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

38. Cirsium semenowii Regel, Bull. Soc. Imp. Naturalistes Moscou. 40(3-4): 161. 1867.

新疆蓟 xin jiang ji

Chamaepeuce macrantha Schrank var. bracteata Ruprecht; Cnicus semenowii (Regel) C. Winkler.

Herbs 50-60(-80) cm tall, perennial. Stems erect, branched above, unwinged, with sparse long multicellular hairs and cobwebby. Leaves concolorous, green, surface smooth, glabrous. Lower and middle cauline leaves with long, winged petiole; wing margin with spinules and spine-tipped teeth; leaf blade lanceolate, linear-lanceolate, or elliptic, to 15 × 3.5 cm, pinnatifid; segments 4-6 pairs, elliptic to ovate, with unequal triangular teeth, teeth with a 0.3-2 cm apical spine. Upper cauline leaves similar but sessile, gradually smaller upward, semiamplexicaul. Capitula few to many, racemose to glomerate, erect, surrounded by pectinately spiny bracts with long pungent spines. Involucre ovoid, ca. 2(-3) cm in diam., glabrous or very sparsely cobwebby. Phyllaries in ca. 7 rows, lacking an abaxial resinous gland, marginal spinules, wings, and scarious appendage; outer phyllaries 10-14 × 2-2.5 mm, basal portion triangular, apical portion subulate and narrowed into a 6-9 mm spine; middle phyllaries 12-13 × ca. 2.5 mm, basal portion ovate, apical portion subulate and narrowed into a 5-6 mm spine; inner phyllaries linear to linear-lanceolate, 12-15 × 1.5-2 mm, apex acuminate and scarious. Florets bisexual. Corolla red, ca. 1.9 cm, tube ca. 8 mm. Achene brown, ca. 5 mm. Pappus bristles brownish, ca. 1.5 cm. Fl. and fr. Jul-Oct.

Alpine meadows, forests, by water, wastelands; 1700-3000 m. Xinjiang (Tian Shan) [Kazakhstan, Uzbekistan].


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