Definition of Thallophyta
1. Noun. Used only in former classifications: comprising what is now considered a heterogeneous assemblage of flowerless and seedless organisms: algae; bacteria; fungi; lichens.
Definition of Thallophyta
1. n. pl. A phylum of plants of very diverse habit and structure, including the algæ, fungi, and lichens. The simpler forms, as many blue-green algæ, yeasts, etc., are unicellular and reproduce vegetatively or by means of asexual spores; in the higher forms the plant body is a thallus, which may be filamentous or may consist of plates of cells; it is commonly undifferentiated into stem, leaves, and roots, and shows no distinct tissue systems; the fronds of many algæ, however, are modified to serve many of the functions of the above- named organs. Both asexual and sexual reproduction, often of a complex type, occur in these forms. The Thallophyta exist almost exclusively as gametophytes, the sporophyte being absent or rudimentary. By those who do not separate the Myxophyta from the Tallophyta as a distinct phylum the latter is treated as the lowermost group in the vegetable kingdom.
Medical Definition of Thallophyta
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Lexicographical Neighbors of Thallophyta
Literary usage of Thallophyta
Below you will find example usage of this term as found in modern and/or classical literature:
1. Strasburger's Text-book of Botany by Eduard Strasburger, Hans Fitting, William Henry Lang (1921)
"I. thallophyta (^ It was formerly customary to divide the thallophyta into Algae, Fungi, and Lichens. ..."
2. An Introduction to the Study of Fossils (plants and Animals) by Hervey Woodburn Shimer (1914)
"Bryophyta 42 III. Pteridophyta 44 IV. Spermatophyta 55 DIVISION I, thallophyta The ... The thallophyta include the following five sub-divisions : — PAGE A. ..."
3. The Natural History of Plants: Their Forms, Growth, Reproduction, and by Anton Kerner von Marilaun (1902)
"About 450 species have been distinguished. PHYLUM 2.—thallophyta. large and very heterogeneous collection of plant-forms is included under this erm. ..."
4. Organography of Plants, Especially of the Archegoniata and Spermaphyta by Karl Goebel (1900)
"FORMATION OF ORGANS AND DIVISION OF LABOUR AMONGST THE LOWER PLANTS (thallophyta). A plant-body in which the shoot-axis does not exhibit differentiation ..."
5. Sanitary Entomology; the Entomology of Disease, Hygiene and Sanitation: The by William Dwight Pierce (1921)
"Diseases of Plant Origin thallophyta: Fungi: Ascomycetes: ... thallophyta: Fungi: Hyphomycetes Malassezia species, causing the scaly skin diseases called ..."
6. Pharmaceutical Botany by Heber Wilkinson Youngken, Francis Edward Stewart (1914)
"PART II TAXONOMY DIVISION I.—thallophyta Plants consisting of a thallus, a body undifferentiated into root, stem or leaf. The group nearest to the beginning ..."