thallus

How To Use thallus In A Sentence

• Thallus usually verrucose, areolate or subareolate, tending toward squamulose conditions, better developed than in other members of the family, scarcely ever showing granulate conditions, and never disappearing entirely; apothecia also larger than in the other genera, adnate to immersed, usually black, but rarely white-pruinose; hypothecium usually dark brown; hymenium pale to light brown; spores Ohio Biological Survey, Bull. 10, Vol. 11, No. 6 The Ascomycetes of Ohio IV and V
• The stipe of the mushroom and the thallus of red algae (e. g. Porphyra) are pseudoparenchymatous tissues.
• Sphenothallus Hall, 1847 is a widespread Paleozoic marine taxon that has been interpreted most recently as a tubiculous annelid or other ‘worm’ or as a thecate hydrozoan or scyphozoan cnidarian.
• Under certain conditions single cells of the gonidia become surrounded with a dense felt of hyphæ, these accumulate in numbers below the surface of the thallus, until at last they break out, are blown or washed away, and start germination by ordinary cell division, and thus at once reproduce a fresh lichen-thallus. Scientific American Supplement, No. 531, March 6, 1886
• In addition to the algae in lichens, bacteria are invariably associated with the lichen thallus.
• The cortical filaments are terminated by small swellings, called utricles, which form the external surface of the thallus.
• Thallus granulose to verrucose and subareolate, sometimes inconspicuous and evanescent; apothecia minute to middle-sized, adnate or more or less immersed, exciple usually prominent and persistent, but sometimes becoming covered, disk flat to convex; hypothecium and hymenium pale to brown; spores simple, hyaline, minute, numerous in each ascus. Ohio Biological Survey, Bull. 10, Vol. 11, No. 6 The Ascomycetes of Ohio IV and V
• Thallus commonly granulose, and often passing into verrucose and chinky conditions, but scarcely ever areolate, sometimes scant and evanescent; apothecia usually minute or small, and commonly adnate, exciple weak and often becoming covered; hypothecium and hymenium passing from pale through shades of brown, the former becoming darker than the latter, this rarely tinged blue or violet above; spores hyaline, 2-celled. Ohio Biological Survey, Bull. 10, Vol. 11, No. 6 The Ascomycetes of Ohio IV and V
• The thallus and rhizoid can be distinguished by their different patterns of cell division.
• Thallus of very minute inconspicuous and evanescent, brown-black granules; apothecia minute, 0.2 to 0.4 mm. in diameter, adnate, dark brown to black, scattered or clustered, plain with a thin concolorous exciple visible, to convex with the exciple finally covered; hypothecium dark brown; hymenium pale brown; asci clavate; paraphyses coherent-indistinct; spores oblong-ellipsoid, 9 to 15 mic. long and 5 to Ohio Biological Survey, Bull. 10, Vol. 11, No. 6 The Ascomycetes of Ohio IV and V