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4. Astilbe Buchanan-Hamilton ex D. Don, Prodr. Fl. Nepal. 210. 1825.
落新妇属 luo xin fu shu
Pan Jintang ; Hideaki Ohba
Herbs perennial. Rhizomes thick. Stems brown paleaceous hairy or long pilose. Leaves alternate, long petiolate, 2-4 × ternately compound, rarely simple; stipules membranous; leaflets lanceolate, ovate, or broadly ovate to elliptic, margin dentate. Inflorescence a terminal panicle, bracteate. Flowers white, lilac, or purple, bisexual or unisexual, rarely plants polygamous or dioecious. Sepals (4 or)5. Petals usually 1-5, sometimes more or absent. Stamens usually (5 or)8-10. Carpels 2(or 3), ± connate or free; ovary subsuperior or semi-inferior, 2(or 3)-loculed with axile placentation or 1-loculed with marginal placentation; ovules many. Fruit a capsule or follicle. Seeds small.
About 18 species: Asia, North America: seven species (three endemic) in China.
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| 1 |
Inflorescence sparsely flowered; petals 1-5 and obsolescent, or absent. |
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(2) |
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Inflorescence densely flowered; petals 5, not obsolescent. |
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(3) |
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| 2 (1) |
Sepals 5, subleathery, glandular hairy abaxially; petals 2-5 and obsolescent, or absent |
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6 A. macrocarpa |
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Sepals 4 or 5, submembranous, glabrous abaxially; petals absent, sometimes 1(-5) and obsolescent |
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7 A. rivularis |
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| 3 (1) |
Sepals glabrous at margin; petals spatulate to oblanceolate. |
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(4) |
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Sepals glandular ciliate at margin; petals linear or linear-oblanceolate. |
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(5) |
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| 4 (3) |
Plants 32-150 cm tall; sepal margin entire, apex obtuse; petals usually oblanceolate, 1-veined, obtuse or retuse at apex |
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4 A. longicarpa |
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Plants 15-30 cm tall; sepal margin sparsely dentate distally, apex truncate or rounded; petals usually spatulate, 4-6-veined, acute at apex |
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5 A. macroflora |
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| 5 (3) |
Sepals glandular hairy abaxially |
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3 A. rubra |
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Sepals glabrous abaxially. |
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(6) |
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| 6 (5) |
Panicle scarcely 12 cm in width, branches densely brown long crisped hairy; leaflets usually acute to shortly acuminate at apex |
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1 A. chinensis |
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Panicle to 17 cm in width, branches glandular pilose; leaflets usually shortly acuminate to acuminate at apex |
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2 A. grandis |
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Lower Taxa
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Treatments in Other Floras @ www.efloras.org
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