Washington Flora Checklist
A Checklist of the Vascular Plants of Washington State
Hosted by the University of Washington Herbarium
 

Checklist » Chenopodiaceae
Chenopodiaceae   (Goosefoot Family)

Notes: PZ treatment based on FNA draft treatment seen 3-2001
Recent molecular work suggests Chenopodiaceae may eventually be included within the Amaranthaceae.

FNA4: "Here the genus Dysphania is accepted in an expanded circumscription (S. L. Mosyakin and S. E. Clemants 2002), including all other "glandular" taxa previously treated in Chenopodium subg. Ambrosia A. J. Scott, or segregated in genera such as Roubieva Moquin-Tandon, Teloxys Moquin-Tandon, and Neobotrydium Moldenke. In its traditional circumscription Dysphania has no distinctive characters clearly separating it from those other "glandular" chenopods.

Presence of glandular trichomes seems to be a character of high phylogenetic and taxonomic importance in Chenopodiaceae, in which types of trichomes were used for delimitation of genera, tribes, and even subfamilies. This character seldom fails, even if there are some parallel evolutionary trends present. R. C. Carolin (1983) suggested that Chenopodieae with glandular hairs probably separated from Chenopodieae with bladder hairs even at a more basal (earlier) phylogenetic level than the point of divergence of the latter from Atriplicinae. Chenopodium species with bladder hairs ("mealy chenopods") are probably more closely related to Atriplex and its satellite genera than to "glandular chenopods." P. G. Wilson (1984, 1987) came to the same conclusion.

W. A. Weber (1985) adopted the name Teloxys Moquin-Tandon for the group of "glandular" taxa and transferred several species of "glandular" Chenopodium to Teloxys. The latter was published simultaneously with Roubieva, and thus, if only these two generic names are considered, Weber’s choice should stand. However, the generic name Dysphania predates both Teloxys and Roubieva, and "...[I]f Teloxys, Orthosporum, and Dysphania are amalgamated then the oldest name Dysphania should be adopted" (P. G. Wilson 1987)."

Family Synonyms: (none)

Literature: (none)

Family treatment authored by Peter F. Zika; last updated 9/4/2012 by David Giblin
 
Taxon (native species in boldface) # Synonyms Common Names


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