Taraxacum retzii Soest

Pissenlit d'Oxford (fr)

Species

Angiosperms > Asterales > Asteraceae > Taraxacum

Characteristics

Leaves oblanceolate, c. 8–18 cm long, 2­4.5 cm wide, greyish green, becoming glabrous; lateral lobes in (3 ­) 4 pairs, deltoid and falcate, often with distally directed apices which are acute and often caudate; distal margins of upper 2 or 3 lobes entire or with 1 (­2) acute lobes, proximal margins entire or with 1 acute lobe close to midrib; terminal lobe sagittate, acute; petiole green suffused with purple. Scapes c. 7 cm long at anthesis, c. 25 cm long in fruit, green suffused with pink, woolly in bud, glabrous at anthesis except just below involucre. Capitula c. 3 cm diam.; outer bracts ovate-lanceolate, appressed to inner bracts basally, patent to abruptly reflexed in upper half, with white to pale pink borders 0.3–­0.5 mm wide, marginally ciliolate, usually without calli; inner bracts linear, 12­–14 mm long, c. 1­3 mm wide, corniculate at tips. Outer florets with ligule apically naviculate, exceeding involucre by 7–11 mm; anthers with pollen; stigmas greenish yellow. Achenes turbinate, 2.5­–3 mm long, c. 1 mm wide, smooth to verrucate in lower ½, with incurved flat spines c. 0.2 mm long apically, pale cinnamon to pale ochre; cone broadly cylindrical, 0.5–0.8 mm long; beak 5–­10 mm long. Pappus 6 mm long, white.
Life form perennial
Growth form herb
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Sexuality hermaphrodite
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Environment

Grows in natural grassy woodland and disturbed urban areas, mainly in alkaline loamy soils.
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Hardiness (USDA) 6-11

Usage

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Cultivation

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Distribution

Taraxacum retzii world distribution map, present in Australia, Spain, France, United Kingdom of Great Britain and Northern Ireland, and Italy

Identifiers

LSID urn:lsid:ipni.org:names:254581-1
WFO ID wfo-0000080869
COL ID 7BM9W
BDTFX ID 67055
INPN ID 125729
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Taraxacum retzii