Descurainia nelsonii (Rydberg) Al-Shehbaz & Goodson (Q3691)

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Descurainia nelsonii is a taxon with the rank species within the genus Descurainia
Language Label Description Also known as
English
Descurainia nelsonii (Rydberg) Al-Shehbaz & Goodson
Descurainia nelsonii is a taxon with the rank species within the genus Descurainia

    Statements

    taxon/id/Descurainia nelsonii (Rydberg) Al-Shehbaz & Goodson
    0 references
    Descurainia nelsonii (Rydberg) Al-Shehbaz & Goodson
    Descurainia nelsonii
    (Rydberg) Al-Shehbaz & Goodson
    FNA Editorial Committee. 2010. Flora of North America north of Mexico. Volume 7: Magnoliophyta: Salicaceae to Brassicaceae. Oxford University Press, New York.
    accepted
    (Rydberg) Al-Shehbaz & Goodson
    moutarde-tanaisie de Nelson (French)
    Nelson's tansy mustard (English)
    sagebrush tansy mustard (English)
    Nelson's western tansy mustard (English)
    1 reference
    FNA Editorial Committee. 2010. Flora of North America north of Mexico. Volume 7: Magnoliophyta: Salicaceae to Brassicaceae. Oxford University Press, New York. http://www.efloras.org/volume_page.aspx?volume_id=1007&flora_id=1
    1 reference
    Cody, W.J. 2000. Flora of the Yukon Territory. 2nd ed. National Research Press, Ottawa. 669 pp.
    Flowering late May-mid Jul.
    roadsides
    sagebrush
    bottoms
    silty flats
    gravelly grounds
    sparsely to moderately pubescent, sometimes glabrous distally, not canescent, trichomes dendritic.
    Stems erect, usually branched basally or slightly distally, rarely unbranched, (0.7–) 0.9–3.2 (–4.5) dm.
    Basal leaves: petiole 0.5–1.5 cm;
    blade pinnate, ovate or oblong in outline, 0.8–2.5 cm, lateral lobe (2–5 pairs), margins dentate or entire.
    Cauline leaves sessile or shortly petiolate;
    blade smaller distally, distal lobes often narrower, sparsely to moderately pubescent.
    Fruiting pedicels divaricate-ascending (often at 20–45º angle), straight, (1.5–) 2.5–7 (–10) mm.
    Flowers: sepals ascending, yellowish, oblong, 0.7–1.2 mm, pubescent;
    petals narrowly oblanceolate, 0.8–1.2 × 0.2–0.4 mm;
    median filaments 1–1.5 mm;
    anthers 0.1–0.2 mm.
    Fruits erect or ascending, linear, not or slightly torulose, (0.4–) 5–8 (–10) × 0.7–1 mm;
    valves each with distinct midvein;
    ovules 6–12 per ovary;
    style 0.1–0.2 mm, glabrous.
    Seeds uniseriate, brown, oblong, 0.6–0.8 × 0.4–0.5 mm. 2n = 14.