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6. Fagopyrum Miller, Gard. Dict. Abr., ed. 4. [495]. 1754.
[nom. cons.]
荞麦属 qiao mai shu
Li Anjen (李安仁 Li An-ren); Suk-pyo Hong
Herbs annual or perennial, rarely subshrubs, monoecious. Stems erect, glabrous or pubescent. Leaves simple, alternate, petiolate; leaf blade triangular, cordate, broadly ovate, sagittate, or linear; ocrea membranous, oblique, margin entire, apex acute or truncate. Inflorescence racemose or corymbose. Flowers bisexual. Perianth persistent, 5-parted; tepals 5, not accrescent. Stamens 8. Styles 3, elongate; stigmas capitate. Achenes trigonous, not winged or horned at base.
About 15 species: Asia, Europe; ten species (six endemic) in China.
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| 1 |
Subshrub or perennial herb. |
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(2) |
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Annual herb. |
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(4) |
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| 2 (1) |
Subshrub; leaves sagittate or ovate-triangular, apex long acuminate or caudate. |
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1 F. urophyllum |
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Perennial herb; leaves broadly ovate or triangular, apex acuminate or acute. |
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(3) |
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| 3 (2) |
Stems and branches leafless above; leaves broadly ovate or triangular, 2-3 cm, ocrea apically acute; pedicel articulate at apex; achenes ovoid, 2-2.5 mm. |
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2 F. statice |
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Stems and branches leafy above; leaves triangular, 4-12 cm; ocrea apically truncate; pedicel articulate at middle; achenes broadly ovoid, 6-8 mm. |
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3 F. dibotrys |
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| 4 (1) |
Achenes grooved; angles rounded below middle, sharply acute above; pedicel articulate at middle. |
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4 F. tataricum |
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Achenes not grooved; angles sharply acute; pedicel apically articulate or not articulate. |
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(5) |
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| 5 (4) |
Leaves cordate; inflorescence capitate. |
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5 F. gilesii |
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Leaves not cordate; inflorescence racemose, corymbose, or filiform, terminal spikelike panicle. |
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(6) |
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| 6 (5) |
Stems, branches leafless above. |
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6 F. leptopodum |
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Stems, branches leafy above. |
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(7) |
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| 7 (6) |
Leaves triangular or ovate triangular, 1.5-5 cm wide; inflorescence racemose or corymbose. |
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(8) |
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Leaves linear, triangular-sagittate, or narrowly sagittate, 0.2-1 cm wide; inflorescence a dense or lax filiform terminal spikelike panicle. |
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(9) |
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| 8 (7) |
Inflorescence lax, interrupted; pedicel articulate at apex; achenes ca. 3 mm; plants wild. |
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7 F. gracilipes |
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Inflorescence dense, not interrupted; pedicel not articulate; achenes 5-6 mm; plants cultivated. |
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8 F. esculentum |
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| 9 (7) |
Leaves linear. |
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9 F. lineare |
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Leaves triangular-sagittate or narrowly sagittate. |
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10 F. caudatum |
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List of lower taxa
| Related Links (opens in a new window) |
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Treatments in Other Floras @ www.efloras.org
Other Databases
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