Rhus Linnaeus. Subfamily: Anacardioideae. Common name: Sumac.
A genus of about 35 species, trees, shrubs, and lianas, temperate and subtropical, of Eurasia, Hawaii, North America, and n. Central America. The subgenera and sections follow Andrés-Hernández et al. (2014). There is some merit to the idea that Rhus should be split into two or more genera, including in our area Rhus s.s. and Lobadium.
Key advice:Two hybrids have been documented to occur naturally in our area: Rhus ×borealis Greene (Rhus glabra × typhina) and Rhus ×ashei (Small) Greene (Rhus glabra × michauxii). They are intermediate between their parents. For instance, Rhus ×ashei has sparsely pubescent leaves and stems, slight winging of the rachis between the terminal leaflets, greater potential stature than R. michauxii, and leaflets with a length/width ratio of 2.5-3. Hardin & Phillips (1985b) discuss other natural and artificial hybrids in Rhus.
References: Andrés-Hernández et al. (2014); Barkley (1937); Greene (1905); Hardin & Phillips (1985a); Miller, Young, & Wen (2001); Mitchell & Pell (2019) In Naczi & collaborators (2019); Moffett (2007); Pell et al. In Kubitzki (2011); Pell, Mitchell, & Miller (2024) In Flora of North America Editorial Committee (2024); Yi, Miller, & Wen (2007). Show full citations.
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.
© Bruce A. Sorrie | Rhus typhina | Original Image ⭷
© Gary P. Fleming | Rhus typhina | Original Image ⭷
© Sonnia Hill | Rhus microphylla | Original Image ⭷
© Bruce A. Sorrie | Rhus aromatica var. serotina | Original Image ⭷
© Gary P. Fleming | Rhus copallinum var. copallinum | Original Image ⭷
© Paul Marcum | Rhus virens var. virens source | Original Image ⭷
© Sonnia Hill | Rhus copallinum var. latifolia | Original Image ⭷Feedback
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