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A revision of asterogyne (Arecaceae: Arecoideae: Geonomeae)

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Abstract

A taxonomic revision of the neotropical genusAsterogyne Hook. (Arecaceae: Arecoideae: Geonomeae) is presented. The genus is characterized by one autoapomorphic character, the separation of anther thecae by a bifid connective, and the combination of small to medium-sized stems, bifid simple leaf blades, floral pits in bud covered by a rounded upper lip that overlaps a lower lip, and pistillate flowers with staminodial lobes that are displayed in a starlike shape. Five species are recognized in this treatment: one of them (Asterogyne martiana) is widely distributed from Belize in Central America to northern Ecuador, three species (A. ramosa, A. spicata, andA. yaracuyense) are endemic to small areas in the Venezuelan Coastal Range, and one species (A. guianensis) is endemic to eastern French Guiana. The taxonomic history, morphology, reproductive biology, distribution and ecology, intrageneric relationships, and conservation status are reviewed.

Resumen

Se presenta una revisión taxonómica del género neotropicalAsterogyne Hook. (Arecaceae: Arecoideae: Geonomeae). El género se caracteriza por un carácter autoapomórfico, tecas separadas por un conectivo bífido, además de tener tallos de pequeño a mediano tamaño, láminas foliares enteras y bífidas, fóveas florales cubiertas por un labio superior redondeado que sobrelapa el labio inferior, flores pistiladas con lóbulos estaminodiales dispuestos de manera estrellada. Para este tratamiento se reconocen cinco especies: una de ellas (Asterogyne martiana) ampliamente distribuida desde Belice en América Central hasta el norte de Ecuador, tres especies (A. ramosa, A. spicata, andA. yaracuyense) endémicas de pequeñas áreas en la Cordillera de la Costa de Venezuela y una especie (A. guianensis) endémica del oriente de la Guyana Francesa. Se revisa la historia taxonómica, morfología, biología reproductiva, distribución, ecología, relaciones intragenéricas y estado de conservación.

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Authors and Affiliations

  1. Institute of Systematic Botany, University of Zurich, Zollikerstrasse 107, CH-8008, Zurich, Switzerland

    Fred W. Stauffer

  2. Department of Ecology, Royal Veterinary and Agricultural University, Rolighedsvej 21, DK-1958, Frederiksberg C, Denmark

    Conny B. Asmussen

  3. Institute of Systematic Botany, The New York Botanical Garden, 10458-5126, Bronx, NY, U.S.A.

    Andrew Henderson

  4. Institute of Systematic Botany, University of Zurich, Zollikerstrasse 107, CH-8008, Zurich, Switzerland

    Peter K. Endress

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  1. Fred W. Stauffer
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  3. Andrew Henderson
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  4. Peter K. Endress
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Stauffer, F.W., Asmussen, C.B., Henderson, A. et al. A revision of asterogyne (Arecaceae: Arecoideae: Geonomeae). Brittonia 55, 326–356 (2003). https://doi.org/10.1663/0007-196X(2003)055[0326:AROAAA]2.0.CO;2

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  • DOI: https://doi.org/10.1663/0007-196X(2003)055[0326:AROAAA]2.0.CO;2

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