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Any of a group of organisms, including the algae, fungi, and lichens, that show no differentiation into stem, root, or leaf and were formerly regarded as constituting a subkingdom of the plant kingdom.

thal′lo·phyt′ic (-fĭt′ĭk) adj.


(Biology) obsolete any organism of the former division Thallophyta, lacking true stems, leaves, and roots: includes the algae, fungi, lichens, and bacteria, all now regarded as separate phyla
[C19: from New Latin thallophyta, from Greek thallos a young shoot + phuton a plant]
thallophytic adj


(ˈθæl əˌfaɪt)

any of the Thallophyta, a plant division in some older classification schemes, comprising algae, fungi, and lichens.
[1850–55; < New Latin Thallophyta. See thallus, -o-, -phyte]
thal`lo•phyt′ic (-ˈfɪt ɪk) adj.


A plantlike organism that resembles a thallus, such as a fungus.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.thallophyte - any of a group of cryptogamic organisms consisting principally of a thallus and thus showing no differentiation into stem and root and leaf
cryptogam - formerly recognized taxonomic group including all flowerless and seedless plants that reproduce by means of spores: ferns, mosses, algae, fungi
References in periodicals archive ?
Thallophyte vegetation supposedly had occupied terrestrial habitats long before vascular land plant vegetation evolved (BOMFLEUR & al.
Dubai: Try spelling the words syzygy, thallophyte, xanthoma, taupe or simulacrum each in less than two minutes on the spot without the aid of your trusted friend -- Google -- or a dictionary?
The great diversity of thallophyte life cycles meant examples could be found that appeared to fit either theory.
Up from the mineral and mud and ore, from mildew and bacterium and mold and thallophyte and spore to fungus, rust, and diatom; from moss and fern and flowering seed to coral, fluke, and sponge, and from flatworm and snail and centipede to swamp to land until we come to mouse, to monkey--to the brain that grew in tandem with the thumb: To tell exactly how we came from clay is easy.