Jepson eFlora
Key to families | Table of families and genera

Key to Helenium

View taxon page for Helenium

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Stem not winged; cauline leaves generally narrowly linear; annual ..... H. amarum var. amarum

1' Stem winged by decurrent leaf bases; cauline leaves generally wider; annual or perennial herb

2. Cauline leaf margin ± toothed ..... H. autumnale

2' Cauline leaf margin entire

3. Heads (1)4–20(30); ray corolla 3.8–10 mm (occasionally ray flowers 0); disk corolla generally 4-lobed, 1.6–2.7 mm; pappus scales 0.4–1 mm ..... H. puberulum

3' Heads 1–20; ray corolla 12–37 mm; disk corolla 5-lobed, 3–5.2 mm; pappus scales 1.3–4.5 mm

4. Peduncle sparsely to moderately hairy; pappus scales 1.3–2.2(2.7) mm; widespread but not North Coast ..... H. bigelovii

4' Peduncle generally densely hairy; pappus (2.5)3–4.5 mm; North Coast ..... H. bolanderi


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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