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Steironema tonsum (Alph. Wood) E.P. Bicknell ex Britton. Southern Loosestrife, Appalachian Loosestrife. Phen: May-Jul; Aug-Oct. Hab: Moist to dry upland forests, especially over calcareous or mafic rocks. Dist: Sc. VA, sw. VA, and KY south to SC, wc. GA, and e. TN. The range is centered on the Southern Appalachians, but the species is essentially absent from the higher mountains – a "doughnut range".

Origin/Endemic status: Endemic

Synonymy: = S; = Lysimachia tonsa (Alph.Wood) Alph.Wood ex R.Knuth – C, F, FNA8, K1, K3, K4, RAB, Tn, Va, W, WV, Coffey & Jones (1980), Estes, Shaw, & Mausert-Mooney (2015); =? Steironema intermedium Kearney – G

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Heliophily: 4

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image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Alan Cressler: Lysimachia tonsa, Lookout Mountain, Dade County, Georgia 3 by Alan Cressler source | Original Image ⭷


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