Silphium integrifolium Michaux (Q2797)

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Silphium integrifolium is a taxon with the rank species within the genus Silphium
Language Label Description Also known as
English
Silphium integrifolium Michaux
Silphium integrifolium is a taxon with the rank species within the genus Silphium

    Statements

    taxon/id/Silphium integrifolium Michaux
    0 references
    Silphium integrifolium Michaux
    Silphium integrifolium
    Michaux
    FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 21: Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. Oxford University Press, New York.
    accepted
    Silphium integrifolium
    silphe à feuilles entières (French)
    whole-leaved rosinweed (English)
    Wholeleaf rosinweed (English)
    Stems terete to slightly square, sparsely scabrous or glabrous (sometimes glaucous).
    Leaves: basal caducous;
    cauline opposite, sessile;
    blades lanceolate to ovate, 2–23 × 0.1–11 cm, bases round to caudate, margins finely serrate or entire, apices acute to acuminate, faces hispid, scabrous, or glabrous.
    Phyllaries 17–37 in 2–3 series, outer appressed, apices acute to acuminate, abaxial faces glabrous, hispid, pilose, or scabrous, sometimes stipitate-glandular.
    Ray-florets 12–36;
    Disc-florets 70–225;
    Cypselae 9–14 × 6–10 mm;