Silphium albiflorum

A. Gray

Proc. Amer. Acad. Arts 19: 4. 1883.

Common names: White rosinweed
Treatment appears in FNA Volume 21. Treatment on page 78. Mentioned on page 77.

Plants scapiform, 20–75 cm; taprooted. Stems terete, glabrous, hirsute, hispid, or scabrous. Leaves: basal persistent, petiolate; cauline usually alternate, rarely subopposite, petiolate or sessile; blades deltate, elliptic, linear, ovate, or rhombic, 2–40 × 1.5–26 cm, sometimes (proximal) 1–2-pinnately lobed, bases attenuate, cuneate, or truncate, ultimate margins unevenly toothed or entire (distal blades), apices acuminate to apiculate, faces scabrous to hirsute. Phyllaries 23–36 in 2–3 series, outer reflexed, apices acuminate, abaxial faces hispid. Ray florets 14–30; corollas white. Disc florets 70–130; corollas white. Cypselae 12–26 × 7–12 mm; pappi 2–5 mm.

Phenology: Flowering late spring–summer.
Habitat: Prairies, open fields, calcareous soils
Elevation: 100–500 m


Selected References


Lower Taxa

... more about "Silphium albiflorum"
Jennifer A. Clevinger +
A. Gray +
White rosinweed +
100–500 m +
Prairies, open fields, calcareous soils +
Flowering late spring–summer. +
Proc. Amer. Acad. Arts +
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 albiflorum +
Silphium +
species +