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

Key to Linum

View taxon page for Linum

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

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

1. Petals yellow to orange, stem glabrous or puberulent.

2. Petals 10–15mm, with dark red band at base, freefruit 5-segmented, stem  ..... L. puberulum

2' Petals 3.5–6 mm, without dark red band at base, fused at base; fruit 10-segmented, stem glabrous ..... L. trigynum

1' Petals bright red to maroon, or blue to white; stem glabrous

3. Petals bright red to maroon; all sepal margins conspicuously  ..... L. grandiflorum

3' Petals blue to white; margins of inner sepals  or minutely toothed to ciliate

4. Stigmas head-like; margins of inner sepals entire, not ciliate;  herb ..... L. lewisii var. lewisii

4' Stigmas elongate,  to club-shaped; margins of inner sepals minutely ciliate or toothed (entire); annual, weak perennial herb, or biennial

5. Petals 6–10 mm; fruit generally 4–6 mm wide ..... L. bienne

5' Petals 10–15 mm; fruit 5–10 mm wide ..... L. usitatissimum



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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