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FOC | Family List | FOC Vol. 20-21 | Asteraceae | Taraxacum

79. Taraxacum tonsum Kirschner & Štepánek, Fl. China. 20-21: 307. 2011.

短毛蒲公英 duan mao pu gong ying

Type: China. Xinjiang: "Urbs Kashi [喀什市]: in locis caespitosis ad Kashgar Hotel," May 1999, P. Sekerka, Zhang Dao Yuan & V. Huml s.n., cultivated as JŠ 7379 (holotype, PRA; isotypes, MO, PE, PRA).

Plantae agamospermae mediocres, foliis glaucescenti-viridibus, oblanceolatis, fere glabris, pinnatisectis, lobis lateralibus 3 vel 4(vel 5) utrinque, petiolis alatis, phyllariis involucralibus exterioribus 17 ad 20, pallide olivaceo-viridibus, conspicue albomarginatis, marginibus 0.2-0.4 mm latis, saepissime late ovatis vel ovatis, laxe adpressis, apice planis vel subcorniculatis, stigmatibus saturate luteis, antheris polliniferis, acheniis plerumque 4-4.2 mm longis, superne subdense spinulosis, in pyramidem subcylindricam 0.5-0.6 mm longam subabrupte abeuntibus.

Herbs 15-20 cm tall. Petiole pinkish purple, narrowly to broadly winged; leaf blade grayish green with a faintly pinkish midvein, oblanceolate, 9-19 × 1.7-2.8 cm, ± glabrous, regularly shallowly to deeply pinnatisect; lateral lobes 3 or 4(or 5) pairs, triangular to broadly so, 5-10 × ca. 10 mm, ± patent to subrecurved, distal margin straight to subconcave and sparsely minutely dentate or ± entire, apex acute; interlobes unspotted, 5-8 × ca. 5 mm, margin sparsely dentate or entire; terminal lobe triangular to narrowly triangular, 1-4 × 0.8-2.3 cm, rarely 3-partite, margin entire or sparsely dentate, apex subacute. Scapes light green but purplish at base, subequaling leaves, usually sparsely arachnoid. Capitulum 2-2.5 cm wide. Involucre 8-10 mm wide, base flat, rounded. Outer phyllaries 17-20, light olivaceous green but suffused purplish apically, imbricate, usually ovate to broadly ovate but some ovate-lanceolate, outermost ones (5.5-)7-8 × (3-)3.5-5 mm and 1/2-3/5 as long as inner ones, loosely appressed to erect-patent, with a distinct whitish 0.2-0.4 mm wide border, margin very sparsely ciliate, apex ± flat but subcorniculate in later capitula; inner phyllaries 1.4-1.5 cm. Ligules yellow; outer ligules ± flat, outside striped purplish black; inner ligules with yellow or faintly pink teeth at apex; ligule tube pubescent. Stigmas pure deep yellow. Anthers polliniferous; pollen grains irregular in size. Achene grayish light brown, 4-4.2 × 0.9-1.1 mm; body with prominent lateral ridges, subdensely spinulose, subabruptly narrowing into a subcylindric 0.5-0.6 mm cone; beak 8-8.5 mm. Pappus dirty white, ca. 6 mm. Fl. late spring. Agamosperm.

● Grasslands, ruderal lawns, pastures; 1200-1400 m. SW Xinjiang (Kashi).


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