Taraxacum pseudoatratum Orazova (1966: 491)

Kirschner, Jan & Štěpánek, Jan, 2017, A revision of Taraxacum sect. Atrata, a dandelion group centred in the Middle Asia, and the problem of Taraxacum brevirostre, Phytotaxa 305 (4), pp. 225-261 : 241-242

publication ID

https://doi.org/ 10.11646/phytotaxa.305.4.1

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https://treatment.plazi.org/id/976B87DC-FFC0-B158-FF15-F88B345FC98A

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Felipe

scientific name

Taraxacum pseudoatratum Orazova (1966: 491)
status

 

8. Taraxacum pseudoatratum Orazova (1966: 491) View in CoL Taraxacum atratum Schischkin (1964: 743) , nom. illeg., non G. E. Haglund (1948). Type: — KAZAKHSTAN. Dzhungarskiy Alatau, bass. Koksu, levoberezh’e srednego techeniya r. Kazan, lednikovye istoki pritokov [the

Dzhungar Alatau, Koksu River basin, left banks of middle stream of Kazan River, glacier sources of tributaries], 30 Aug 1948, V.

Goloskokov ( LE, no. det. 6517, holotype; isotypi: LE!)

Note: —There are numerous (seven) isotypes, sometimes deviating from the holotype in details of label wording. This is the case of LE, no. det. 7973, mistakenly annotated as the type of T. pseudoatratum by Orazova.

Description: —Plants 5–10 cm tall. Petiole ± green, narrowly winged; leaf blade mid-green, ± oblanceolate, 5–8 × 1.2–2 cm, glabrous, undivided to shallowly sinuate-lobed, margin entire; lateral lobes 1 or 2 pairs, broadly triangular, to 5 mm, ± patent, margin entire; interlobes not distinctly developed, margin entire; terminal lobe broadly triangular, margin entire. Scapes brownish green, equalling leaves, glabrous. Capitulum ca. 2 cm wide. Involucre 8–10 mm wide, base narrowly rounded. Outer phyllaries 7–9, blackish green to deep greyish green, not imbricate, lanceolate to narrowly lanceolate, often broadest in middle or tapering from base, outermost ones 5–7 × 1.5–2.3 mm and ca. 1/2 as long as inner ones, ± appressed, border paler, narrow, and not always distinct or to 0.3 mm wide, margin glabrous or rarely sparsely minutely ciliate, apex ± flat; inner phyllaries 1.1–1.4 cm, apex flat. Ligules yellow; outer ligules outside striped greyish pink. Stigmas yellow to dirty yellow. Anthers polliniferous; pollen grains irregular in size. Achene greyish stramineous-colored brown, ca. 4 × 0.9–1 mm; body with sparse minute spinules or tubercles in a narrow zone in upper part, gradually narrowing into a conic 0.4–0.5 mm cone; beak ca. 5 mm, not thin. Pappus ± white, ca. 6 mm.—Agamospermous.— Fig. 11J View FIGURE 11 , 15B View FIGURE 15 .

Distribution: — Taraxacum pseudoatratum is known to grow in alpine or subalpine grasslands; probably above 3000 m. It was described from the Dzhungar Alatau, Kazakhstan ( Fig. 5 View FIGURE 5 ), and most probably also occurs in the W. Xinjiang ( Zhai 1999).

LE

Servico de Microbiologia e Imunologia

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