Abstract
Two new Colombian species were identified in the Neotropical genus Symbolanthus (Gentianaceae: Helieae) during an ongoing revi- sionary study. Symbolanthus pterocalyx Struwe is characterized by its green to yellow corollas, strong- ly winged stems, and long-acuminate calyx lobes with a long, thin dorsal keel on each lobe. The other new species, Symbolanthus tetrapterus Stru- we, also has strongly winged stems, but corollas variously colored in green, white, pink, to red-violet and calyx lobes rounded and non-keeled. Both spe- cies are endemic to small areas in the Andes of western Colombia. The western outlier Cerro del Torra of the Cordillera Occidental in the province of Choco (Colombia) is the only known locality of
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