Symphyotrichum rhiannon Weakley & Govus. Buck Creek Aster, Rhiannon's Aster. Phen: Oct-Nov. Hab: Ultramafic outcrop barren. Dist: Endemic (as far as is known) to the Buck Creek Serpentine Barren, Clay County, NC.

Origin/Endemic status: Endemic

Taxonomy Comments: Showing some similarities to S. puniceum and S. prenanthoides, but unique in many characters. This endemic species was first noticed by Mansberg & Wentworth (1984) and later studied and described in Kauffman et al. (2004), which see for additional and detailed information.

Synonymy: = FNA20, K3, K4, Kauffman et al (2004); = n/a – RAB

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