裸菀 luo wan

Asteromoea piccolii (J. D. Hooker) Handel-Mazzetti; Gymnaster piccolii (J. D. Hooker) Kitamura; Kalimeris piccolii (J. D. Hooker) S. Y. Hu; Miyamayomena piccolii (J. D. Hooker) Kitamura.

Herbs, perennial, 60-120 cm tall, rhizomatous. Stems erect, simple, sometimes branched in upper part, finely striate, strigillose, sparsely minutely stipitate glandular distally. Leaves cauline, gradually reduced upward, abaxially pale green (spongelike), adaxially green, both surfaces scabridulous, sometimes more sparsely so adaxially, abaxially minutely stipitate glandular in pits, margin coarsely serrate to serrate or entire (upper leaves), revolute, scabridulous, midvein prominent abaxially, apex acuminate, mucronate; lowest leaves withered by anthesis (not seen); lower to upper leaves shortly winged petiolate (petiole to 0.8 cm) or sessile, obovate or oblanceolate to narrowly lanceolate, 4-9 × 1.2-1.8 cm, base attenuate; synflorescence leaves sessile, linear-lanceolate, 2.1-2.8 × 0.4-0.5 cm, base cuneate, margin strongly revolute, entire. Capitula numerous in terminal or axillary corymbiform synflorescences; peduncles 20-60 mm, strigillose, minutely stipitate glandular; bracts linear-lanceolate, entire, distally grading into phyllaries. Involucres hemispheric, 4-5 mm; phyllaries 3-6-seriate, unequal, often squarrose, green distally, abaxially distally sparsely strigillose, sparsely minutely stipitate glandular, margin scarious, erose, sometimes purplish, ciliate, midvein enlarged basally, almost keeled, distally ± translucent, apex obtuse to acute, erose, purplish, ciliate; outer phyllaries oblong, ca. 3 × 1.3 mm; middle phyllaries oblanceolate, 3.5-4 × ca. 1.2 mm, base hardened; inner phyllaries broadly oblanceolate, 4-5 × ca. 1.5 mm. Ray florets 10-26, purple-blue, veins prominent, tube sparsely minutely stipitate glandular, lamina 7-8.5 × 1-2.5 mm, glabrous; disk florets yellow, 3-4 mm, veins prominent, tube base flared, tube and limb base glabrous, minutely stipitate glandular, limb campanulate, 2-2.5 mm, lobes spreading, lanceolate, 0.8-1.5 mm, glabrous, minutely stipitate glandular. Achenes oblanceolate, 2.7-3 mm, sparsely strigose to glabrate or glabrous, minutely stipitate glandular distally, 3-6-ribbed. Pappus of ray absent, of disk 1-seriate; outermost series of scales 0.2-0.5 mm. Fl. Aug-Oct.

● Grasslands on slopes; 900-1700 m. Gansu, Guizhou, Henan, Shaanxi, Shanxi, Sichuan.

Specimens of Aster piccolii were not seen by one of us (Brouillet).