Jepson eFlora
Key to families | Table of families and genera

Key to Helianthella

View taxon page for Helianthella

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

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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