View source for Prothallus

'''prothallus''' ([[Category:Noun]][[:Category:Noun|noun]], ''pl.'' prothalli) – a [[primal thallus]] persistent as black rim or outline along the periphery of [[crustose]] [[thalli]]; composed of radiating, branched hyphae or hyphal bundles; forming a white, reddish or blue-black [[weft]] devoid of [[photobiont]] cells, sometimes projecting far beyond the [[thallus]] across the [[substrate]]; if extending between the [[areole]]s or [[thallus lobe]]s better referred to as [[hypothallus]].

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