Bark Anatomy of Four Tropical Vitaceae from Veracruz, Mexico

Abstract

Bark anatomy of four species of Vitaceae growing at the tropical rain forest of Veracruz, Mexico, is described. Young and mature individuals were collected at the tropical biology field station 'Los Tuxtlas' . External, gross characteristics of the bark and microscopic features of young and adult individuals are given. Sectorization of the vascular tissues into minor and major areas was found in the three Cissus species, but not in Vitis tiliifolia, where it was apparent only at early stages of development. All the species studied have storied secondary phloem and very tall rays. The potential role of mucilage in water-holding capacity and the relationship of stem anatomy and aerial root formation are discussed.