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Leucanthemum
Family: Asteraceae
Leucanthemum image
Max Licher
  • FNA
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John L. Strother in Flora of North America (vol. 19, 20 and 21)
Perennials, (10-)40-130(-200+) cm (rhizomatous, roots usually red-tipped). Stems usually 1, erect, simple or branched, glabrous or hairy (hairs basifixed). Leaves mostly basal or basal and cauline; petiolate or sessile; blades obovate to lanceolate or linear, often 1[-2+]-pinnately lobed or toothed, ultimate margins dentate or entire, faces glabrous or sparsely hairy. Heads usually radiate, rarely discoid, borne singly or in 2s or 3s. Involucres hemispheric or broader, 12-35+ mm diam. Phyllaries persistent, 35-60+ in 3-4+ series, distinct, ovate or lance-ovate to oblanceolate, unequal, margins and apices (colorless or pale to dark brown) scarious (tips not notably dilated; abaxial faces glabrous or sparsely hairy). Receptacles convex, epaleate. Ray florets usually 13-34+, rarely 0, pistillate, fertile; corollas white (drying pinkish), laminae ovate to linear. Disc florets 120-200+, bisexual, fertile; corollas yellow, tubes ± cylindric (proximally swollen, becoming spongy in fruit), throats campanulate, lobes 5, deltate (without resin sacs). Cypselae ± columnar to obovoid, ribs ± 10, faces glabrous (pericarps with myxogenic cells on ribs and resin sacs between ribs; embryo sac development monosporic); pappi 0 (wall tissue of ray cypselae sometimes produced as coronas or auricles on some cypselae). x = 9. The three leucanthemums recognized here are weakly distinct and are sometimes included (with a dozen or more others) in a single, polymorphic Leucanthemum vulgare.

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Leucanthemum atratum
Image of Leucanthemum atratum
Leucanthemum cantabricum
Images
not available
Leucanthemum heterophyllum
Image of Leucanthemum heterophyllum
Leucanthemum integrifolium
Image of Leucanthemum integrifolium
Leucanthemum lacustre
Image of Leucanthemum lacustre
Leucanthemum maximum
Image of Leucanthemum maximum
Leucanthemum nipponicum
Image of Leucanthemum nipponicum
Leucanthemum paludosum
Image of Leucanthemum paludosum
Leucanthemum rotundifolium
Image of Leucanthemum rotundifolium
Leucanthemum superbum
Image of Leucanthemum superbum
Leucanthemum vulgare
Image of Leucanthemum vulgare
Leucanthemum waldsteeinii
Images
not available
Leucanthemum x superbum
Image of Leucanthemum x superbum
The National Science Foundation
Development supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)
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