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Two New Genera of Neotropical Lauraceae and Critical Remarks on the Generic Delimitation
Jens G. Rohwer, Hans Georg Richter and Henk van der Werff
Annals of the Missouri Botanical Garden
Vol. 78, No. 2 (1991), pp. 388-400
Published by: Missouri Botanical Garden Press
Stable URL: http://www.jstor.org/stable/2399568
Page Count: 13
You can always find the topics here!Topics: Stamens, Genera, Anthers, Flowers, Parenchyma, Wood structure, Ovaries, Flowering, Sclereids, Botanical gardens
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Two genera, Chlorocardium and Paraia, are described, illustrated, and discussed. Chlorocardium includes two species previously placed in Ocotea and is known from Guyana and Surinam (C. rodiei), and Ecuador (C. venenosum). Paraia includes one species, P. bracteata, from the States of Pará and Amazonas, Brazil. Problems with generic placement of several other species are discussed. The usefulness of two-celled vs. four-celled stamens as a character to define genera is discussed, and examples of polyphyletic genera based solely on the two-celled condition are given.
Annals of the Missouri Botanical Garden © 1991 Missouri Botanical Garden Press