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.

Generic synonyms: Division
Group relationships: Kingdom Plantae, Plant Kingdom, Plantae

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

1. A primary division of plant-like organisms including all forms consisting of one-celled and cell aggregates not clearly differentiated into root, stem, and leaf, includes algae, fungi, and lichens. (09 Oct 1997)

Thallophyta Pictures

Click the following link to bring up a new window with an automated collection of images related to the term: Thallophyta Images

Lexicographical Neighbors of Thallophyta

thallium 201
thallium heart scan
thallium poisoning
thallium radioisotopes
thallium stress test

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 ..."

Other Resources Relating to: Thallophyta

Search for Thallophyta on!Search for Thallophyta on!Search for Thallophyta on Google!Search for Thallophyta on Wikipedia!