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Abstract
F. Rindi and J.M. López-Bautista. 2007. New and interesting records of Trentepohlia (Trentepohliales, Chlorophyta) from French Guiana, including the description of two new species. Phycologia 46: 698–708. DOI: 10.2216/06–88.1
Four species of the genus Trentepohlia were collected from French Guiana, including two new to science. Trentepohlia chapmanii sp. nov. formed orange coatings on bamboo reeds and consisted of a thick and compact, pseudoparenchymatous prostrate part on which numerous thin and unbranched erect axes were borne. Trentepohlia infestans sp. nov. produced dark red discolorations on many concrete walls and consisted of crustose masses formed by globular or elliptical cells, from which numerous cylindrical erect axes, supporting sporangiate laterals, arose. Regeneration of sporangiate laterals on the same erect axes was frequently observed. Trentepohlia dusenii, a little-known species, was collected from a metal surface in a forest environment and characterized morphologically. Sporangiate laterals were first observed in this species, and the collection from French Guiana represented its first record for the Americas. Trentepohlia diffracta var. colorata was collected from tree bark in rain forest, representing the second record since the original description from Queensland.
ACKNOWLEDGMENTS
The study was funded by a grant of the US National Science Foundation to J.M.L.B. (Systematics Program DEB-0542924). Dr Bruno De Reviers is gratefully acknowledged for the loan of an authentic specimen of Trentepohlia dusenii (PC0110846) from the herbarium of the Museum National d' Histoire Naturelle, Paris. We are grateful to Frédéric Lecorre (Floramazone) for logistic support during the field trips to French Guiana and assistance with collection permits. Dr Jean-Jacques de Granville (Herbier de La Guyane, Cayenne) provided useful information. Prof. Michael Wynne (University of Michigan, Ann Arbor) provided information and help with bibliographic references.