| Author | (Muhlenberg ex Willdenow) W.A. Weber & A. Love | |
| Distribution | Mountains and upper Piedmont; disjunct to Caswell County in the northern Piedmont.
VT and Que. to KS, south to northwestern FL and TX. Scarce in the Coastal Plain, and in the Piedmont south of VA. | |
| Abundance | Uncommon to locally infrequent in the Mountains and western Piedmont monadnocks; very rare east to Caswell County. | |
| Habitat | Mesic (rarely dry) to moist rocky woodlands, ledges, cliffs, and nutrient-rich deciduous forests. Prefers middle and higher pH soils, usually found on or near rocks. | |
| Phenology | Flowering and fruiting late March-June. | |
| Identification | Roundleaf Ragwort has basal leaves that are broadly elliptical to obovate (with outer portion broadest), not strongly toothed nor dissected. Plants are rather short, rarely 2 feet tall. Of our ragworts, only P. aurea and P. serpenticola have such broad and uncut basal leaves, but theirs are round in outline and with heart-shaped bases. P. paupercula has much narrower basal leaves (narrowly elliptical). | |
| Taxonomic Comments | Formerly named as Senecio obovatus.
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| Other Common Name(s) | Spoon-leaved Ragwort, Roundleaf Groundsel, Squaw-weed | |
| State Rank | S3 | |
| Global Rank | G5 | |
| State Status | | |
| US Status | | |
| USACE-agcp | FACU link |
| USACE-emp | FACU link |
