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Euphorbia Linnaeus. Spurge.

Contributed by Alan S. Weakley and Scott G. Ward

Key to Euphorbia

A genus of over 2000 species, herbs, shrubs, and trees, nearly cosmopolitan in distribution. Infrageneric classification follows Yang et al. (2012), Dorsey et al. (2013), Riina et al. (2013), and Horn et al. (2012). It is debatable whether the very broad circumscription of Euphorbia used here (and following nearly all recent experts) is really the most serviceable.

Ref: Berry et al. (2016) In Flora of North America Editorial Committee (2016); Bradley & Sadle (2021) In Weakley et al. (2021); Bridges & Orzell (2002); Burch (1966); Cacho, Monteverde-Suárez, & McIntyre (2019); Dorsey et al. (2013); Dressler (1957); Govaerts, Frodin, & Radcliffe-Smith (2000); Horn et al. (2012); Huft (1979); Mayfield (2013); Park (1998); Riina et al. (2013); Smith & Krings (2018); Ward (2001); Ward (2023) In Weakley et al. (2023); Webster (2014) In Kubitzki (2014); Yang et al. (2012); Zimmermann, Ritz, & Hellwig (2010). Show full citations.

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Hover over a shape, letter, icon, or arrow on the map for definition or see the legend. Data for arrows not developed for genera and families which may have species only occurring outside the flora area.

image of plant© Gary P. Fleming | Euphorbia dentata | Original Image ⭷
image of plant© Gary P. Fleming | Euphorbia exserta | Original Image ⭷
image of plant© Keith Bradley | Euphorbia hirta | Original Image ⭷
image of plant© Gary P. Fleming | Euphorbia purpurea | Original Image ⭷
image of plant© Alan M. Cressler | Euphorbia corollata | Original Image ⭷
image of plant© Kym Nicolson, some rights reserved (CC BY), uploaded by Kym Nicolson | Euphorbia paralias source | Original Image ⭷


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