ISHS Acta Horticulturae 813: VI International Symposium on New Floricultural Crops
ORNAMENTAL POTENTIAL OF NATIVE VEGETATION FROM "CAMPOS GERAIS, BRAZIL" |
| Authors: | E.C. Mielke, F.J. Ribeiro do Valle, C.B. Poliquesi, F.L. Cuquel |
| Keywords: | ornamental plant, floriculture, prospecting, invasive alien species |
| Abstract:
As a consequence of the introduction of alien/invasive plants the “Campos Gerais” Region in Paraná State, Brazil, has been determined as a strategic area for the study of the local flora. Invasive species together with the pressures associated with agriculture, grazing fields, extraction from medicinal plants, extraction for food purposes, timber production and urban expansion have contributed to the extinction of native plants. “Campos Gerais” is comprised of the oldest vegetation of Paraná State. It is a natural phytogeographic zone, with clean fields and gallery woods or isolated formations of mixed forest where Araucaria angustifolia grows. The predominant vegetation is grass steppe. The grass has a high value for landscaping due to its reduced size and tolerance to shallow and sandy soil of low fertility. The objective of this paper was to survey native vegetation with ornamental potential in “Campos Gerais”. Initially a preliminary survey selected families through the evaluation of herbarium specimens from the Municipal Botanical Museum. The following families were prominent: Asteraceae, Boraginaceae, Caesalpiniaceae, Fabaceae, Lamiaceae, Lythraceae, Malpighiaceae, Melastomataceae, Myrtaceae, Portulacaceae, Solanaceae, and Verbenaceae. The sites reported in the register files were used for planning field expeditions. Explorations happened in a randomized manner allowing during flowering season. Of the twelve expeditions performed, the following families were identified: Apiaceae, Boraginaceae, Bromeliaceae, Fabaceae, Gesneriaceae, Lythraceae, Mimosaceae, Portulacaceae, Pteridophyta and Sterculiaceae. The recovery of the following species was noted: Gomphrena officinalis var. macrocephal, Callibrachoa caesia, Lavoisiera phylocalycina, Paepalanthus polyanthus. | |
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