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31. Ranunculus eschscholtzii Schlechtendal, Animadv. Bot. Ranunc. Cand. 2: 16. 1820.
Stems erect or decumbent from short or long caudices, 4-27 cm, glabrous, each with 1-3 flowers. Roots slender, 0.4-1.6 mm thick. Basal leaves persistent, blades reniform or cordate to obovate or broadly oblong, lobed or 3-parted, 0.5-4.1 × 0.8-3.7 cm, segments again 1(-2)×-lobed, base obtuse to cordate, apices of segments rounded in outline. Flowers: pedicels glabrous; receptacle glabrous or sparsely pilose; sepals 4-8 × 2-6 mm, abaxially glabrous or pilose; petals 5-8, 6-16 × 4-16 mm; nectary scale glabrous. Heads of achenes cylindric or ovoid, 5-10 × 4-7 mm; achenes 1.4-2 × 1-1.6 mm, glabrous or sparsely pubescent; beak lanceolate or subulate, straight (sometimes curved when immature), 0.6-1.8 mm.
Varieties 6 (5 in the flora): North America
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| 1 |
Ultimate segments and sinuses of basal leaves acute or acuminate. |
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(2) |
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Ultimate segments and sinuses of basal leaves rounded or obtuse (sometimes broadly rounded-acute). |
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(3) |
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| 2 (1) |
Leaf blade reniform, base truncate or cordate. |
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31b var. suksdorfii |
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Leaf blade obovate to broadly oblong, base obtuse or rounded. |
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31c var. eximius |
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| 3 (1) |
Middle segments of many basal leaves lobed and toothed or 2×-lobed. |
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31d var. trisectus |
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Middle segments of basal leaves unlobed or 1×-lobed. |
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(4) |
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| 4 (3) |
Caudices with few or no persistent leaf bases; basal leaves always 3-parted; widespread in w North America. |
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31a var. eschscholtzii |
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Caudices densely clothed with persistent leaf bases; basal leaves sometimes parted but usually merely lobed; California and w Nevada. |
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31e var. oxynotus |
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Lower Taxa
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