Jepson eFlora: Key page
Vascular Plants of California
Key to families | Table of families and genera

Key to Helenium

View taxon page for Helenium

(For a list of species in Helenium, use the above link.)

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

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

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

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

2' Cauline leaf margin 

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 NCo ..... H. bigelovii

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


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Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, [accessed on ]

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

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