Abstract
Paullinia lachnocarpa has been known only from flowering and immature fruiting material collected in Ecuador. A recent collection with mature fruit shows that this biternate-leaved plant with multi-stelar stems and schizocarpic (indehiscent) fruit is best placed in its own genus,Chimborazoa. The only known species isChimborazoa lachnocarpa, which appears to be endemic to mountainous areas (1200–2000 m) in the provinces Chimborazo and Cotopaxi, Ecuador. The pollen morphology ofChimborazoa differs from that ofPaullinia. The lectotypification ofP. lachnocarpa is discussed, the new genus is described and illustrated, and a key to the genera of the Paullinieae is provided.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Literature Cited
Acevedo-Rodríguez, P. 1989. The systematics ofSerjania sectionPlatycoccus (Sapindaceae). Ph.D. thesis. City University of New York.
-. 1991.Serjania lancistipula (Sapindaceae), a new species from Bahia, Brazil. Brittonia 43: 165–167.
Beck, H. T. 1991. The taxonomy and economic botany of the cultivatedguaraná and its wild relatives and the generic limits within the Paullinieae (Sapindaceae). Ph.D. thesis. City University of New York.
Cruz, M. A. V. da &T. S. Melhem. 1984. Estudos polínicos em Sapindaceae. Rev. Brasil. Bot. 7: 5–25.
Muller, J. &P. W. Leenhouts. 1976. A general survey of pollen types in Sapindaceae in relation to taxonomy. Pages 407–445.In: I. K. Ferguson & J. Muller, editors. The evolutionary significance of the exine. Academic Press, London.
Radlkofer, L. 1895–96. Paullinia sapindacearum genus monographice descriptum. Monographie der Sapindaceen—Gattung Paullinia. Verlag der k. Akademie, München.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Beck, H.T. Chimborazoa (Sapindaceae), a new genus from Ecuador. Brittonia 44, 306–311 (1992). https://doi.org/10.2307/2806929
Issue Date:
DOI: https://doi.org/10.2307/2806929