Ranunculus oblitus (section Batrachium, Ranunculaceae), a new species from South America

GERHARD WIEGLEB; MICHEL DESFAYES; ALEXANDER A. BOBROV

doi:10.11646/phytotaxa.559.2.2

Issue: Vol. 559 No. 2: 23 August 2022

Type: Article

Published: 2022-08-23

DOI: 10.11646/phytotaxa.559.2.2

Page range: 132-144

Abstract views: 33

PDF downloaded: 2

Ranunculus oblitus (section Batrachium, Ranunculaceae), a new species from South America

GERHARD WIEGLEB⁺⁻
MICHEL DESFAYES⁺⁻
ALEXANDER A. BOBROV⁺⁻

Dept. of Ecology, Faculty of Environment and Natural Sciences, Brandenburg-University of Technology (BTU Cottbus-Senftenberg), Universitätsstr. 1, 03046 Cottbus, Germany

Rive de la Sarvaz 8, CH-1913 Saillon, Switzerland

Papanin Institute for Biology of Inland Waters RAS, Borok, Nekouz distr., Yaroslavl reg., 152742, Russia

Andes Mountains Aquatic plant Argentina Bolivia Chile Laminar leaves Morphological analysis Eudicots

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Abstract

Ranunculus oblitus, a new species of Ranunculus section Batrachium, is described from South America. The species is significantly different from the European laminar-leaved species R. aquatilis, and the Holarctic submerged species R. trichophyllus. It resembles the North Asian-North American species R. mongolicus differing by narrower petals, larger and fewer achenes. Available molecular data indicate affiliation to North American taxa of the R. trichophyllus group, especially R. porteri. The species occurs along the west coast of the continent from southern Peru to southern Chile, extending from sea level to an elevation of 4500 m a.s.l. in the Andes. There is some evidence that a second native Batrachium species occurs in South America.

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