亚东须弥菊 ya dong xu mi ju

Saussurea yakla C. B. Clarke, Compos. Ind. 227. 1876; Diplazoptilon cooperi (J. Anthony) C. Shih; Dolomiaea cooperi (J. Anthony) Y. Ling; Jurinea cooperi J. Anthony.

Herbs, perennial, stemless or shortly stemmed. Rosette leaves petiolate; petiole 2-6[-10] cm; leaf blade ovate, elliptic, or oblong in outline, 5-40 × 3-8 cm, bipinnately lobed to bipinnately divided, abaxially white with distinct dark veins, arachnoid tomentose, and glandular, adaxially green, puberulent, and sparsely glandular; segments 5-10 pairs, triangular, ovate, or oblong, 1-3.3 × 0.8-3.4 cm, margin dentate and mucronate, apex acute or obtuse and mucronate. Capitula (1-)3-8(-10), in a condensed corymbiform synflorescence in center of leaf rosette, sessile or subsessile. Involucre campanulate, 0.8-3 cm in diam. Phyllaries in 4-6 rows, light brown, green, or reddish, apex erect or reflexed; outer phyllaries narrowly triangular-ovate, 5-10 × 2-4 mm, apex acute; middle phyllaries narrowly ovate-elliptic, 10-18 × 2-4 mm; inner phyllaries narrowly elliptic to linear, 1.8-3 × 0.1-0.3 cm, apex obtuse. Receptacle bristles 3-5 mm. Corolla purple, 1.7-2.7 cm, tube 1.3-1.5 cm, limb ca. 5 mm, lobes 4-6 mm. Achene 2.5-5.5 mm, 4- or 5-angled, muricate, apex with a dentate crown. Pappus bristles dirty white to light brown, 1.6-2.5 cm. Fl. and fr. Aug-Nov. 2n = 34.

Alpine meadows, grasslands; ca. 4100 m. S Xizang (Yadong) [Bhutan, India (Sikkim), Nepal].