Leaf Anatomy of Two Populations of Notopleura agostinii (Steyerm.) C.M. Taylor (Rubiaceae) Growing in the Henri Pittier National Park, Maracay-Venezuela
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Abstract
Notopleura agostinii is ae Henri Pittier National Park endemic species. Leaf blade anatomy of two populations of this species, were studied in order to relate it to the habitat in which they develop. Blade samples were collected in plants growing in the transitional cloud forest (1100 m altitude) and at the cloud forest proper (1350 m altitude); they were fixed in FAA and processed following classical techniques used in optical microscopy. Leaf anatomy was described and some quantitative variables were ascertained. Leaf anatomical characteristics showed higromorphic feature presence: few parenchymal layers with some funnel-shaped cells, lax spongy parenchyma, relatively large stomata and scarce mechanical tissue, those characters were found to be more pronounced when plants grow in the cloud forest (1350 m altitude).
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