Linum sulcatum Riddell
  • West. J. Med. Phys. Sci.
  • Grooved yellow flax, lin à rameaux sillonnés

Cite taxon page as 'WFO (2021): Linum sulcatum Riddell. Published on the Internet; Accessed on: 24 Jun 2021'

General Information

Herbs, annual, 25–85 cm, glabrous. Stems erect to ascending, unbranched proximally, few to many branches above middle, conspicuously sulcate. Leaves: proximal 0–13 pairs opposite (often fallen at anthesis), distal alternate, appressed-ascending; stipular glands usually present, very rarely absent; blade linear to narrowly lanceolate, 7–30 × 1–3 mm, margins entire, distal leaves not ciliate, apex acute to subulate; midrib prominent, marginal nerves less conspicuous. Inflorescences open panicles; bracts glandular-toothed, not ciliate. Pedicels 1.3–4.7 mm. Flowers: sepals persistent, lanceolate, (3.1–)3.6–5(–7.3) mm, inner sepals more delicate than outer, shorter, margins not scarious, all very conspicuously glandular-toothed, apex acuminate, central and marginal veins conspicuous; petals pale yellow, obovate, 5–10 mm; stamens 3.3–5.7 mm; anthers 0.3–0.7 mm; staminodia absent; styles connate 0.2–1.8 mm at base, 2–4.5 mm; stigmas capitate. Capsules globose, 2.5–3.3 × 2.1–3 mm, apex rounded to acute, dehiscing freely into 10, sharp-pointed, 1-seeded segments; segments persistent on plant, false septa incomplete, margins prominently ciliate. Seeds 1.6–2.1 × 0.8–1.1 mm. 2n = 30.

  • Provided by: [A].Flora of North America @
    • Source: [
    • 1
    • ]. 

    "Glabrous annual 1–3 dm, simple below, branched above into a dichasial cyme; lvs all or mostly opposite, oblong to obovate, 3–15 mm; pedicels very slender, terete, the lowest 10–25 mm, the upper shorter; sep glandular-ciliate; pet white with a yellow claw, 4–8 mm; staminodia tiny, triangular; fr ovoid-globose, 2–2.5 mm, fragile; false septa incomplete, long-ciliate; 2n=16. Native of Europe; intr. in disturbed sites from Nf. and N.S. to N.J. and Pa., w. to n. Mich. July–Sept. (L. pratense; Cathartolinum c.)"

  • Provided by: [C].New York Botanical Garden
    • Source: [
    • 2
    • ]. 

    Other Local Names

    Grooved yellow flax, lin à rameaux sillonnés


     Information From

    Flora of North America @
    'Flora of North America @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • A Flora of North America Association
    World Flora Online Data. 2017.
    • B CC0 1.0 Universal (CC0 1.0).
    New York Botanical Garden
    Descriptions of plants should be attributed to the full citation for each individual article, chapter or book that is the source for each record, which should include the authors of original publication.
    • C Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    World Flora Online consortium
    World Flora Online Data. 2018.
    • D CC0 1.0 Universal (CC0 1.0).