. Potamogeton pusillus, 
Linn. 
Rivers, ponds, etc. 
Distrib. Europe, N. Africa, N. America. 
Sp. Redcar, Yorks. 
Canal, at Burnley, Lancs. 
(var. tenuissimus, Fries.) 
Ripon, Yorks. 
Norton Ings, Malton, Yorks.... 
1800 ... 
1800 ... 
1830 ... 
1803 ... 
S. Hailstone 
Rev. J. Dalton 
W. Middleton .. 
1297. Potamogeton pectina- 
tus, Linn. 
Fresh and brackish waters. 
Distrib. Europe, N. Africa, N. Asia, 
N. America and Australia, 
v. 
Sp. Ripon, Yorks. ... ... ... 1830 ... 
Loch of Balgaries, Forfar ... ... 1842 ... 
River Trent, Newark, Notts. 
(var. marinus ) ... 1820 ... 
1298. Potamogeton flabeila- 
tus, Bab. 
Fresh and brackish waters, England 
and Ireland. 
Distrib. Europe, N. Africa, Asia, N. 
America. 
Sp. Near Blackpool, Lancs. ... ...(1830)... S. Hailstone 
1301. Zannichellia palustris, 
Linn. 
Fresh and brackish ditches and pools. 
Distrib. Europe, N, Africa, India. 
Sp. Shelford, Cambs. ... ... ... 1834 ... S. Hailstone 
Coatham, Yorks. ... ... ... 1820 ... Hustler ... 
Rev. J. Dalton .. 
Miss Carnegy 
W. Middleton .. 
S. Hailstone 
Rev. J. Dalton 
9 9 
9 9 
S. Hailstone 
99 
Rev. J. Dalton 
W. Middleton 
Rev. J. Dalton 
S. Hailstone 
W. Middleton 
S. Hailstone 
S. Hailstone 
