Taraxacum oblongatum

Description
Herbs 10–25 cm tall. Petiole pinkish purple, winged; leaf blade deep green with a light green midvein sometimes pinkish near base, ± oblong-oblanceolate, 7–18 × 3–4 cm, sparsely arachnoid to subglabrous, ± pinnatisect; lateral lobes 3–5 pairs, ± triangular, relatively broad, usually hamate-recurved, distal margin convex and usually entire or seldom denticulate; interlobes short but proximal ones longer, margin entire or denticulate, often with a raised dark border; terminal lobe ± helmetshaped or almost rounded, base often cordate, proximal margin ± straight or sigmoid, distal margin convex and ± entire, apex subobtuse to obtuse and mucronate. Scape light green but later brownish purple, ± arachnoid. Capitulum 3.5–5 cm wide. Involucre base ± rounded. Outer phyllaries 14–18, regularly arranged, linear-lanceolate to lanceolate, (10–)11–13(–14) × 2.3–3.5 mm, arcuate-recurved, abaxially dark green and often suffused purplish brown, adaxially grayish green, ± unbordered. Ligules deep yellow; outer ligules flat, outside striped light grayish brownish purple. Stigmas dark grayish green to almost blackish. Anthers polliniferous; pollen grains variable in size. Achene grayish straw-colored brown, (3.4–)3.8–4.3 mm, ± densely spinulose in upper ca. 1/4, ± abruptly narrowing into a ± conic 0.5–0.6 mm cone; beak 1–1.1 cm. Pappus ± white, ca. 6 mm. Fl. spring. Agamosperm. 2n = 24.
from: Ge X., Kirschner J. & Štepánek J. in Wu Z. Y. & al. (ed.), Flora of China 20–21: 324–325. 2011, Beijing & St Louis.
from: Ge X., Kirschner J. & Štepánek J. in Wu Z. Y. & al. (ed.), Flora of China 20–21: 324–325. 2011, Beijing & St Louis.
Distribution
Asia-Temperate: China South-Central (Yunnan introducedA); Turkey introducedI Europe: Austria (Austria nativeJ,K); Belgium nativeL,M; Denmark nativeN,O; Finland nativeP,Q,R; France (Channel Is. nativeG,Q, France native ‒ nativeM,S,T,U); Germany nativeV,W,X; Great Britain nativeQ,R,Y,Z; Ireland (Ireland nativeG,Q); Netherlands nativeAA,M,Q,R; Poland nativeAB,AC,AD; Spain (Spain native ‒ nativeAE,U); Sweden nativeAF,Q,R
Bibliography
C. Soest, J. L. van, New Taraxacum species from Europe [I, II, III, IV] in Proc. Kon. Ned. Akad. Wetensch., Ser. C, Biol. Med. Sci. 69: 432-489. 1966 (as Taraxacum pseudoleptodon)
D. Marklund, G., Die Taraxacum-Flora Nylands in Acta Bot. Fenn. 26: 1-187. 1940 (as Taraxacum falciferum)
F. Lindberg, H., Die Früchte der Taraxacum-Arten Finnlands in Acta Bot. Fenn. 17: 1-22, Taf. 1-38. 1935
I. Gürdal B. & al., Contributions to the genus Taraxacum (Asteraceae) — five new species records for the flora of Turkey in Pl. Biosystems. 2017
L. Lundevall, C.-F. & Øllgaard, H., The genus Taraxacum in the Nordic and Baltic countries: types of all specific, subspecific and varietal taxa, including type locations and sectional belonging in Preslia 71: 43-171. 1999 (as Taraxacum pseudoleptodon)
M. Soest, J. L. van, New Taraxacum species from Europe [I, II, III, IV] in Proc. Kon. Ned. Akad. Wetensch., Ser. C, Biol. Med. Sci. 69: 432-489. 1966 (as Taraxacum pseudoleptodon)
O. Lundevall, C.-F. & Øllgaard, H., The genus Taraxacum in the Nordic and Baltic countries: types of all specific, subspecific and varietal taxa, including type locations and sectional belonging in Preslia 71: 43-171. 1999 (as Taraxacum falciferum)
P. Marklund, G., Die Taraxacum-Flora Nylands in Acta Bot. Fenn. 26: 1-187. 1940 (as Taraxacum falciferum)
S. Anonymous [Association Tela Botanica], Tela Botanica. Flore électronique. Flores en ligne, France métropolitaine (as Taraxacum pseudoleptodon)
T. Lundevall, C.-F. & Øllgaard, H., The genus Taraxacum in the Nordic and Baltic countries: types of all specific, subspecific and varietal taxa, including type locations and sectional belonging in Preslia 71: 43-171. 1999 (as Taraxacum cardiastrum)
U. Sahlin, C. I., New Pyrenean species of Taraxacum (Compositae) in Pirineos 121: 5-27. 1984 (as Taraxacum cardiastrum)
W. Rothmaler, W., Exkursionsflora von Deutschland, 4. Gefäßpflanzen: Kritischer Band, ed. 8. 1994 (as Taraxacum falciferum)
Y. Lundevall, C.-F. & Øllgaard, H., The genus Taraxacum in the Nordic and Baltic countries: types of all specific, subspecific and varietal taxa, including type locations and sectional belonging in Preslia 71: 43-171. 1999
Z. Lundevall, C.-F. & Øllgaard, H., The genus Taraxacum in the Nordic and Baltic countries: types of all specific, subspecific and varietal taxa, including type locations and sectional belonging in Preslia 71: 43-171. 1999 (as Taraxacum perhamatum)
AA. Soest, J. L. van, Atlas of leaf shapes of Taraxacum species from the Netherlands [I, II, III]. 1970–1973
AB. Głowacki, Z., Øllgaard, H. & Krechowski, J., Genus Taraxacum in the herbarium of University of Silesia in Badan. Fijzogr. Pol. Zachod., B 53: 107-112. 2004
AC. Mirek, Z., Piękoś-Mirkova, H., Zając, A. & Zając, M., Flowering plants and pteridophytes of Poland. A Checklist. in Biodivers. Poland 1. 2002
AD. Mirek, Z., Vascular plants of Poland. A Checklist. in Polish Bot. Stud., Guideb. Ser. 15. 1995 (as Taraxacum falciferum)