Helenium bolanderi

A. Gray

Proc. Amer. Acad. Arts 7: 358. 1868.

Common names: Coastal sneezeweed
Treatment appears in FNA Volume 21. Treatment on page 432. Mentioned on page 427.

Perennials, 25–140 cm. Stems usually 1, usually unbranched distally, weakly winged, glabrous proximally, sparsely to moderately hairy distally. Leaves glabrous or sparsely hairy; basal and proximal blades spatulate, entire; mid and distal blades ovate to oblanceolate to oblong-elliptic, entire. Heads 1(–3) per plant, usually borne singly. Peduncles 10–30(–50) cm, usually densely hairy (tomentose near involucres). Involucres depressed hemispheric to globoid, 14–24 × 18–34 mm. Phyllaries (connate proximally) usually tomentose. Ray florets 15–30, pistillate, fertile; corollas yellow, (12–)16–28(–37) × 6–13(–25) mm. Disc florets 300–750(–1000+); corollas yellow proximally, yellow to brown to purple distally, 4–5(–5.2) mm, lobes 5. Cypselae 1.5–2.5 mm, moderately to densely hairy; pappi of 6–8 entire, aristate scales (2.5–)3–4.5 mm. 2n = 32.

Phenology: Flowering Jun–Sep.
Habitat: Bogs, seepage areas, wet meadows
Elevation: 30–200 m


Selected References


Lower Taxa