Packera millefolium

(Torrey & A. Gray) W. A. Weber & Á. Löve

Phytologia 49: 47. 1981.

Common names: Piedmont ragwort
IllustratedEndemicConservation concern
Basionym: Senecio millefolium Torrey & A. Gray Fl. N. Amer. 2: 444. 1843
Synonyms: Senecio memmingeri Britton ex Small
Treatment appears in FNA Volume 20. Treatment on page 591. Mentioned on page 575, 586, 592.

Perennials, 25–60+ cm; fibrous-rooted (caudices branched). Stems 1 or 2–3, clustered, glabrous or leaf axils sparsely hairy. Basal leaves (and proximal cauline) petiolate; blades narrowly ovate to ovate (2–3 times pinnately dissected, ultimate lobes mostly linear to filiform), 50–80 × 30–50 mm, bases ± truncate or auriculate, ultimate margins entire or remotely dentate. Cauline leaves gradually reduced (petiolate or sessile, similar to basals). Heads 10–30+ in open, corymbiform arrays. Peduncles bracteate or ebracteate, glabrous. Calyculi 0. Phyllaries (13–)21, green, 4–6 mm, glabrous (tips sometimes hair-tufted). Ray florets 8–10(–13); corolla laminae 8–12 mm. Disc florets 35–50+; corolla tubes 2–3 mm, limbs 1.5–2.5 mm. Cypselae 0.75–1.5 mm, hairy on ribs; pappi 3–4 mm.


Phenology: Flowering early May–mid Jun.
Habitat: Open areas along streams, rock outcrops in thin, granitic-derived soils
Elevation: 400–900 m

Discussion

Of conservation concern.

Packera millefolia is known only from granitic soils in the southern Appalachians. It is similar in overall aspect to the widespread P. anonyma; it differs by its 2–3 times pinnately dissected leaves.

Selected References

None.

Lower Taxa

None.
... more about "Packera millefolium"
Debra K. Trock +
(Torrey & A. Gray) W. A. Weber & Á. Löve +
Senecio millefolium +
Piedmont ragwort +
Ga. +, N.C. +, S.C. +  and Va. +
400–900 m +
Open areas along streams, rock outcrops in thin, granitic-derived soils +
Flowering early May–mid Jun. +
Illustrated +, Endemic +  and Conservation concern +
Senecio memmingeri +
Packera millefolium +
species +