Jepson eFlora
Key to families | Table of families and genera

Key to Helianthella

View taxon page for Helianthella

1. Outer phyllaries generally enlarged, leaf-like, incurved; involucre 2.5–4 cm diam; fruit center thick, edge thin ..... H. castanea

1' Outer phyllaries seldom enlarged or leaf-like, not incurved; involucre generally (1)1.5–2 cm diam; fruit compressed, thin ..... H. californica

2. Pappus 0; stem branched; cauline leaves generally opposite ..... var. californica

2' Pappus present; stem generally unbranched; cauline leaves generally alternate

3. Disk generally 1.5–2 cm diam; pappus generally of 2 awns or narrow scales, 1–2 mm, and crown of short scales; leaf blades oblong- or lance-linear, (1.5)2–4(4.5) cm wide, heads generally 2–3 ..... var. nevadensis

3' Disk generally 1–1.5 cm diam; pappus generally of 2 awns, 1 mm; leaf blades linear to lance-linear (narrowly ovate), 3–6(18) mm wide; heads generally 1 ..... var. shastensis


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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