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1. Tillaea Linnaeus, Sp. Pl. 1: 128. 1753.
东爪草属 dong zhao cao shu
Fu Kunjun (Fu Kun-tsun); Michael G. Gilbert
Herbs often annual, small, usually glabrous. Roots fibrous. Stems erect or ascending, sometimes ± stoloniferous at base. Leaves opposite, fused at base to form short sheath, flat or terete, margin entire. Inflorescences axillary, cymose, often shorter than subtending leaf, 1- to few flowered. Flowers bisexual, (3 or)4- or 5-merous, inconspicuous. Sepals free, spurless. Petals inconspicuous, free, dull white, greenish, pinkish, or yellowish, often translucent, sometimes shorter than sepals. Stamens as many as petals; filaments filiform. Carpels free. Stigma terminal. Follicles 1- to many seeded, dehiscent along adaxial suture. Seeds smooth, papillate, or striate.
About 16 species: almost worldwide; five species (two endemic) in China.
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| 1 |
Flowers sessile; sepals ovate, shorter than petals |
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1 T. aquatica |
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Flowers pedicellate; sepals linear-lanceolate to lanceolate, shorter or longer than petals. |
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(2) |
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| 2 (1) |
Carpels 5 |
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5 T. schimperi |
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Carpels 4. |
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(3) |
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| 3 (2) |
Stems ascending; nectar scales broadly obconical; seeds papillate |
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2 T. mongolica |
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Stems erect; nectar scales linear to spatulate; seeds longitudinally striate. |
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(4) |
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| 4 (3) |
Flowers in cymules; pedicels variable in length, always some much longer than sepals; petals shorter than sepals, apex acute |
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3 T. alata |
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Flowers solitary; pedicels ca. 1/2 as long as sepals; petals longer than sepals, apex obtuse |
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4 T. likiangensis |
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Lower Taxa
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Treatments in Other Floras @ www.efloras.org
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