Taraxacum nigrofructum

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Taraxacum nigrofructum

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Description

"Plants small, usually 7–10 cm tall. Petiole light green, glabrous, narrow, unwinged; plant base almost glabrous, with sparse white hairs, without tunic. Leaves mid-green, with pale green mid-vein, ± linear in outline, usually 5–7.5 × 0.4–0.8 (–1.1) cm, glabrous, usually pinnatisect, with 2–3 (4) pairs of ± recurved to subpatent, usually linear-triangular, sometimes ± deltoid-triangular, entire lateral segments to ca 5 mm long, ± acute; interlobes distinct, entire, usually 1.5–2.5 mm wide; terminal segment, entire, subacute, linear-triangular to linear-lingulate, usually to 1.5 cm long, with basal lobules ± tooth-like, short, ± recurved. Scapes brownish green, often suffused bronze, initially very sparsely arachnoid, later glabrous, ± overtopping leaves. Capitulum yellow, usually 1.5–2.5 cm wide. Involucre not pruinose, usually 6–7 mm wide and rounded at base. Outer phyllaries (7) 9–10 (12), the innermost ones often conspicuously long, ± imbricate, with an almost black to blackish green middle part and whitish membranous borders, appressed, most of them ovate to ovate-lanceolate, some lanceolate, most often (4.5–) 6–7 × 2–2.8 mm, less often to 8–9 × 1.7–2.0 mm, with a sharply delimited, whitish-membranous border (0.3–) 0.5–1.2 mm wide, margin glabrous, apex often reddish, ± flat to corniculate; inner phyllaries often broad (neighbouring ones often coalescing), usually 9–11 mm long, blackish green, usually ± flat. Outer ligules ± flat to canaliculate, striped grey-purple beneath, inner ligule teeth purplish or dirty yellow. Stigmas greenish yellow or greyish yellow. Anthers polliniferous; pollen grains irregular in size. Achenes black when ripe, unripe grey-stramineous, usually (3.2–) 3.5–3.6 (–3.8) × (0.9–) 1.0–1.1 mm, body densely covered with erect spinules and incised squamules in upper 1/3, subabruptly narrowing into a short ± thick cylindrical to subconical cone (0.4–) 0.5–0.6 (–0.7) × 0.3–0.35 mm, beak ± thickened, ca. 2–2.5 (–3) × 0.2–0.25 mm; pappus (yellowish) white, 5–5.5 mm long. Agamosperm."

from Kirschner & al. (2020: 110)A

Distribution

Asia-Tropical: West Himalaya (Jammu-Kashmir 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