Placodioid

placodioid (adjective; variant spelling: placoid) – referring to a crustose thallus that is areolate in the thallus centre but lobate or even plicate along the periphery and more or less orbicular in outline; sometimes rather loosely applied to include even small, peltate or umbilicate lichens like Rhizoplaca or Squamarina.

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Other Resources: Flora Australia Fungi, Lichens  •  Glossary at Mushroom  •  Cornell Pl. Path.  •  APS Pl. Path.: A-D E-H I-M N-R S-V W-Z.
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