Taraxacum leoninum

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Taraxacum leoninum

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Description

"Plants medium-sized, 8–17 cm tall. Petiole faintly purplish, 2–4 cm long, broadly winged; plant base without tunic, densely greyish-brownish arachnoid. Leaves variously erect-patent, slightly fleshy, light glaucous-green, not spotted, ± glabrous, with mid-vein proximally (adaxially) brownish purple or purple, narrowly oblong to narrowly spatulate in outline, 7–14 × 1.2–2.5 cm, pinnatifid to pinnatipartite (inner leaves sometimes undivided), the lobation pattern approaches that of T. gelertii, with 2–3 pairs of short and broad, subrecurved to patent, broadly triangular to deltoid-triangular, acute lateral segments, distal margin ± concave or ± sigmoid or ± straight, entire, proximal margin subconcave to straight, rarely subconvex, entire; interlobes medium long, relatively broad, usually 4–10 × 5–10 mm, not purplish coloured nor bordered, entire or less often with a single little tooth, sometimes with a raised margin below the next segment; terminal segment relatively smaller, triangular, helmet-shaped to narrowly so, often asymmetrically angled to pentagonal, usually 1–2.5 × 0.9–1.8 cm, distal margin convex, subsigmoid or straight, often with a single asymmetrical shallow broad incision and a broad tooth, otherwise entire, basal lobules sometimes subhastate, acute, proximal margin subconcave to ± straight. Scapes purplish at base, otherwise pale green, arachnoid, later glabrescent (but densely arachnoid below capitulum), ± equalling leaves. Capitulum yellow, ca. 3.5 cm wide, ± flat. Involucre slightly pruinose, inner phyllaries darker than outer, ca. 9–10 mm wide and rounded at base. Outer phyllaries 15–20, proximally loosely appressed, distal half arcuate-recurved to arcuate patent, ± not imbricate, ovate to lanceolate, 6.5–8 × (2.5–) 3–4 mm, with a dark olivaceous-green middle strip and a gradual transition into paler olivaceous-green maginal belt, bordered whitish membranous 0.1–0.3 mm, margin irregularly ciliate, sometimes also remotely denticulate, apex subcallose; inner phyllaries ca. 12 mm long, ± flat. Outer ligules ± flat, relatively narrow, striped deep purplish grey-olivaceous outside, apical teeth dark grey-purplish, inner ligules almost flat, gradually getting shorter towards the capitulum centre (“neatly” arranged), their apical teeth dirty brownish to pinkish. Stigmas yellow, with pale pubescence outside, anthers polliniferous, pollen grains irregular in size. Achenes light coloured, light beige-brownish, yellowish brown or pale cinnamon brown, (4.5–) 4.8–5.1 × 1.1–1.2 mm, body relatively densely covered with ± short spinules in upper 1/3, otherwise sparsely tuberculate to almost smooth, very gradually narrowing into basally subconical (0.3–0.4 mm thick), otherwise cylindrical cone 0.8–1.2 × 0.25–0.3 mm, often with one or a few spinules at base; beak thin, 7–8 mm long, pappus almost pure white to very slightly brownish white, ca. 6 mm long. Agamosperm."

from Kirschner & al. (2020: 291)A

Distribution

Asia-Tropical: Pakistan nativeA

Bibliography

A. Kirschner J., Štěpánek J., Klimeš L. & al., The Taraxacum flora of Ladakh, with notes on the adjacent regions of the West Himalaya in Phytotaxa 457: 1-409. 2020