Leucanthemum vulgare, commonly known as the ox-eye daisy, oxeye daisy, dog daisy, marguerite (French: Marguerite commune, "common marguerite") and other common names, is a widespread flowering plant native to Europe and the temperate regions of Asia, and an introduced plant to North America, Australia and New Zealand.
List of synonyms
Leucanthemum vulgare is a perennial herb that grows to a height of 60 cm (24 in) or more and has a creeping underground rhizome. The lower parts of the stem are hairy, sometimes densely hairy but more or less glabrous in the upper parts. The largest leaves are at the base of the plant and are 4–15 cm (1.6–5.9 in) long, about 5 cm (2.0 in) wide and have a petiole. These leaves have up to 15 teeth, or lobes or both on the edges. The leaves decrease in size up the stem, the upper leaves up to 7.5 cm (3.0 in) long, lack a petiole and are deeply toothed.
The plant bears up to three "flowers" like those of a typical daisy. Each is a "head" or capitulum 2–6 cm (0.79–2.36 in) wide. Each head has between fifteen and forty white "petals" (ray florets) 10–20 mm (0.39–0.79 in) long surrounding the yellow disc florets. Below the head is an involucre of glabrous green bracts 7–10 mm (0.28–0.39 in) long with brownish edges. Flowering mostly occurs from late spring to early summer. The seed-like achenes are 1–3 mm (0.039–0.118 in) long and have ten "ribs" along their edges but lack a pappus.
Ox-eye daisy is similar to shasta daisy (Leucanthemum × superbum) which has larger flower-heads (5–12 cm (2.0–4.7 in) wide) and to stinking chamomile (Anthemis cotula which has smaller heads (1.5–3 cm (0.59–1.18 in) wide).
Taxonomy and namingEdit
Leucanthemum vulgare was first formally described in 1778 by Jean-Baptiste Lamarck who published the description in Flore françoise. It is also known by the common names ox-eye daisy, dog daisy, field daisy, Marguerite, moon daisy, moon-penny, poor-land penny, poverty daisy and white daisy.
Distribution and habitatEdit
Ox-eye daisy is native to Europe, and to Turkey and Georgia in Western Asia. It is a typical grassland perennial wildflower, growing in a variety of plant communities including meadows and fields, under scrub and open-canopy forests, and in disturbed areas. The species is widely naturalised in many parts of the world and is considered to be an invasive species in more than forty countries. It grows in temperate regions where average annual rainfall exceeds 750 mm (30 in), and often where soils are heavy and damp. It is often a weed of degraded pastures and roadsides.
Ox-eye daisy spreads by seeds and by shallow, creeping rhizomes. A mature plant can produce up to 26,000 seeds that are spread by animals, vehicles, water and contaminated agricultural produce, and some seeds remain viable for up to nearly forty years. It is not palatable to cattle and reduces the amount of quality pasture available for grazing. In native landscapes such as the Kosciuszko National Park in Australia, dense infestation can exclude native plants, causing soil erosion and loss of soil organic matter.
Status as an invasive speciesEdit
Leucanthemum vulgare is one of the most widespread weeds in the Anthemideae. It became an introduced species via gardens into natural areas in parts of Canada, the United States, Australia, and New Zealand. In some habitats it forms dense colonies displacing native plants and modifying existing communities.
Ox-eye daisy commonly invades lawns, and is difficult to control or eradicate, since a new plant can regenerate from rhizome fragments and is a problem in pastures where beef and dairy cattle graze, as usually they will not eat it, thus enabling it to spread; cows who do eat it produce milk with an undesirable flavor. It has been shown to carry several crop diseases.
This species has been declared an environmental weed in New South Wales and Victoria. In New South Wales it grows from Glen Innes on the Northern Tablelands to Bombala in the far southeast of the state, and there are significant populations in the Kosciuszko National Park where it has invaded subalpine grassland, snowgum (Eucalyptus pauciflora) woodland and wetlands. In Victoria it is a prohibited species and must be eradicated or controlled.
Use in horticultureEdit
Leucanthemum vulgare is widely cultivated and available as a perennial flowering ornamental plant for gardens and designed meadow landscapes. It thrives in a wide range of conditions but prefers a sunny or part-sun location of average soil that is damp (like many in the Daisy family). Ox-eye daisy does well in raised and mulched garden beds that retain moisture and prevent weeds. It is a mesophyte and therefore requires more or less a continuous water supply. The heads of faded and old blooms are often deadheaded to promote further blooming and to maintain the appearance of the plant. There are cultivars, such as 'May Queen', that begin blooming in early spring.
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