Silphium wasiotense


Sida 13: 285, figs. 1, 2e–h, 3. 1989.

Common names: Appalachian rosinweed
Treatment appears in FNA Volume 21. Treatment on page 80. Mentioned on page 77.

Plants caulescent, 60–150 cm; fibrous rooted. Stems terete, hispid (never glaucous). Leaves: basal persistent, petiolate; cauline opposite, petiolate (proximal) or sessile (distal); blades cordate, deltate, lanceolate, or ovate, 1–28 × 1.5–20 cm, sometimes (proximal) lobed, bases auriculate, cordate, or truncate (proximal and distal), ultimate margins toothed or entire, apices acute to acuminate, faces hispid. Phyllaries 12–14 in 2–3 series, outer reflexed, apices acute to obtuse, abaxial faces hispid. Ray florets 6–14; corollas yellow. Disc florets 30–45; corollas yellow. Cypselae 4–8 × 4-6 mm; pappi 0.5–1.5 mm.

Phenology: Flowering late summer–fall.
Habitat: Dry, open sites in mesic forests, along roadcuts
Elevation: 300–600 m


Selected References


Lower Taxa

... more about "Silphium wasiotense"
Jennifer A. Clevinger +
Medley +
Appalachian rosinweed +
Ky. +  and Tenn. +
300–600 m +
Dry, open sites in mesic forests, along roadcuts +
Flowering late summer–fall. +
Undefined (tribe Undefined) subtribe Enceliinae +, Undefined (tribe Undefined) subtribe Engelmanniinae +, Undefined (tribe Undefined) subtribe Spilanthinae +, Undefined (tribe Undefined) subtribe Verbesininae +  and Undefined (tribe Undefined) subtribe Zinniinae +
Silphium wasiotense +
Silphium +
species +