fungal asexual spore chlamydospore Considering obsoleting as sometimes used to refer to protozoans too. But reference indicates term was intended for fungus. An asexual 1-celled spore (primarily for perennation, not dissemination). Originates endogenously and singly within part of a pre-existing cell by the contraction of the protoplast. Possesses an inner secondary and often thickened hyaline or brown wall, usually impregnated with hydrophobic material.