Taraxacum pertenue

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Taraxacum pertenue

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Description

"Plants slender, usually to 10 cm tall. Petioles light green, glabrous, usually narrowly winged; plant base with sparse hairs, without tunic. Leaves mid-green, with mid-vein pale green, glabrous, very narrow, linear in outline, usually 3.5–7 × 0.3–0.8 cm, pinnatisect, with (4) 5–6 (7) pairs of short, patent, entire, often subobtuse linear-lingulate lateral segments; interlobes distinct, to ca. 2 mm wide, entire or very rarely with a single lobule; terminal segment entire, linear-lingulate, usually ca. 2 mm wide, with basal lobules short, patent, linear; rarely lateral segments of the outermost leaves similar to those of T. tricolor (i.e., with broad, distally convex basal part). Scape glabrous or initially with sparse hairs, bronze, usually ± overtopping leaves. Capitulum yellow, usually 2–3 cm wide. Involucre blackish, not pruinose, to 8 mm wide and rounded at base. Outer phyllaries 6–9 (11), subimbricate, with contrasting colours of almost black middle part and ± white borders, appressed, usually ovate-lanceolate, some broadly ovate or narrowly lanceolate, (3.5–) 4–5.5 (–7) × 1.5–3.0 mm, with a distinct, sharply delimited, ± white border (0.2–) 0.4–0.5 (–0.8) mm wide, margin glabrous or sometimes with sparse minute hairs, sometimes denticulate, apex often reddish, dark corniculate; inner phyllaries 9–11 mm long, often neighbouring ones coalescing, dark blackish green, usually corniculate or callose. Outer ligules ± flat, striped grey-purple beneath, inner ones sometimes also striped pale purplish, with apical teeth purplish. Stigmas greenish yellow, distally with greyish pubescence outside. Anthers polliniferous; pollen grains irregular in size. Achenes blackish grey (initially greyish stramineous and getting dark grey at the final stage of ripening), usually (4.1–) 4.3–4.5 (–4.8) × (0.8–) 0.9–1.0 mm, body with short, subdense, erect incised squamules in upper 1/4–1/3, ± gradually narrowing into ± subcylindrical cone 0.8–1.1 × 0.3–0.35 mm; beak slightly thickened, usually (1.5–) 2.5–3(–3.7) mm long; pappus ± white, 4.5–5 mm long. Agamosperm."

from Kirschner & al. (2020: 103)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