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A revision of the genus Oxytheca Nutt. (Polygonaceae)

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Abstract

The genusOxytheca of western North America and temperate South America consists of seven species which are keyed, described, discussed, illustrated, and mapped. They are divided among sect.Oxytheca, sect.Acanthoscyphus stat. & comb. nov., and sect.Neoxytheca sect. nov.Oxytheca dendroidea subsp.chilensis is given as a new combination, whileO. parishii var.cienegensis andO. parishii var.goodmaniana are described as new. The history and relationships of the genus are discussed. It is retained as distinct fromEriogonum and is thought to have arisen from the larger genus nearE. spergulinum, E. parishii, andE. apiculatum in subgenusGanysma. Cytological data indicatedn= 20.

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Author notes

  1. Barbara Ertter

    Present address: New York Botanical Garden, 10458, Bronx, NY

Authors and Affiliations

  1. University of Maryland, College Park, 20742, MD

    Barbara Ertter

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  1. Barbara Ertter
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Ertter, B. A revision of the genus Oxytheca Nutt. (Polygonaceae). Brittonia 32, 70–102 (1980). https://doi.org/10.2307/2806224

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