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73. Pachypleurum Ledebour, Fl. Altaic. 1: 296. 1829.
厚棱芹属 hou leng qin shu
Pu Fading (溥发鼎 Pu Fa-ting); Mark F. Watson
Arpitium Necker & Sweet.
Herbs, perennial. Taproot stout, usually branched. Stem single or multicipital, usually short, sometimes acaulescent, base densely clothed with fibrous remnant sheaths. Basal leaves 2–3-pinnate or ternate-2–3-pinnate. Umbels compound, terminal sessile, laterals pedunculate; bracts several, lanceolate or linear-lanceolate; rays 5–40; bracteoles lanceolate or linear-lanceolate, entire or 1–2-pinnate. Calyx teeth prominent, triangular or lanceolate. Petals white or purple, oblong-ovate or cordate-ovate, base cuneate or shortly clawed, apex notched with small incurved lobule. Stylopodium conic or subglobose; styles longer than stylopodium. Fruit oblong-ovoid, ovoid or broadly ovoid, dorsally compressed; ribs all winged, subequal; vittae 1(–2) in each furrow, 2(–4) or absent on commissure. Seed face plane.
About six species: Asia, Europe; five species (four endemic) in China.
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| 1 |
Plants shortly caulescent to acaulescent; bracteoles 2–3-pinnate. |
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(2) |
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Plants distinctly caulescent, stems erect, ascending; bracteoles lanceolate or linear-lanceolate, entire. |
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(3) |
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| 2 (1) |
Calyx teeth lanceolate, ca. equaling stylopodium; fruit oblong-ovoid; dorsal ribs adjacent; commissure vittae 2, evident. |
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1 Pachypleurum nyalamense |
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Calyx teeth linear, several times longer than stylopodium; fruit ovoid; all ribs evenly spaced; commissure vittae absent. |
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2 Pachypleurum lhasanum |
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| 3 (1) |
Bracteoles lanceolate, margins white membranous; leaves 2-pinnate. |
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3 Pachypleurum alpinum |
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Bracteoles linear-lanceolate, margins scabrous; leaves ternate-2–3-pinnate. |
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(4) |
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| 4 (3) |
Plants 10–30 cm; rays 20–40; petals white; fruit broadly ovoid; vittae 1 in each furrow. |
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4 Pachypleurum xizangense |
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Plants 70–120 cm; rays 5–10; petals purple; fruit oblong-ovoid; vittae 2 in each furrow. |
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5 Pachypleurum muliense |
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Lower Taxa
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