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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.
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| 1 |
Leaves broadly ovate to cordate, margin dentate. |
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18 A. longipetiolatus |
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Leaves oblong, ovate, or linear, margin entire, dentate, or pinnatifid |
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(2) |
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| 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 |
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(3) |
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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 |
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(5) |
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| 3 (2) |
Involucre 10-12 mm in diam., phyllaries narrow and small, 4-5 mm; leaves incised-dentate or sometimes pinnatifid. |
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15 A. incisus |
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Involucre 10-15 mm in diam., phyllaries broader, 5-7 × 2-3 mm |
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(4) |
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| 4 (3) |
Leaves entire or pinnatifid, or shallowly dentate, leathery. |
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16 A. lautureanus |
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Leaves pinnatilobate, submembranous. |
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17 A. mongolicus |
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| 5 (2) |
Leaves linear-lanceolate, oblong, or lanceolate, entire or minutely 1-3-denticulate. |
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14 A. pekinensis |
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Leaves obovate-oblong or oblanceolate, dentate or pinnately lobed, often entire in upper part |
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(6) |
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| 6 (5) |
Leaves thinner, sparsely puberulent or subglabrous; achenes 1.5-2 mm; pappus 0.1-0.3 mm; leaf margin more variable. |
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12 A. indicus |
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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. |
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13 A. shimadae |
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List of lower taxa
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