Abstract
Archangi-um primigenium and A. gephyra were grown on several media. Vegeta-tive and colonial morphology was described. Fructification and fruiting body germination were observed. Fruiting body formation in liquid was atypical, starting with star-like clusters culminating in solid masses. On solid media, circular and wave-like masses joined to form typical fruiting bodies. Germination was by a pulsating motion or in a "porcupine-appearing" sequence.

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