Descurainia Webb & Berthelot (Q3689)

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Descurainia is a taxon with the rank genus within the tribe Descurainieae
Language Label Description Also known as
English
Descurainia Webb & Berthelot
Descurainia is a taxon with the rank genus within the tribe Descurainieae

    Statements

    taxon/id/Descurainia Webb & Berthelot
    0 references
    Descurainia Webb & Berthelot
    Descurainia
    Webb & Berthelot
    FNA Editorial Committee. 2010. Flora of North America north of Mexico. Volume 7: Magnoliophyta: Salicaceae to Brassicaceae. Oxford University Press, New York.
    accepted
    Tansy mustard (English)
    North America
    Mexico
    South America
    Eurasia
    n Africa
    Atlantic Islands (Canary Islands)
    glabrous, glabrate, or sparsely to densely pubescent, trichomes usually short-stalked, dendritic, rarely also simple, sometimes mixed with unicellular, glandular, clavate papillae.
    Stems erect or prostrate, unbranched or branched basally and/or distally.
    petiolate or sessile;
    basal (often withered by flowering), rosulate, petiolate, blade (1–3-pinnate), margins entire or toothed;
    cauline petiolate or sessile, blade often similar to basal.
    Fruiting pedicels divaricate or erect, slender.
    Flowers: sepals erect to spreading, ovate to oblong or linear;
    petals usually obovate or oblanceolate, rarely oblong, (shorter to longer than sepals), claw obsolete or distinct, (apex obtuse);
    stamens tetradynamous;
    filaments not dilated basally;
    anthers oblong to ovate, (apex obtuse);
    nectar glands confluent, subtending bases of stamens, median glands present.
    Fruits siliques or silicles, sessile, usually linear, oblong, clavate, or fusiform, rarely ellipsoid or obovoid, smooth or torulose, terete;
    valves each often with distinct midvein, usually glabrous, rarely pubescent;
    ovules 5–100 per ovary;
    style usually absent, rarely distinct;
    Seeds uniseriate or biseriate, plump, wingless, oblong or ellipsoid;
    seed-coat (minutely reticulate), usually mucilaginous when wetted;