Swida rugosa (Lamarck) Rydberg

Locations ofSwida rugosa (Lamarck) Rydberg in Virginia

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Botanical Name
Swida rugosa (Lamarck) Rydberg
Common Name
Roundleaf Dogwood
Cornus rugosa Lam.
Flora of Virginia Name/Status
Cornus rugosa Lam.
Flora of the Southeastern U.S. (Weakley et al. 2023) splits traditional Cornus into several genera (Chamaepericlymenum, Benthamidia, and Swida in our area) representing major clades in phylogenetic analysis. Even though Cornus treated broadly is monophyletic, the clades are also monophyletic and diverged millions of years ago, accorrding to Yu et al. (2017, PLOS One DOI:10.1371/journal.pone.0171361) and Fu et al. (2019, Molec. Phylogen. & Evol. 140: 106601). As evolutionary lineages, these clades are far older than many groups treated by taxonomists as genera and clearly merit generic status.
Rocky forests and boulder fields; not particular about rock type. Rare in the mountains; many historical populations have disappeared in recent years, possibly because of the Dogwood Anthracnose Fungus (Discula destructiva Redlin).
Native Status

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