Rudbeckia mollis


Sketch Bot. S. Carolina 2: 453. 1823.

Common names: Softhair coneflower
Treatment appears in FNA Volume 21. Treatment on page 58. Mentioned on page 53.

Annuals, biennials, or perennials, to 100 cm (taprooted). Stems softly pilose to woolly (hairs spreading, 1–4 mm, longer ones toward bases). Leaves: blades oblong to oblong-lanceolate (not lobed), margins entire or serrate, apices acute to obtuse, faces softly pilose to woolly, gland-dotted; basal petiolate, 5–12 × 0.5–2 cm, bases attenuate; cauline sessile, (elliptic to pandurate) 1.5–10 × 1–4 cm (mid largest, bases cuneate to auriculate). Heads borne singly or (2–12) in loose, corymbiform arrays. Phyllaries to 1.5 cm (faces hairy and gland-dotted). Receptacles conic to hemispheric; paleae 5–6.5 mm, apices acute, abaxial tips hirsute and gland-dotted. Ray florets 10–16; laminae linear to oblanceolate, 20–40 × 4–7 mm, abaxially hairy and gland-dotted. Discs 10–20 × 12–18 mm. Disc florets 200–400+; corolla bases yellowish green, otherwise brown-purple, 3–4.2 mm; style branches ca. 1.5 mm, apices acute to obtuse. Cypselae 2.5–3.5 mm; pappi 0 or coroniform, to 0.1 mm. 2n = 38.

Phenology: Flowering late spring–summer.
Habitat: Dry, sandy soils
Elevation: 30–90 m


Selected References


Lower Taxa