Rhus Linnaeus. 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.
Subfamily: Anacardioideae.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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