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22 September 2015 Three New Additions to the Guayana Shield-Endemic Steyerbromelia (Bromeliaceae) for Colombia with Comments on the Problematic Generic Delimitation within the Subfamily Navioideae
Julián Aguirre-Santoro, Julio Betancur, Bruce K. Holst
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Abstract

Two new species and a new combination for Steyerbromelia (Bromeliaceae: Navioideae) are presented. These novelties represent the first records of Steyerbromelia for Colombia. The new species, Steyerbromelia naquenensis and Steyerbromelia nukakii, were placed in Steyerbromelia based on the combination of their 3- or 4-divided inflorescences, presence of smooth posterior sepals, and ovate, shortappendaged ovules. Both species resemble each other and S. thomasii, which also occurs in the basin of the Upper Rio Negro. Steyerbromelia garcia-barrigae is transferred from Navia, despite the lack of petal appendages, because its morphological characteristics fit better the limits of Steyerbromelia. An updated description of this species is presented. We now consider Steyerbromelia to be a genus of nine species. Additionally, notes on the geographic distribution, vernacular names, conservation status, and taxonomic comments of the three species are provided, as well as a key to all of the species. Finally, a discussion on the difficulties to place these three species within a genus is presented to highlight the problems of generic delimitation of the subfamily Navioideae.

© Copyright 2015 by the American Society of Plant Taxonomists
Julián Aguirre-Santoro, Julio Betancur, and Bruce K. Holst "Three New Additions to the Guayana Shield-Endemic Steyerbromelia (Bromeliaceae) for Colombia with Comments on the Problematic Generic Delimitation within the Subfamily Navioideae," Systematic Botany 40(3), 737-745, (22 September 2015). https://doi.org/10.1600/036364415X689195
Published: 22 September 2015
KEYWORDS
Chiribiquete
Navia
neotropical plants
petal appendages
upper Rio Negro
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