Linum bienne |
Linum sect. Linum |
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flax, narrow-leaf flax, pale flax |
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Habit | Herbs, biennial or short-lived perennial (flowering 1st year), 6–60 cm, glabrous. | Herbs, annual, biennial, or perennial. | ||||||||||||||||||||
Stems | erect, usually branched from near base and in inflorescence. |
usually terete (ridged in L. grandiflorum). |
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Leaves | blade linear to linear-lanceolate, 5–25 × 1–1.5 mm. |
alternate; stipular glands absent; blade margins entire, not glandular-toothed. |
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Inflorescences | open panicles. |
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Pedicels | 10–25 mm. |
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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. |
homostylous or heterostylous; sepals persistent, margins scarious, entire, not glandular-toothed; petals usually blue or red to maroon, rarely white; staminodia present or absent; styles distinct, connate basally or to midlength; stigmas capitate, clavate, or linear. |
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Capsules | broadly ovate to subglobose, 4–6 × 4–6 mm, apex very sharp-pointed, segments ± persistent on plant, margins ciliate. |
dehiscing into 10, 1-seeded segments; false septa incomplete. |
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Seeds | 2.5–3 × 1.5–2 mm. |
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Pollen | tricolpate. |
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2n | = 30. |
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Linum bienne |
Linum sect. Linum |
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Phenology | Flowering Mar–Aug. | |||||||||||||||||||||
Habitat | Grasslands, woodlands, disturbed places. | |||||||||||||||||||||
Elevation | 0–1900 m. (0–6200 ft.) | |||||||||||||||||||||
Distribution |
CA; OR; PA; BC; Europe; n Africa [Introduced in North America; introduced also in South America (Argentina, Chile), Pacific Islands (New Zealand)]
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North America; Mexico; Eurasia; n Africa; Pacific Islands (New Zealand); Australia [Introduced in s South America] |
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Discussion | Linum bienne is thought to be the progenitor of L. usitatissimum (D. J. Ockendon 1971). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Species ca. 50 (6 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 12, p. 374. | FNA vol. 12, p. 373. | ||||||||||||||||||||
Parent taxa | Linaceae > Linum > sect. Linum | Linaceae > Linum | ||||||||||||||||||||
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Synonyms | L. angustifolium | |||||||||||||||||||||
Name authority | Miller: Gard. Dict. ed. 8, Linum no. 8. (1768) | unknown | ||||||||||||||||||||
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