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''Polypodium vulgare'', the common polypody, is a fern of the Polypodiaceae family. Polypody has traditional uses in cooking for its aroma and sweet taste, and in herbal medicine as a purgative and vermifuge. == Description == ''Polypodium vulgare'', the common polypody, is a fern developing in isolation from along a horizontal rhizome. The fronds with triangular leaflets measure 10 to 50 centimetres. They are divided all the way back to the central stem in 10 to 18 pairs of segments or leaflets. The leaflets become much shorter at the end of the frond. The leaflets are generally whole or slightly denticulated and somewhat wider at their base, where they often touch each other. They have an alternating arrangement, those on one side being slightly offset from those on the other side. The petioles have no scales. The sori are found on the lower side of the fronds and range in colour from bright yellow to orange. They became dark grey at maturity. * Period of sporulation: July to September. * Mode of dissemination: anemochory (wind dispersal). ''P. vulgare'' is an allotetraploid species of hybrid origin, its parents being the diploids ''Polypodium appalachianum'' and ''Polypodium glycyrrhiza''. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Polypodium vulgare」の詳細全文を読む スポンサード リンク
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