Vascular Plants of North Carolina
Account for Glade Wild Quinine - Parthenium auriculatum   Britton
Members of Asteraceae:
Members of Parthenium with account distribution info or public map:
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Section 6 » Order Asterales » Family Asteraceae
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DistributionPiedmont and foothills, but not known from the Mountains. The specimens from Burke County are from south and southeast of Morganton, near or on diabase dikes. The Alexander County record is from an oak-hickory forest just west of Vashti. The Rutherford County report has no voucher specimen. A Macon County specimen at DUKE is P. integrifolium.

The Piedmont and adjacent lower Mountains, from northern VA and WV south to eastern AL.
AbundanceUncommon and somewhat local in the northern and northeastern Piedmont, but rare over the remainder of the Piedmont. Though this is a Significantly Rare species, there are enough records that it perhaps should be moved to the Watch List.
HabitatDry to xeric margins of oak-hickory woodlands, openings in such woodlands, glades, barrens, and powerlines -- always in circumneutral soil. Occurs mostly over diabase rock.
PhenologyFlowering and fruiting mid May-August.
IdentificationPlants grow 1.5-3 feet tall from a thickened rootstock. Basal leaves are much the largest, ovate, long-stalked, but stem leaves are sessile and their bases usually clasp the stem (i.e, auriculate). Stems are hairy with coarse hairs 1-3 mm long and leaves are very rough-textured (scabrous surfaces). Common Wild Quinine (P. integrifolium) can grow with it but has stem leaves with short stalks, or may be sessile, but do not clasp the stem; stem hairs are less than 1 mm long; and leaf surfaces are less harsh to the touch. Despite these two species often growing nearly side-by-side in some areas, there seems to be no indication of hybridization.
Taxonomic CommentsIn some treatments this is a variety of Common Wild Quinine; RAB (1968) named it as P. integrifolium var. auriculatum. Most current references do treat it as a good species.

Other Common Name(s)None
State RankS3
Global RankG3G4
State StatusSR-T
US Status
County Map - click on a county to view source of record.
Photo Gallery
B.A. SorrieLarge patch of plants, mafic soil of powerline E of Everett Chappell Road, Sept 2022. RichmondPhoto_natural
B.A. SorrieStanly County, 2010, Union Chapel Enon Knolls, mafic soil of roadside bank.
Terry SharpeRare in mafic soil under powerline E of Everett Chappell Road. Late May 2021. RichmondPhoto_natural
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