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summer it is left uncovered upon the shore; and the
Isoetes, being one of the few plants which perfect their
fructification under water, has its leaves pulled up by
water-fowl, in the winter season, to extract the seeds which lie
concealed in their bases.
Several species of Pond-weed, Potamogeton, grow in most of
the Lakes. Myriophyllum spicatum and Sium inundatum
inhabit slow streams and shallow parts of lakes. Chara
flexilis grows in shallow, and C. vulgaris in deeper
parts of Derwent Lake. Sparganium ramosum, in ditches in
Underskiddaw, and near the Ferry point on Windermere. S.
natans, in Derwent Lake; both of these, with S.
simplex, may be found in Naddle beck near Keswick. Typha
latifolia[1] also grows at the last mentioned place; Typha
angustifolia in Rydal Water.
The spongy shores of the lakes and pools are margined with
Equisetum limosum; Hippuris vulgaris grows in
ditches near Cartmel Well; Cladium Mariscus, on the edge
of Cunswick Tarn, near Kendal.
Water Crowfoot, Ranunculus aquatilis, in the river
Derwent, in the Kent at Kendal, and at Pooley Bridge. OEnanthe
crocata, in the river Brathay. Water Scorpion-grass, or
Forget-me-not, Myosotis palustris, and Water-Plantain,
Alisma plantago, are common in ditches; Alisma
natans
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