Pityopsis nervosa (Willdenow) Dress. Phen: Jun-Oct. Hab: Longleaf pine sandhills, dry woodlands and forests (such as ridgetop pine/heath communities in the Mountains), roadbanks. Dist: S. NJ, DE (formerly), s. OH, and c. AR south to s. FL and nc. TX; Bahamas; also in Mexico (CHP, OAX, PUE, TAM, VER) and Central America (Belize, Guatemala, Honduras).

Origin/Endemic status: Native

Taxonomy Comments: This is the oldest species name for the most common large-headed member of the P. graminifolia complex, including a wide range of variation and possible introgression with other taxa of Pityopsis. Most populations are tetraploid (2n=36), but occasional diploids have also been referred here.

Synonymy: = Heterotheca nervosa (Willd.) Shinners; = Pityopsis graminifolia (Michx.) Nutt. – Nesom (2019a); = Pityopsis nervosa (Willd.) Dress var. nervosa – Ward (2004c); < Chrysopsis graminifolia (Michx.) Elliott – G; < Chrysopsis graminifolia (Michx.) Elliott var. graminifolia – SE1, misapplied; < Chrysopsis graminifolia (Michx.) Elliott var. latifolia Fernald – C, W; > Chrysopsis nervosa (Willd.) Fernald var. nervosa – F, Tat; > Chrysopsis nervosa (Willd.) Fernald var. stenolepis Fernald – F, Tat; > Chrysopsis nervosa (Willd.) Fernald var. virgata Fernald – F; > Heterotheca correllii (Fernald) H.E.Ahles – RAB; < Heterotheca graminifolia (Michx.) Shinners – Bah, Tx, Bowers (1972); > Heterotheca nervosa (Willd.) Shinners var. nervosa – RAB; > Heterotheca oligantha (Chapm.) Harms – Tx, misidentifications; < Pityopsis graminifolia (Michx.) Nutt. – Fl7, K4, Mex, Oh3, S, WH3, misapplied; < Pityopsis graminifolia (Michx.) Nutt. var. latifolia Fernald – Ar, FNA20, K1, K3, NcTx, Tn, Va, Semple & Bowers (1985)

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: UPL (taxonomic split from wetland indicator species)
• Eastern Mountains and Piedmont: UPL (taxonomic split from wetland indicator species)
• Great Plains: FACU (taxonomic split from wetland indicator species)
• Midwest: UPL (taxonomic split from wetland indicator species)

Heliophily: 7