Presence

presence (noun, pl. presences) – a record of occurrence, i. e., whether a particular structure can be observed. The attribute presence is a binary character since only two character states (absent vs. present) are possible.

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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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