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1. Pilea sect. Achudemia (Blume) C. J. Chen, Bull. Bot. Res., Harbin. 2(3): 1. 1982.
五萼组 wu e zu
Achudemia Blume, Mus. Bot. 2: 57. 1856.
Herbs. Leaves 3-veined. Inflorescences unisexual, sometimes bisexual, arranged around the axis; female inflorescences cymose or nearly capitate. Male perianth lobes 5, imbricate. Female perianth lobes 5, subequal to each other and often to achene.
About three species: E Asia; three species in China.
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| 1 |
Leaf blade ± papery, margin inconspicuously serrate or crenate distally, rarely entire, often purplish abaxially; female inflorescences capitate; achene rhombic-ovoid, ca. 2 mm. |
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3 P. boniana |
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Leaf blade membranous, margin coarsely dentate, light green abaxially; female inflorescences cymose; achene ovoid, 1-1.4 mm. |
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(2) |
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| 2 (1) |
Leaf blade oblong-ovate, (5-)9-16 cm, lateral veins 6-8 each side; male inflorescences cymose-racemose, longer than leaves; female inflorescences laxly cymose; achene sunken on both surfaces, verrucose by margin. |
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1 P. hilliana |
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Leaf blade rhombic-ovate or ovate, rarely lanceolate, 1-6(-10) cm, lateral veins 2-3(-5) each side; male inflorescences often capitate, 1-1.5 cm; female inflorescences compactly cymose; achene slightly compressed, verrucose. |
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2 P. japonica |
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Lower Taxa
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