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

37. Aster sphaerotus Y. Ling, Fl. Reipubl. Popularis Sin. 74: 145. 1985.

圆耳紫菀 yuan er zi wan

Erigeron panduratus C. C. Chang, Sunyatsenia 6: 17. 1941, not Aster panduratus Nees ex Walpers (1843).

Herbs, perennial, 30-40 cm tall, rhizomatous; stolons long, slender. Stems erect, simple, purplish striate, ± densely villous, very sparsely minutely stipitate glandular, more densely long-stipitate glandular under leaves. Leaves cauline, gradually reduced upward, petiole base and midvein marcescent, abaxially purplish, sparsely villous, veins sparsely minutely stipitate glandular (long stipitate at base and on petiole), adaxially villous to pilose, minutely stipitate glandular apically, margin serrate, ciliate, midvein prominent abaxially, apex obtuse to acute, mucronate; lowest leaves withered by anthesis, lower to upper leaves narrowly to broadly winged petiolate (petiole to 1.3 cm, petiole base auriculate-clasping, proximal margin villous) or sessile, ovate or pandurate to lanceolate-pandurate, 2.5-3.5 × 0.7-2 cm, base attenuate or auriculate, clasping; synflorescence leaves shortly petiolate, ovate to lanceolate, 1-2.3 × 0.4-1 cm. Capitula 3-5 in terminal, corymbiform synflorescences; peduncles 10-42 mm, villosulous, densely minutely long-stipitate glandular; bracts ovate to lanceolate, entire. Involucres hemispheric, 7-8(-10) mm; phyllaries 4-seriate, unequal, abaxially glabrous, densely minutely stipitate glandular, base usually hardened, midvein prominent, translucent; outer phyllaries bractlike, linear-lanceolate, 5-5.5 × 1-1.2 mm, distal 1/2 leaflike, margin not or ± narrowly scarious, ciliate, densely minutely stipitate glandular, apex spreading, sometimes squarrose, acute, sometimes mucronulate, purplish, middle and inner phyllaries with margin erose, ciliate, apex long acuminate, tip leaflike, purplish; middle phyllaries oblong, 6-8 × 1.3-1.5 mm, margin broadly scarious, ciliate; inner phyllaries linear-lanceolate, 8-8.5 × 1-1.2 mm, scarious. Ray florets 35-40, purplish to pink, tube sparsely hairy, lamina 7-9 × 1-1.2 mm, eglandular; disk florets yellow, ca. 4 mm, tube and limb base sparsely hairy, eglandular, limb campanulate, 2.2-2.5 mm, lobes erect to spreading, narrowly triangular, ca. 1 mm, glabrous, eglandular. Achenes (immature; shape unknown) ca. 2.7 mm or more, sparsely strigillose, minutely stipitate glandular, 2-ribbed. Pappus 3-seriate, reddish, of slender barbellate bristles; outermost bristles few, 1.3-1.6 mm; inner bristles 3.3-3.7 mm, tapering; innermost bristles 3.5-4 mm, long clavate. Fl. Jul-Aug, fr. Aug(to later).

● Mountain forests; ca. 2700 m. W Guangxi.


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