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11. Minuartia Linnaeus, Sp. Pl. 1: 89. 1753.
米努草属 mi nu cao shu
Lu Dequan; John McNeill
Herbs annual or perennial. Stems caespitose or solitary, prostrate; branches ascending or erect. Leaves linear, linear-subulate, or setaceous, 1- or 3-veined. Inflorescence cymose or flowers solitary. Sepals 5, 1- or 3-veined. Petals 5, white, rarely reddish, apex entire or emarginate. Stamens 10. Ovary 1-loculed; ovules numerous. Styles 3. Capsule narrowly ovoid or ovoid-cylindric, 3-valved. Seeds ovoid, reniform, or discoid; raphe sometimes tuberculate or fimbriate tuberculate.
About 120 species: Arctic regions to the Himalayas, also Chile (one species), Ethiopia, and Mexico; nine species in China.
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| 1 |
Plants annual; petals shorter than sepals |
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1 M. regeliana |
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Plants perennial; petals equaling or longer than sepals. |
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(2) |
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| 2 (1) |
Plants 10--30 cm tall. |
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(3) |
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Plants 3--10(--13) cm tall. |
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(4) |
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| 3 (2) |
Capsule ca. 2 × as long as sepals; sepal apex obtuse; seeds rugulose striate, raphe fimbriate tuberculate |
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2 M. laricina |
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Capsule equaling sepals; sepal apex long acuminate; seeds subsmooth |
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3 M. kryloviana |
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| 4 (2) |
Flowers solitary; sepals 5--7 mm, apex obtuse. |
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(5) |
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Flowers borne in sparse cymes; sepals 3--5 mm, rarely longer and then apex acute. |
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(6) |
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| 5 (4) |
Seed raphe bluntly tuberculate |
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4 M. arctica |
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Seed raphe fimbriate tuberculate |
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5 M. macrocarpa var. koreana |
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| 6 (4) |
Petals subequaling sepals. |
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(7) |
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Petals 2--3 × as long as sepals. |
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(8) |
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| 7 (6) |
Petals oblong, base cuneate; sepal apex obtuse; seeds smooth or rugose |
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6 M. biflora |
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Petals ovate, base abruptly contracted into a very short claw; sepal apex acute to shortly acuminate; seeds sharply tuberculate |
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7 M. verna |
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| 8 (6) |
Leaves 4--5(--10) mm; sepals lanceolate; capsule narrowly ellipsoid, subequaling sepals |
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8 M. litwinowii |
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Leaves 10--20 mm; sepals ovate-lanceolate; capsule ovoid, longer than sepals |
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9 M. kashmirica |
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Lower Taxa
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Treatments in Other Floras @ www.efloras.org
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