Delineation and Distribution of Zephyranthes Species (amaryllidaceae) Endemic to the Southeastern United States

Delineation and Distribution of Zephyranthes Species (amaryllidaceae) Endemic to the Southeastern United States

Three closely related, midwinter to spring-flowering, mesic species of Zephyranthes (Amaryllidaceae) are endemic to the southeastern United States: Z. atamasca, Z. treatiae, and Z. simpsonii. The taxonomic level of the distinctiveness of Z. treatiae from Z. atamasca is discussed. Based on herbarium,...

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Bibliographic Details
Published in:Castanea Vol. 73; no. 3; pp. 216 - 227
Main Authors: Flagg, Raymond O, Smith, Gerald L
Format: Journal Article
Language:English
Published: TVA Heritage Program, PO Box 1589, Norris, Tennessee 37828 Southern Appalachian Botanical Society 01-09-2008
Subjects:
Amaryllidaceae
Anthers
Biological taxonomies
Castanea
Colleges & universities
Endemic species
Pedicels
Perianths
Principal components analysis
Scatter diagrams
Spathes
Styles
Systematics
Taxa
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Summary:Three closely related, midwinter to spring-flowering, mesic species of Zephyranthes (Amaryllidaceae) are endemic to the southeastern United States: Z. atamasca, Z. treatiae, and Z. simpsonii. The taxonomic level of the distinctiveness of Z. treatiae from Z. atamasca is discussed. Based on herbarium, cytological, and field studies, and on Principal Component Analysis and pictorialized scatter diagram analysis, we conclude that all three taxa are distinct at the species level. They are distinguished by differences in relative lengths of floral elements. Illustrations, a distribution map, and a key are provided.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0008-7475
1938-4386
DOI:10.2179/07-23.1