A new species of Sipapoantha (Gentianaceae: Helieae) from northern Brazil

  • Lepis K
  • Maas P
  • Struwe L
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Abstract

A new species from Gentianaceae (tribe Helieae) is described from northern Brazil. Sipapoantha obtusisepala sp. nov. is distinct from the previously single member of the genus, Sipapoantha ostrina, by having a woody and branched habit, sessile and ovate leaves with an acute apex, and a smaller calyx with circular lobes. Sipapoantha obtusisepala is based on somewhat incomplete material and tentatively placed in Sipapoantha based on the pres- ence of key generic characters such as coriaceous leaves with strongly revolute margins and blue corollas. It has only been recorded from one locality in the Brazilian-Guyana border area in the state of Roraima.

Author-supplied keywords

  • Floristics
  • Gentianaceae
  • Helieae
  • Morphology
  • Neotropics
  • New taxa
  • Sierra baeta
  • South America

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Authors

  • Lena StruweEcology, Evolution and Natural Resources at Rutgers University

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  • K. B. Lepis

  • P. J M Maas

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