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Thallus (pl.: thalli), from Latinized Greek θαλλός (thallos), meaning "a green shoot" or "twig", is the vegetative tissue of some organisms in diverse groups such as algae, fungi, some liverworts, lichens, and the Myxogastria.
Its thallus is filamentous, initially organized as a main primary filament composed of elongated cells and round cells, from which branches differentiate. [5] E. siliculosus is a tufted plant, often only one to a few cm tall, but in exceptional cases up to 20 cm. [1] It has axes that are freely branched, and the main axis is not distinguishable ...
A fungus that lives within the thallus of a lichen without producing any visible symptoms of disease; these fungi are transmitted horizontally. [165] Lecidea laboriosa is an endolithic lichen; the thallus, hardly visible, grows under and around the rock crystals, while the apothecia are visible on the surface. endolith Also endolithic.
The thallus is the vegetative body of a lichen that contains the lichen mycobiont (fungus) and the photobiont (algae and/or cyanobacteria). In P. acicularis, the primary thallus (thallus horizontalis) is spread out like a granular crust on the surface of its substrate. It is light green when young, but becomes gray in age or when dry. [16]
The vegetative structure of Conocephalum is a thallus which has the appearance of a flattened body of plant tissue. [5] [22] The thallus is irregularly branched [4] and relatively large, reaching lengths of roughly 20-24 cm. [4] [5] In contrast to C. conicum and C. salebrosum, the thallus of C. supradecompositum is relatively small, measuring 2 ...
The thallus is perennial with an irregular or disc-shaped holdfast or with haptera. [1] The erect portion of the thallus is dichotomous or subpinnately branched, flattened and with a distinct midrib. Gas-filled pneumatocysts (air-vesicles) are present in pairs in some species, one on either side of the midrib.
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Thallus or Thallos (Greek: Θαλλός), perhaps a Samaritan, [1] was an early historian who wrote in Koine Greek. He wrote a three-volume history of the Mediterranean world from before the Trojan War to the 167th Olympiad , 112–108 BC, or perhaps to the 217th Olympiad (AD 89-93) or 207th Olympiad (AD 49-52).