Taraxacum wallichii

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Taraxacum wallichii

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Systematics

Taraxacum wallichii is characterized by sexual reproduction and therefore a wider range of variation in achene and cone lengths, colours, leaf shape etc. must be considered; T. alii falls within this range of varoation and is to be treated as conspecific (Kirschner & al. 2020: 240).A

Description

"Plants medium-sized, usually 10–15 cm, rarely to 25 cm tall. Petioles pinkish, narrow, unwinged, plant base subglabrous, tunic not developed. Leaves usually deep glaucous-green, narrowly oblanceolate in outline, usually 10–12 (–15)2.5–3.5 cm, ± pinnatipartite, with 2–4 pairs of triangular to triangular-deltoid, patent to ± recurved, subacute lateral segments, distal margin often with a few distinct, triangular teeth; interlobes broad, often denticulate; terminal segment broadly triangular, often incised. Scapes subglabrous, usually with a few hairs below capitulum. Capitula ± numerous, ca. 2.5 cm wide, yellow to paler yellow. Involucre light green to ± glaucous-green, usually 5–8 mm wide and narrowly rouded at base. Outer phyllaries ca. 6–10, not imbrivate, lanceolate to ovate, usually 4–6 (–6.5) × 2–2.5 (–3) mm, recurved, arcuate to reflexed, light green, usually suffused purplish distally, border narrow, pale to whitish, ca. 0.1–0.2 mm wide, not distinct, margin ± glabrous, surface with a visible venation, apex ± corniculate; inner phyllaries usually 14–16 mm, later to 20 mm, of unequal width (often some neighbouring phyllaries fused), with large, to 2–2.5 mm long perpendicular horns near apex. Outer ligules ± flat, stiped greyish, grey-pinkish or brownish-pinkish outside, inner ligule teeth ± yellow. Anthers polliniferous, pollen grains regular in size. Stigmas yellow to dirty yellow. Achenes light stramineous-brown, ca. 3.0–3.4 × ca. 1.0 mm, body with prominent spinulose ridges, spinules ± dense, coarse, short on ridges, otherwise, in upper half, surface covered with short, often subobtuse protuberances, body ± subabruptly narrowing into a ± cylindrical cone 0.5–0.7 mm long; beak thin, (7–) 8–9 (–10) mm long, pappus pure white, (4.5–)mm long. Sexual."

from Kirschner & al. (2020: 240)A

Distribution

Asia-Temperate: Afghanistan nativeB,C; Iran nativeD,E,F; Iraq nativeG Asia-Tropical: India (Punjab nativeH, Uttar Pradesh nativeA); Pakistan nativenativenativeE,I,J; West Himalaya (Himachal Pradesh nativenativeH,J, Jammu-Kashmir nativenativeH,I,J)

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
B. Breckle S.-W. & al., Vascular plants of Afghanistan, an augmented checklist. 2013 (as Taraxacum wallichii )
C. J. L. van Soest - 30. Taraxacum in Rechinger K. H., Flora Iranica 122. 1977 (as Taraxacum wallichii )
D. Heller D. & Heyn C. C., Conspectus florae orientalis 8. 1993
E. J. L. van Soest - 30. Taraxacum in Rechinger K. H., Flora Iranica 122. 1977
F. Safavi S. R. & al. - 77. Asteraceae tribe Cichorieae in Assadi M. & al., Flora of Iran. 2013
G. Ghazanfar S., Edmondson J. R., Hind D. J. N. & al., Flora of Iraq 6. Compositae. 2019
H. Hajra P. K., Rao R. R., Singh D. K. and Uniyal B. P., Flora of India 12. 1995
I. Ghafoor A. & al., Flora of Pakistan 222. Asteraceae (IV) Cichorieae. 2017
J. Soest J. L. van , Taraxacum species from India, Pakistan and neighbouring countries in Wentia 10: 1–91. 1963