ibclogo XVI International Botanical Congess


Abstract Number: 4912
Session = 3.13.4


THE CONSTRUCTIONAL PATTERNS OF THE FLOWERING AND VEGETATIVE GROWTH UNITS (FVU) CONFORMING ANGIOSPERMOUS PLANTS


L. E. Mora- Osejo, Academia Colombiana de Cien. Exa., Santafé de Bogotá, Colombia.


The comparative study of a large number of tropical angiospermous plants of different growthform and belonging to taxa of the same or distinct rank led to the recognition of the basic constructional patterns to which the high diversity of architectural features of whole herbaceous plants or of individual flowering shoots, from trees and shrubs, may be referred. Every flowering herbaceous angiosperm plant or flowering shoots, of trees and shrubs, whether with a complex or a simple architecture, are configured by a variable number of Flowering and Vegetative Growing Units, FVU. These units are made of two functionally different components of variable extension and complexity. They are: the trophotagma and the anthotagma. The diverse ways that these two components are interconnected, can be referred to three basic constructional patterns: holocaulons, anthoblasts and anthocaulons. Holocaulons with a extensive or with a reduced trophotagma represent the most primitive condition, while anthocaulons and anthoblasts are considered derived states. Pseudanthia are highly specialized antoblasts, while antho-cladia and anthocladioids are respectively sympodially linked one flowered monotelic holocaulons or high specialized anthoblasts that flower synchronously. At the other side, it could be demonstrated that three main constructional patterns of the FVU originate the whole plant (herb, shrub or tree) architectural basic model.


HTML-Version made 7. July 1999 by Kurt Stüber