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Experiments of our own have led to the conclusion, that some families of aquatic plants are altogether unsuitable for the Parlour Aquarium such as, potamogeton, chara, &c., which very soon communicate a putrescent odour to the water in which they are grown, rendering it highly disagreeable in a sitting-room. Naturalist, vol. i. 239.
Pinus abies, spruce fir. Taxus baccata, yew. Nuphar luteum, yellow water-lily. Ceratophyllum demersum, hornwort. Potamogeton, pondweed. Prunus spinosus, common sloe. Menyanthes trifoliata, buckbean. Nymphaea alba, white water-lily. Alnus, alder. Quercus, oak. Betula, birch.
Vincent Island, near Apalachicola, Florida, in the northern edge of the Gulf of Mexico. It was purchased in 1909 by Dr. Ray V. Pierce, and his guests kill perhaps one hundred ducks each year out of the thousands that flock to the ten big ponds that occupy the eastern third of the island. Into those ponds much good duck food has been introduced, Potamogeton pectinatus and perfoliatus.
Other larger leaves belong to the Amphibious Polygony, and different species of the Potamogeton, the ears of whose blossoms rise curiously above the surface of the water.
He tugs downwards and backwards, but too late; the drop-fly is fast wrapt in Ceratophyllum and Glyceria, Callitriche and Potamogeton, and half-a-dozen more horrid things with long names and longer stems; and what remains but the fate of Campbell's Lord Ullin? 'The waters wild went o'er his child, And he was left lamenting.
On the shaded riverbanks grew abundance of English genera Cynoglossum, Veronica, Potentilla, Ranunculus sceleratus, Rumex, several herbaceous Compositae and Labiatae; Tamarix formed a small bush in rocky hillocks in the bed of the river, and in pools were several aquatic plants, Zannichellia, Chara, a pretty little Vallisneria, and Potamogeton.
I have mentioned a small round eatable tuber, which I found in the basket of a native gin on the 2nd January. I here found it to be the large end of the tap root of a Potamogeton, or a plant nearly allied to that genus; I found it with another interesting water-plant, with foliated spikes of blue flowers, in a small water-hole near our last camp. April 23.
I have stated that fresh-water fish eat some kinds of seeds, though they reject many other kinds after having swallowed them; even small fish swallow seeds of moderate size, as of the yellow water-lily and Potamogeton.
And there began a growth of rushes and equisetum and potamogeton that ended only with the drying of the pond. It speedily became evident to the public mind that this time there was not simply one centre of distribution, but quite a number of centres.
I have stated that fresh-water fish eat some kinds of seeds, though they reject many other kinds after having swallowed them; even small fish swallow seeds of moderate size, as of the yellow water-lily and Potamogeton.
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