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1 September 2012 Yucca filamentosa and Yucca flaccida (Agavaceae) Are Distinct Taxa in Their Type Localities
Daniel B. Ward
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Abstract

There has been question whether the taxon known as Yucca filamentosa (Agavaceae) is to be distinguished from the taxon known as Yucca flaccida. Much of the uncertainty lay in the absence of sure knowledge of the forms intended by their original authors. A neotype of Y. flaccida from Florida was selected in 2006. Here, the type locality in Virginia of Y. filamentosa is revisited and an epitype is selected. The two taxa, as represented by plants from these two type localities, differ markedly in a number of characteristics. It is suggested that Y. filamentosa and Y. flaccida be retained at specific rank.

Daniel B. Ward " Yucca filamentosa and Yucca flaccida (Agavaceae) Are Distinct Taxa in Their Type Localities," Castanea 77(3), 273-279, (1 September 2012). https://doi.org/10.2179/10-017
Received: 24 March 2010; Accepted: 1 November 2010; Published: 1 September 2012
JOURNAL ARTICLE
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KEYWORDS
Agavaceae
epitype selection
Virginia botany
Yucca filamentosa
Yucca flaccida
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