Conyza canadensis (Linnaeus) Cronquist (Q5394)

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Conyza canadensis is a synonym of Erigeron canadensis Linnaeus
Language Label Description Also known as
English
Conyza canadensis (Linnaeus) Cronquist
Conyza canadensis is a synonym of Erigeron canadensis Linnaeus

    Statements

    taxon/id/Conyza canadensis (Linnaeus) Cronquist
    0 references
    taxon synonym
    Vergerette du Canada (English)
    Flowering year round, mostly summer–fall.
    disturbed places
    Mexico
    Central America
    in South America
    Europe
    Africa
    Plants erect, (3–) 50–200 (–350+) cm, branched mostly distally.
    Leaves: faces usually glabrate (proximal margins ± ciliolate, hairs usually stiff, spreading and hispid on nerves, hairs erect);
    proximal blades oblanceolate to linear, 20–50 (–100+) × 4–10 (–15+) mm, toothed to entire;
    distal similar, smaller, entire.
    Heads usually in paniculiform, sometimes corymbiform arrays.
    Involucres 3–4 mm.
    Receptacles 1–1.5 (–3) mm diam. in fruit.
    Pistillate florets 20–30 (–45+);
    corollas ± equaling or surpassing styles, laminae 0.3–1 mm.
    Disc-florets 8–30+.
    Cypselae uniformly pale tan to light gray-brown, 1–1.5 mm, faces sparsely strigillose;
    pappi of 15–25, white bristles 2–3 mm. 2n = 18.