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effigurate (adjective) – having a definite form, etymologically derived from "ex" and "figurate", which literally means having a distinct figure, shape or form; typically used to describe obscurely or irregularly lobed, crustose thalli. The term is not consistently applied by various authors and often used quite differently. Therefore this term might best be avoided entirely. Obscurely lobed thalli, i. e., thalli that lack distinct lobes, are better referred to as sublobate. In contrast, distinctly lobed thalli are lobate. Lobate thalli may have an irregular outline or they are placodioid, i. e., having distinctly elongated and radiating lobes; the thallus is then almost circular in outline.

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