hypothallus

American  

[hahy-puh-thal-uhs, hip-uh-] / ˌhaɪ pəˈθæl əs, ˌhɪp ə- /

noun

hypothalli plural

1. a layer of hyphae rimming the thallus of certain lichens.

2. a filmlike residue at the base of the sporangia of certain slime molds.

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Other Word Forms

Noun Inflected Forms

• hypothalli
  plural

Etymology

Origin of hypothallus

From New Latin, dating back to 1850–55; see origin at hypo-, thallus

Example Sentences

See Examples For:

hypothallus

Stipe long, erect, gray to mouse-color, darker below, arising from a thin hypothallus.

From The Myxomycetes of the Miami Valley, Ohio by Morgan, A. P. (Andrew Price)

Stipe long, erect, brownish-red in color, expanded at the base into a small hypothallus.

From The Myxomycetes of the Miami Valley, Ohio by Morgan, A. P. (Andrew Price)

This genus is easily recognized by the tubular sporangia, destitute of capillitial threads, seated upon a strongly developed hypothallus.

From The North American Slime-Moulds A Descriptive List of All Species of Myxomycetes Hitherto Reported from the Continent of North America, with Notes on Some Extra-Limital Species by MacBride, Thomas H. (Thomas Huston)

Fries thought the species might represent a less perfectly-developed reticularia, and therefore wrote Reticularia olivacea noting, however, the clustered spores and the lack of hypothallus.

From The North American Slime-Moulds A Descriptive List of All Species of Myxomycetes Hitherto Reported from the Continent of North America, with Notes on Some Extra-Limital Species by MacBride, Thomas H. (Thomas Huston)

Stipe not very long, erect, tapering upward, bent at the apex, purplish-brown, the apex pale and pellucid, standing on a small hypothallus.

From The Myxomycetes of the Miami Valley, Ohio by Morgan, A. P. (Andrew Price)