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

4. Aster sect. Asteromoea (Blume) Makino, Bot. Mag. (Tokyo). 12: 60. 1898.

马兰组 ma lan zu

Asteromoea Blume, Bijdr. 901. 1826; Aster subg. Kalimeris Cassini; Hisutsua Candolle; Kalimeris (Cassini) Cassini; Martinia Vaniot (1903), not Crié (1889) [fossil].

Herbs, perennial, usually simple, erect. Leaves basal (withered at anthesis) and cauline; blade cordate, broadly ovate, ovate, oblanceolate to oblong, or linear, margin flat, entire, dentate, serrate, or pinnatifid, sometimes pinnatilobate, 1-veined. Capitula radiate, terminal, in corymbiform synflorescences or solitary at ends of branches. Involucres hemispheric; phyllaries 3- or 4-seriate, unequal, not keeled, margin scarious. Receptacles ± conic or ± convex. Ray florets 1-seriate, 10-27, purple, lilac, blue, pink, or white; disk floret limb campanulate, lobes equal. Achenes obovoid to cylindric, ± compressed or sometimes triangular, 2-4-ribbed. Pappus of ray and disk florets 1-seriate, of persistent or deciduous, free (or rarely basally connate) short bristles or scales.

About ten species: C, E, and SE Asia, Himalayan region, E Russia; seven species (three endemic) in China.

The taxonomy of this group generally follows Gu and Hoch (Ann. Missouri Bot. Gard. 84: 762-814. 1997), except for treating the species in Aster sect. Asteromoea instead of Kalimeris.


1 Leaves broadly ovate to cordate, margin dentate.   18 A. longipetiolatus
+ Leaves oblong, ovate, or linear, margin entire, dentate, or pinnatifid   (2)
       
2 (1) Phyllaries subleathery, with scarious margins, apically rounded or obtuse, green or reddish purple; achenes 2.5-3.5 mm, sparsely long hairy; pappus 0.7-1.5(-2) mm   (3)
+ Phyllaries herbaceous in upper part, apically slightly acute; achenes 1.5-2.5 mm, glandular and puberulent in upper part; pappus 0.1-0.8 mm   (5)
       
3 (2) Involucre 10-12 mm in diam., phyllaries narrow and small, 4-5 mm; leaves incised-dentate or sometimes pinnatifid.   15 A. incisus
+ Involucre 10-15 mm in diam., phyllaries broader, 5-7 × 2-3 mm   (4)
       
4 (3) Leaves entire or pinnatifid, or shallowly dentate, leathery.   16 A. lautureanus
+ Leaves pinnatilobate, submembranous.   17 A. mongolicus
       
5 (2) Leaves linear-lanceolate, oblong, or lanceolate, entire or minutely 1-3-denticulate.   14 A. pekinensis
+ Leaves obovate-oblong or oblanceolate, dentate or pinnately lobed, often entire in upper part   (6)
       
6 (5) Leaves thinner, sparsely puberulent or subglabrous; achenes 1.5-2 mm; pappus 0.1-0.3 mm; leaf margin more variable.   12 A. indicus
+ Leaves thicker, densely velutinous; achenes 2.5-2.7 mm; pappus ca. 0.3 mm; leaf margin toothed in 1 or 2 pairs or subentire.   13 A. shimadae

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