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FNA | Family List | FNA Vol. 12 | Linaceae

2. Linum bienne Miller, Gard. Dict. ed. 8. Linum no. 8. 1768.
[I W]

Pale flax Pale flax

Linum angustifolium Hudson

Herbs, biennial or short-lived perennial (flowering 1st year), 6–60 cm, glabrous. Stems erect, usually branched from near base and in inflorescence. Leaves: blade linear to linear-lanceolate, 5–25 × 1–1.5 mm. Inflorescences open panicles. Pedicels 10–25 mm. Flowers homostylous; sepals ovate, 4–5.5 mm, margins of inner sepals minutely ciliate, outer glabrous, apex acute to acuminate; petals blue, obovate, 6–10 mm; stamens 4–5 mm; anthers 1–2.5 mm; staminodia present or absent; styles distinct, 2 mm; stigmas linear or clavate. Capsules broadly ovate to subglobose, 4–6 × 4–6 mm, apex very sharp-pointed, segments ± persistent on plant, margins ciliate. Seeds 2.5–3 × 1.5–2 mm. 2n = 30.

Flowering Mar–Aug. Grasslands, woodlands, disturbed places; 0–1900 m; introduced; B.C.; Calif., Oreg., Pa.; Europe, n Africa; introduced also in South America (Argentina, Chile), Pacific Islands (New Zealand).

Linum bienne is thought to be the progenitor of L. usitatissimum (D. J. Ockendon 1971).


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