Category: P
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Pseudanthium (plural pseudanthia)
(In Euphorbiaceae or Cornus) an inflorescence consisting of several reduced flowers, the whole resembling a single flower. An inflorescence that consists of several reduced flowers together functioning as a single flower.
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Psammophyte
Plant growing in sand or sandy soils.
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Pruinose
Covered with a waxy, frost-like powder or bloom, as on a plum. (Of stem) Appearing powdered by fine dots, as if sprinkled with flour or sugar.
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Provisional
(In nomenclature) name or epithet not accepted by its author at the time of its publication. Temporary and which may be change. Serving a temporary use pending permanent arrangements.
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Protype
(In nomenclature) meaning a specimen that because of its completeness supplants a fragmentary holotype [unofficial and unusual term]; the official epitype is better, meaning a specimen that because of its completeness supports a fragmentary holotype.
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Protuberant
Bulging out. A part that is prominent beyond a surface.
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Protruding
Sticking out, exserted.
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Protracted
Drawn out.
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Protostele
Stele without central pith.
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Protologue
(In nomenclature) the original description of a taxon; more correctly everything associated with a name at its valid publication, i.e. description or diagnosis, illustrations, references, synonymy, geographical data, citation of specimens, discussion, and comments.