Definition of thallus

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Thallus (n.) A solid mass of cellular tissue, consisting of one or more layers, usually in the form of a flat stratum or expansion, but sometimes erect or pendulous, and elongated and branching, and forming the substance of the thallogens..

Lern More About Thallus

Stromatic :: Stroma (n.) A layer or mass of cellular tissue, especially that part of the thallus of certain fungi which incloses the perithecia..
Thalloid :: Thalloid (a.) Resembling, or consisting of, thallus..
Thallogen :: Thallogen (n.) One of a large class or division of the vegetable kingdom, which includes those flowerless plants, such as fungi, algae, and lichens, that consist of a thallus only, composed of cellular tissue, or of a congeries of cells, or even of separate cells, and never show a distinction into root, stem, and leaf..
Prothallus :: Prothallus (n.) The minute primary growth from the spore of ferns and other Pteridophyta, which bears the true sexual organs; the oophoric generation of ferns, etc..
Athalamous :: Athalamous (a.) Not furnished with shields or beds for the spores, as the thallus of certain lichens..
Thallus :: Thallus (n.) A solid mass of cellular tissue, consisting of one or more layers, usually in the form of a flat stratum or expansion, but sometimes erect or pendulous, and elongated and branching, and forming the substance of the thallogens..
Thalline :: Thalline (a.) Consisting of a thallus.
Patella :: Patella (n.) A kind of apothecium in lichens, which is orbicular, flat, and sessile, and has a special rim not a part of the thallus..
Pagina :: Pagina (n.) The surface of a leaf or of a flattened thallus.
Oophore :: Oophore (n.) An alternately produced form of certain cryptogamous plants, as ferns, mosses, and the like, which bears antheridia and archegonia, and so has sexual fructification, as contrasted with the sporophore, which is nonsexual, but produces spores in countless number. In ferns the oophore is a minute prothallus; in mosses it is the leafy plant..
Thalamus :: Thalamus (n.) Same as Thallus.
Soredium :: Soredium (n.) A patch of granular bodies on the surface of the thallus of lichens.
Prothallium :: Prothallium (n.) Same as Prothallus.
Scutellum :: Scutellum (n.) A rounded apothecium having an elevated rim formed of the proper thallus, the fructification of certain lichens..
Merithallus :: Merithallus (n.) Same as Internode.
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