Herbs 1-3 m tall, perennial. Stems erect, branched above, stout, unwinged, sparsely cobwebby and with long multicellular hairs. Leaves concolorous, surface smooth, green, glabrous. Basal and lower cauline leaves sessile or with winged petiole; leaf blade ± narrowly elliptic to oblanceolate, 40-50 × ca. 20 cm, bipinnatipartite; primary segments 5-7 pairs; ultimate lobes obliquely triangular, fringed and tipped with ca. 3 mm spines; terminal lobe of segments narrowly lanceolate to broadly linear. Middle and upper cauline leaves sessile, gradually smaller upward, semiamplexicaul. Capitula several, terminal, racemose-paniculate, nodding. Involucre campanulate, 3.5-5 cm in diam., glabrous. Phyllaries imbricate, in ca. 10 rows, lacking an abaxial resinous gland, marginal spinules, wings, and scarious appendage; outer and middle phyllaries 1-4 × 0.1-0.3 cm, basal portion triangular to lanceolate, apical portion subulate and reflexed; inner and innermost phyllaries lanceolate to linear-lanceolate, 1.2-2.5 × ca. 0.2 cm, apex acuminate-subulate. Florets bisexual. Corolla purple to red, ca. 2.2 cm, tube filiform, ca. 1.6 cm. Achene ca. 4 mm. Pappus bristles dirty white, ca. 2.2 cm. Fl. and fr. Jun-Sep. 2n = 34.
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A herb. It is a thistle. It grows 1-3 m tall. It keeps growing from year to year. The leaves are 40-50 cm long by 20 cm wide. They are twice divided with 5-7 pairs of primary segments. The end segments are triangle shaped and have small spines.
Grassland in mountain valleys and mountain slopes, forests, forest margins, streamsides, near villages and in rock crevices; at elevations from 300-2,300 metres.
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It is a temperate plant. It grows in grasslands in mountain valleys between 300-2,300 m above sea level. In Yunnan.
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