Taraxacum sect. Orientalia

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Taraxacum sect. Orientalia

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Description

"Flowers and leaves develop simultaneously. Plants usually small, plant base subglabrous. Leaves usually glabrous, not swollen at hair base, usually undivided or shallowly lobed, midrib without striatulate pattern, blade unspotted, petioles usually narrowly winged or ± unwinged. Scapes erect during flowering, unbranched, growing from the centre of leaf rosette, glabrous or subglabrous. Involucre with sub-obconical or rounded base, usually of medium width (c. 7–10 mm wide). Inner phyllaries flat, without corniculation at the apex, rarely callose. Outer phyllaries 10–14, of ± equal length, appressed to erect, lanceolate to ovate, with narrow to broad, distinct, white or paler border, rarely border ± absent, glabrous or sparsely minutely ciliate. Flowers yellow, florets usually ± numerous, ligules flat. Pollen usually present, stigma discoloured (usually greenish to almost black in dry condition). Receptacle glabrous. Achenes 3.9–4.8 mm long, slender to medium thick, usually 0.8–1 mm wide, gradually and often indistinctly narrowing into the cone, achene body usually pale greyish straw brown, sparsely spinulose, spinules minute, cone subconical, with a broader base, thicker, usually 0.4–0.6 mm long. Rostrum thin, sometimes thickened, 1–8 mm long, not breaking off, pappus 4–6 mm long, white, not deciduous. Main flowering season: summer (in high mountains). Main habitat: subalpine and alpine meadows. Sexual or apomictic."A

Distribution

Asia-Temperate: Afghanistannative; Irannative; Iraqnative; North Caucasusnative (Chechnyanative, Dagestannative, Kabardino-Balkariyanative, Karacheyevo-Cherkessiyanative, Krasnodarnative, Severo-Osetiyanative, Stavropolnative); Transcaucasus (Abkhaziyanative, Adzhariyanative, Armenianative, Azerbaijannative, Georgianative, Nakhichevannative); Turkeynative Asia-Tropical: West Himalaya (Jammu-Kashmirnative)

Bibliography

A. Kirschner J. & al., Taraxacum sect. Orientalia (Compositae-Crepidinae) and the West Himalayan dandelions: A new interpretation in Phytotaxa 312: 1-27. 2017