Guttulate

guttulate (adj.) – containing one or several oil droplets (guttules) inside a cell; usually referring to the cell lumina of a non-septate spore. Guttulate spores often look septate, especially if the oil droplets are approximately equal in size and located within a row along the long axis of the cell. Using a clearing agent like 5-10 % KOH dissolves the droplets and thus reveals, if indeed septa are present; cf. biguttulate.

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