hypothallus

[ hahy-puh-thal-uhs, hip-uh- ]

/ ˌhaɪ pəˈθæl əs, ˌhɪp ə- /

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noun, plural hy·po·thal·li

[hahy-puh-thal-ahy, hip-uh-]. /ˌhaɪ pəˈθæl aɪ, ˌhɪp ə-/.

a layer of hyphae rimming the thallus of certain lichens.

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

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Origin of hypothallus

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

The hypothallus is quite distinct, extra-marginal, and in substance like to the peridial wall.
The North American Slime-Moulds|Thomas H. (Thomas Huston) MacBride
Stipe short, erect, brownish-red in color, standing on a thin hypothallus.
The Myxomycetes of the Miami Valley, Ohio|A. P. Morgan
Stipe short, reddish-brown to blackish, arising from a thin hypothallus.
The Myxomycetes of the Miami Valley, Ohio|A. P. Morgan
Stipe very short, plicate, red-brown, arising from a small hypothallus.
The Myxomycetes of the Miami Valley, Ohio|A. P. Morgan

Stipe short, tapering upward, expanding at the base into a small hypothallus.
The Myxomycetes of the Miami Valley, Ohio|A. P. Morgan