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1. Ostericum maximowiczii (F. Schmidt ex Maximowicz) Kitagawa, J. Jap. Bot. 12: 232. 1936.
全叶山芹 quan ye shan qin
Plants 40–100 cm. Rhizome inconspicuous or slender and creeping. Stem 2–5 mm thick, thinly ribbed, sparingly branched above, glabrous or sparsely hispidulous. Basal and lower leaves petiolate, petioles 3–10 cm, sheaths narrow; blade triangular-ovate, 7–16 × 5–13 cm, 2–4-ternate-pinnate; ultimate segments linear to ovate-lanceolate, 1–4 × 0.5–0.9 mm, glabrous or hispidulous along nerves. Middle and upper leaves reduced, sheaths purplish, inflated. Umbels 3.5–7 cm across; bracts 1–3, broad-lanceolate, 5–8 mm, scarious-margined; rays 10–17, hispidulous; bracteoles 5–7, linear-lanceolate, acuminate; umbellules 10–30-flowered; pedicels glabrous. Calyx teeth broadly triangular-ovate, hispidulous. Petals suborbicular, base clawed. Fruit broad-ovoid, 4–5.5 × 3.5–5 mm; dorsal ribs prominent, marginal ribs broad-winged, broader than the body; vittae 1 in each furrow, 2–4 on commissure. Fl. Aug–Sep, fr. Sep–Oct.
Forests, grasslands, damp meadows, river banks; 2200–2300 m. Heilongjiang, Jilin, Sichuan [Korea, Russia].
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| 1 |
Rhizome inconspicuous; rays less than 10. |
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1d var. alpinum |
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Rhizome slender, creeping; rays 10–17. |
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(2) |
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| 2 (1) |
Leaf rachis geniculate, ultimate segments linear, 0.5–1 mm wide. |
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1c var. filisectum |
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Leaf rachis not geniculate, ultimate segments linear, linear-lanceolate to ovate-lanceolate, 1–9 mm wide. |
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(3) |
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| 3 (2) |
Stem 40–100 cm; ultimate leaf segments linear or linear-lanceolate, 1–4 mm wide. |
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1a var. maximowiczii |
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Stem up to 150 cm; ultimate leaf segments ovate-lanceolate, 5–9 mm wide. |
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1b var. australe |
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Lower Taxa
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