English definition of Fern

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Definition of fern

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Fern (n.) An order of cryptogamous plants, the Filices, which have their fructification on the back of the fronds or leaves. They are usually found in humid soil, sometimes grow epiphytically on trees, and in tropical climates often attain a gigantic size..

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Miltwaste :: Miltwaste () A small European fern (Asplenium Ceterach) formerly used in medicine.

Megaphyton :: Megaphyton (n.) An extinct genus of tree ferns with large, two-ranked leaves, or fronds..

Pteridology :: Pteridology (n.) That department of botany which treats of ferns.

Fiend :: Fiend (n.) An implacable or malicious foe; one who is diabolically wicked or cruel; an infernal being; -- applied specifically to the devil or a demon.

Kupfernickel :: Kupfernickel (n.) Copper-nickel; niccolite. See Niccolite.

Hellbroth :: Hellbroth (n.) A composition for infernal purposes; a magical preparation.

Filicoid :: Filicoid (a.) Fernlike, either in form or in the nature of the method of reproduction..

Stoma :: Stoma (n.) The line of dehiscence of the sporangium of a fern. It is usually marked by two transversely elongated cells. See Illust. of Sporangium.

Trichomanes :: Trichomanes (n.) Any fern of the genus Trichomanes. The fronds are very delicate and often translucent, and the sporangia are borne on threadlike receptacles rising from the middle of cup-shaped marginal involucres. Several species are common in conservatories; two are native in the United States..

Stipe :: Stipe (n.) The stalk or petiole of a frond, as of a fern..

Pecopteris :: Pecopteris (n.) An extensive genus of fossil ferns; -- so named from the regular comblike arrangement of the leaflets.

Lunary :: Lunary (n.) A low fleshy fern (Botrychium Lunaria) with lunate segments of the leaf or frond.

Indusium :: Indusium (n.) The immediate covering of the fruit dots or sori in many ferns, usually a very thin scale attached by the middle or side to a veinlet..

Acrogen :: Acrogen (n.) A plant of the highest class of cryptogams, including the ferns, etc. See Cryptogamia..

Acheron :: Acheron (n.) A river in the Nether World or infernal regions; also, the infernal regions themselves. By some of the English poets it was supposed to be a flaming lake or gulf..

Catadromous :: Catadromous (a.) Having the lowest inferior segment of a pinna nearer the rachis than the lowest superior one; -- said of a mode of branching in ferns, and opposed to anadromous..

Pteridophyta :: Pteridophyta (n. pl.) A class of flowerless plants, embracing ferns, horsetails, club mosses, quillworts, and other like plants. See the Note under Cryptogamia..

Ring :: Ring (n.) An elastic band partly or wholly encircling the spore cases of ferns. See Illust. of Sporangium.

Horsetail :: Horsetail (n.) A leafless plant, with hollow and rushlike stems. It is of the genus Equisetum, and is allied to the ferns. See Illust. of Equisetum..

Polypodium :: Polypodium (n.) A genus of plants of the order Filices or ferns. The fructifications are in uncovered roundish points, called sori, scattered over the inferior surface of the frond or leaf. There are numerous species..