(Last Modified On 2/7/2013)
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(Last Modified On 2/7/2013)
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Species
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RANUNCULUS REPENS L.
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PlaceOfPublication
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Sp. P1. 554. 1753.
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Synonym
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Ranunculus intermedius Eat. Man. Bot. 3: 1822. Ranunculus repens a glabratus DC. Prodr. 1: 38. 1824. Ranunculus clintonii Beck, Bot. N. & Mid. States 9. 1833. Ranunculus repens var. pleniflorus Fernald, in Rhodora 19: 138. 1917.
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Description
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Hirsute, prostrate to ascending perennials to 80 cm. tall, rooting at the lower nodes, the roots filiform. Cauline leaves alternate, hirsute, often glabrescent, the blades trifoliate, the leaflets often deeply 3-lobed and dentate, rhombic-deltoid, apically acute and apiculate, basally obtuse to acute, 2-4 cm. long, 1.5-3.0 cm. broad, the central petiolules 0.5-4.0 cm. long; petioles 1-20 cm. long, the swollen leaf base to 2.5 cm. long; radical leaves similar to the cauline but often with larger blades and longer petioles. Flowers mostly solitary in the upper axils, the pedicels 2-10 cm. long; sepals 5, greenish, 3-nerved, 4-7 mm. long, 2-4 mm. broad, caducous; petals 5, yellow, occasionally drying white, ellipsoid, obtuse, 5-13 mm. long, 3.5-10.0 mm. broad, the nectary flap semicircular, glabrous, ca. 0.5 mm. long, (1.0-1.3 mm. fide Benson); stamens numerous, 2-3 mm. long, the anthers about as long as the filaments; carpels numerous. Fruiting heads subglobose, 6.0-7.5 mm. long; achenes 20-25, subdiscoid, puncticulate, ca. 2.5 mm. long, 2.0-2.5 mm. broad, the beak ca. 1 mm. long, strongly recurved; fruiting pedicels 4-15 cm. long, the receptacle ca. 3 mm. long, pubescent.
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Distribution
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Presumably a native of Europe, but widely occurring in both North and South America.
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Specimen
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CHIRIQUI: rain forest, Bajo Chorro, Boquete District, 6000 ft., Davidson 444; valley of the upper R. Chiriqui Viejo, vicinity of Monte Lirio, 1300-1900 in., Seibert 159; vicinity of Bajo Chorro, 1900 in., Woodson & Schery 646.
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Note
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A Gray Herbarium duplicate of Woodson & Schery 646 was determined by Benson as R. repens. The duplicate in the herbarium of the Missouri Botanical Garden departs from Benson's description of R. repens in having unusually small floral parts and fewer carpels and stamens.
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