TAXONOMY OF HYMENOXYS SUBGENUS MACDOUGALIA (ASTERACEAE: HELENIEAE: TETRANEURINAE)

A taxonomic treatment is presented for Hymenoxys subg. Macdougalia, which includes a single species, Hymenoxys bigelovii. The treatment includes a discussion of the original circumscription of Hymenoxys bigelovii (as Actinella bigelovii), the later description of the genus Macdougalia to accommodate...

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Bibliographic Details
Published in:SIDA, contributions to botany contributions to botany, 2004-12, Vol.21 (2), p.657-663
Main Author: Bierner, Mark W.
Format: Article
Language:English
Subjects:
Biological taxonomies
Copper mining
Florets
Leaves
Lectotypes
Plant glands
Plants
Ploidies
Rydberg series
SYSTEMATICS
Taxa
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Summary:A taxonomic treatment is presented for Hymenoxys subg. Macdougalia, which includes a single species, Hymenoxys bigelovii. The treatment includes a discussion of the original circumscription of Hymenoxys bigelovii (as Actinella bigelovii), the later description of the genus Macdougalia to accommodate this taxon, and the eventual placement, based on chemical, cytological, and morphological evidence, of Macdougalia within Hymenoxys as a monotypic subgenus. The treatment also includes synonymies of Hymenoxys subg. Macdougalia and Hymenoxys bigelovii, lectotypification of Actinella bigelovii, and a description and range map for Hymenoxys bigelovii. Se presenta un tratamiento taxonómico de Hymenoxys subg. Macdougalia, que incluye una sola especie, Hymenoxys bigelovii. El tratamiento incluye una discusión de la circunscripción original de H. bigelovii (como Actinella bigelovii), la descripción del género Macdougalia para acomodar este taxon, y la colocación eventual, basada en pruebas químicas, citológicas, y morfológicas, de Macdougalia en Hymenoxys como un subgénero monotípico. El tratamiento incluye también sinonimias de Hymenoxys subg. Macdougalia y Hymenoxys bigelovii, lectotipificación de Actinella bigelovii, y una descripción y mapa de distribución de Hymenoxys bigelovii.
ISSN:0036-1488
2334-3273