. An encyclopædia of agriculture : comprising the theory and practice of the valuation, transfer, laying out, improvement, and management of landed property, and of the cultivation and economy of the animal and vegetable productions of agriculture. to fade, afterwhich they again gradually sink down to the bottom toripen and to sow their seeds. This very peculiar economymay be exemplified in the case of Auppia maritima, andseveral species of /otamogeton common in our pondsami ditches. From this we may fairly infer, that theflowers rise thus to the surface merely to give the pollenan opportunity
. An encyclopædia of agriculture : comprising the theory and practice of the valuation, transfer, laying out, improvement, and management of landed property, and of the cultivation and economy of the animal and vegetable productions of agriculture. to fade, afterwhich they again gradually sink down to the bottom toripen and to sow their seeds. This very peculiar economymay be exemplified in the case of Auppia maritima, andseveral species of /otamogeton common in our pondsami ditches. From this we may fairly infer, that theflowers rise thus to the surface merely to give the pollenan opportunity of reaching the stigma uninjured. Butthe most remarkable example of this kind is the spiralis {Jig 196.), a plant which grows in theditches of Italy. The plant is of the class DiceVia, pro-ducing its fertile flowers on the extremity of a long andslender stalk (a) twisted spirally like a corkscrew, whichuncoiling of its own accord, about the time of the open-ing of the blossom, elevates the flowers to the surface ofthe water, and leaves them to expand in the open barren flowers (6) are produced in great numbers uponshort upright stalks issuing from a different root, fromwhich they detach themselves about the tune of the. 250 SCIENCE OF AGRICULTURE.
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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondo, bookyear1871
