A systematic histological analysis of palm fruits VII. The Cyrtostachydinae (Arecaceae) |
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Authors: | Frederick B Essig Louisa Litten |
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Institution: | (1) Institute for Systematic Botany, Department of Biology, SCA 110, University of South Florida, 4202 E. Fowler Ave., 33620-5200 Tampa, FL, U.S.A. |
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Abstract: | Fruit specimens representing five taxa of the genusCyrtostachys were examined histologically in order to characterize the pericarp anatomy of the monogeneric subtribe Cyrtostachydinae (tribe
Areceae, subfamily Arecoideae), as part of an ongoing survey of the family. The pericarp in this genus can be characterized
by a combination of papillate epidermis, heavy layer of tanniniferous/pigmented cells below the epidermis, a system of vascular
bundles with thick fibrous sheaths with purely fibrous bundles frequently above and below, absence of brachysclereids, and
a very thin sclerified locular epidermis. On the basis of pericarp structure alone, the genus might be most closely related
to theGronophyllum alliance of the subtribe Arecinae. This diverges somewhat from the hypothesis of relationship with theAreca group of the Arecinae resulting from two DNA-based phylogenetic studies, and even further from the hypothesis of relationship
withIguanura suggested by another DNA-based phylogenetic study. |
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Keywords: | Arecaceae Cyrtostachys palm fruit pericarp histology Palmae |
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