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

73. Taraxacum imbricatius Kirschner & Štepánek, Fl. China. 20-21: 305. 2011.

叠鳞蒲公英 die lin pu gong ying

Type: China. Xinjiang: "Montes Altaj [阿尔泰山], situ boreal. a Qinghe [青河]," 1557 m, 23 Sep 2004, P. Sekerka, P. Hanzelka & I. Bulánková 04/06, cultivated as JŠ 7963 (holotype, PRA; isotypes, MO, PE, PRA).

Plantae agamospermae, foliis laete viridibus, anguste ellipticis vel ellipticis, pinnatisectis, lobis lateralibus 4 ad 6 utrinque, subrecurvis usque hamato-recurvis, petiolis late usque anguste alatis, phyllariis involucralibus exterioribus 18 ad 21, saturate olivaceo-viridibus, imbricatis, ovatis usque late ovatis, laxe adpressis, stigmatibus luteo-viridibus, antheris polliniferis, acheniis 3.7-3.9 mm longis, superne dense spinulosis, in pyramidem conicam 0.5-0.6 mm longam abrupte abeuntibus.

Herbs 14-18 cm tall. Petiole light purplish green, broadly winged in outer leaves, narrowly so in middle ones, arachnoid at base; leaf blade light green, ± narrowly elliptic to elliptic, 8-16 × 2.5-4.5 cm, arachnoid, pinnatisect, midvein adaxially brownish purple in proximal part; lateral lobes 4-6 pairs, ± triangular to narrowly deltoid-triangular, to 2 × 1.5 cm, subrecurved to hamate-recurved, distal margin convex and entire or with 1 or 2 teeth, proximal margin straight to concave and entire or with 1 large tooth, apex acute; interlobes short, margin raised and dentate; terminal lobe triangular to broadly triangular, 1-2.5 × 1.5-3 cm, margin usually entire, apex subacute. Scapes green but pinkish at base, ± equaling leaves, usually densely arachnoid. Capitulum ca. 3.5 cm wide. Involucre ca. 1 cm wide, base ± truncate. Outer phyllaries 18-21, deep abaxially olivaceous green suffused brownish pink near apex, ± imbricate, ± ovate to broadly ovate (inner of them to ± lanceolate), outermost ones 6-8 × 3-4.3 mm and 1/2-2/3 as long as inner ones, loosely appressed, with an indistinct dirty membranous 0.1-0.2 mm wide border, margin subglabrous to sparsely ciliate, apex ± flat; inner phyllaries 1.2-1.3 cm. Ligules deep yellow; outer ligules ± flat, outside striped purplish grayish brown; inner ligules with yellow teeth at apex; ligule tube pubescent. Stigmas greenish yellow, abaxially dark pubescent. Anthers polliniferous; pollen grains irregular in size. Achene light grayish olivaceous brown, 3.7-3.9 × 1-1.2 mm, with distinct lateral and ventral ridges; body densely spinulose in upper ca. 1/3, ± abruptly narrowing into a conic 0.5-0.6 × ca. 0.3 mm cone, spinules thin and often slightly recurved; beak ca. 1.1 cm. Pappus dirty white, 6-7 mm. Fl. late spring. Agamosperm.

● Submontane steppe meadows and pastures; ca. 1500 m. N Xinjiang.


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