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Thalictrum coriaceum (Britton) Small. Section: Heterogamia. Appalachian Meadowrue, Maid-of-the-Mist. Phen: May-Jul. Hab: Rich forests. Dist: A Southern and Central Appalachian endemic: s. PA, MD, VA, and WV south through w. KY and e. TN to w. NC and ne. GA

ID notes: The roots are bright yellow.

Origin/Endemic status: Endemic

Taxonomy Comments: A preliminary study concluded that T. steeleanum B. Boivin is not distinct from T. coriaceum (Park 1988); further study is needed. T. steeleanum is alleged to differ in the following ways (and others): plant with long, cordlike rhizomes (vs. stout caudex), terminal leaflets mostly wider than long (vs. mostly longer than wide), achenes curved, 4-6 mm long (vs. less curved, 2.5-4 mm long). Park found these characters (and others) to be variable and to occur together within populations. It ranges from s. PA south through MD, e. WV, w. VA to nw. NC.

Synonymy: = FNA3, K1, K3, K4, Pa, RAB, Tn, Va; > Thalictrum caulophylloides Small – S, S13, Tat; > Thalictrum coriaceum (Britton) Small – C, F, G, S, S13, W, WV; > Thalictrum steeleanum B.Boivin – C, F, G, W, WV

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Wetland Indicator Status:

  • Eastern Mountains and Piedmont: FACU

Heliophily ?: 4

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image of plant© Keith Bradley | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷

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