COMMENTED CHECKLIST OF PLANTS FROM THE LO S-TUXTLAS BIOLOGICAL STATION, VERACRUZ, MEXICO

The Estacion de Biologia Tropical ''Los Tuxtlas'', (Mexico) an ecologi cal reserve of about 640 ha with tropical rain forest, has a vascular flora of about 940 species, 543 genera, and 137 families. For each spe cies, a short description, growth form, height, kind and position of l eaves, flower color, fruit color and type, phenology, uses, common nam e, and revised specimens are provided. The most diverse families in th e preserve are Orchidaceae (108 species), Polypodiaceae s. l. (62), As teraceae (60), Fabaceae s. l. (58) and Rubiaceae (39). The numerically more important genera are Epidendrum (16), Ficus (15), Piper (13), Eu patorium (11), and Psychotria (11). Trees and herbs are the most frequ ent growth forms: 31.78 and 30.4% respectively. This paper includes pa rt 1 of the list.