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Dahlia campanulata and D. cuspidata (Asteraceae, Coreopsideae): two new species from Mexico



Dahlia campanulata and D. cuspidata (Asteraceae, Coreopsideae): two new species from Mexico



Acta Botanica Mexicana (64): 19-24



Dahlia campanulata sp. nov. and Dahlia cuspidata sp. nov. from the Mexican states of Oaxaca and Hidalgo, respectively, are described and illustrated. D. campanulata is distinguished by its exceptionally large, pendulous, and campanulate flower heads; leaf petioles with enlarged clasping bases that are much thicker than in any other species of Dahlia; and enormous tubers that exceed 0.5 m in length.

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