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A REAPPRAISAL OF THE POLLEN ULTRASTRUCTURE OF PARTHENICE MOLLIS GRAY (COMPOSITAE)
Author(s) -
Bolick M. R.,
Skvarla J. J.
Publication year - 1976
Publication title -
taxon
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 81
eISSN - 1996-8175
pISSN - 0040-0262
DOI - 10.2307/1219451
Subject(s) - pollen , herbarium , ultrastructure , botany , biology , gray (unit) , medicine , radiology
Summary Transmission electron microscopy of the pollen of Parthenice mollis Gray reveals a helianthoid structural pattern. This pattern is characteristic of the subtribe Melampodinae, in which this species has been traditionally placed. Earlier reports of P. mollis pollen indicated an ultrastructural pattern which was characteristic of the Ambrosiinae (i.e., not typically helianthoid): herbarium material upon which this earlier work was based was incorrectly determined, the specimen concerned being Iva ambrosaefolia Gray.