Taraxacum sect. Dissecta

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Taraxacum sect. Dissecta

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Description

Early vernal small plants, base with a tunic. Petiole unwinged; leaf blade arachnoid, deeply lobed, lateral lobes patent or recurved. Scapes arachnoid. Involucre with rounded base, usually 7–10 mm wide. Phyllaries with apex flat and not corniculate or rarely slightly callose; outer phyllaries 10–16, imbricate or not so, appressed to patent, with a distinct paler border, margin ciliate. Florets yellow; stigma discolored. Outer and inner phyllaries flat, without corniculation at apex, rarely slightly callose. Achene grayish straw-colored brown, brown, or red, densely spinulose above, 3–4.4 × 0.7–0.9 mm; body subabruptly or ± abruptly narrowing into a cylindric to conic-subcylindric 0.5–0.9 mm cone; beak 6–9 mm. Pappus white.

from: Ge X., Kirschner J. & Štepánek J. in Wu Z. Y. & al. (ed.), Flora of China 20–21: 323. 2011, Beijing & St Louis.


Early vernal, delicate plants. Plant base usually with a “tunica” of brownish dry petioles. Leaves araneous or sparsely araneous deeply lobate, lobation pattern oftencomplicated, lobes patent or pointing downwards. Midrib without striatulate pattern, leaf blade unspotted. Petioles unwinged to narrowly winged. Scapes sparsely araneous or araneous, particularly below the capitulum. Involucre with rounded base, usually of medium width (ca. 7–10 mm wide). Flowers yellow, ligules flat. Pollen present (variable in size) or absent, stigma discoloured (usually pale greenish). Exterior and interior involucral bracts flat, without corniculation at the apex, rarely slightly callose. Exterior bracts 12–16, of ± equal length or slightly imbricate, adpressed, loosely adpressed to erect, or patent, lanceolate to ovate, usually 6–10 mm long, with broad paler margins, ciliate. Achenes usually pale greyish straw brown or red, densely spinulose above, 3.0–4.4 mm long, subabruptly or ± abruptly narrowing in the cone. Cone conical-subcylindrical or subcylindrical, 0.5–0.9 mm long. Rostrum thin, 6.0–9.0mm long. Pappus 5.0– 6.0mm long, white. Plants studied were found to be agamospermous.

from: Kirschner & Štěpánek in Folia Gebot. 39: 266–267. 2004.

Distribution

Asia-Temperate: Altay (Altaynative); Amur (Amurnative); Buryatiya (Buryatiyanative); Chita (Chitanative); Irkutsk (Irkutsknative); Khabarovsk (Khabarovsknative); Kirgizistan (Kirgizistannative); Mongolianative; Primorye (Primoryereported in error); Xinjiang (Xinjiangnative) Asia-Tropical: West Himalaya (Jammu-Kashmirreported in error)

Common names

Chinese (China): 多裂蒲公英组 duo lie pu gong ying zuA

Bibliography

A. Wu & al., Flora of China 20-21. 2011