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83. Ostericum Hoffmann, Gen. Pl. Umbell., ed. 2. 162. 1816.
山芹属 shan qin shu
Pan Zehui (潘泽惠); Mark F. Watson
Gomphopetalum Turczaninow.
Herbs, perennial. Stem hollow, ribbed. Petiole sheaths inflated; leaf blade 2–3-ternate-pinnate. Umbels compound, terminal and lateral; bracts few, lanceolate or linear-lanceolate; bracteoles several, linear to linear-lanceolate. Calyx teeth conspicuous, triangular or ovate. Fruit oblong-ovoid, base cordate, flattened dorsally; surface covered with many convex and shining dots; dorsal ribs prominent, the lateral broadly thin-winged; vittae 1–3 in each furrow, 2–8 on commissure; mesocarp thin, hollow in mature fruit. Seed face plane. Carpophore 2-cleft to base.
About ten species: C and E Asia, E Europe; seven species (three endemic) in China.
Ostericum is closely allied to Angelica; see the taxonomic comment under that genus.
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| 1 |
Ultimate leaf segments linear or oblong-lanceolate, entire or inconspicuously serrulate. |
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(2) |
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Ultimate leaf segments ovate to broad-elliptic, margin serrate, crenate or incised. |
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(3) |
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| 2 (1) |
Ultimate leaf segments entire; bracts 1–3, 5–8 mm. |
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1 Ostericum maximowiczii |
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Ultimate leaf segments margin inconspicuously serrate; bracts 6–8, ca. 4 mm. |
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2 Ostericum citriodorum |
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| 3 (1) |
Central umbels with short peduncles, lateral umbels opposite or cyclic with long peduncles; petals green. |
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3 Ostericum viridiflorum |
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Central umbels with long peduncles, lateral umbels not opposite nor cyclic, with short peduncles; petals white. |
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(4) |
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| 4 (3) |
Fruit vittae 1–3 in each furrow, 4–8 on commissure. |
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(5) |
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Fruit vittae 1 in each furrow, 2 on commissure. |
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(6) |
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| 5 (4) |
Bracts 2–5; fruit suborbicular, 5–7 mm. |
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4 Ostericum scaberulum |
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Bracts 1–2; fruit ellipsoid, 4–5.5 mm. |
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5 Ostericum sieboldii |
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| 6 (4) |
Petioles acute-triangular; bracts 1–4, unequal, apex long-aristate. |
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6 Ostericum huadongense |
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Petioles rounded; bracts 4–8, equal, apex acute. |
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7 Ostericum grosseserratum |
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List of lower taxa
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