Asteraceae do campus Samambaia, UFG, Goiânia, Goiás
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Data
2024-12-09
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Universidade Federal de Goiás
Resumo
Asteraceae has a cosmopolitan distribution and is one of the largest families among angiosperms,
with approximately 25,000 species grouped into about 1,620 genera and 50 tribes. In the state of
Goiás, the family is represented by around 550 species across 133 genera. However, despite its
diversity, economic and ecological importance, such as in food, medicinal, and ornamental plants,
and its use in ecological restoration projects or even its impact on the economy as invasive plants
in crops, there are still few studies on this family in the state of Goiás, especially in urban areas of
the city of Goiânia. The Asteraceae family is common on the Samambaia campus of the Federal
University of Goiás, being frequent in both natural and anthropized environments. It is widely used
in Botany classes and academic projects. However, there is a lack of knowledge regarding the
diversity of species in this family in the area and identification keys to facilitate species
recognition. Therefore, the aim of this study was to expand the taxonomic knowledge of the genera
and species of the Asteraceae family occurring on the Samambaia campus of UFG, providing an
identification key, morphological descriptions, taxonomic comments, and illustrations of the
species. Weekly botanical collections were made from November 2023 to November 2024, using
the walking method. Fertile specimens found were collected and documented according to standard
taxonomy techniques, and incorporated into the collection of the Herbarium of the Federal
University of Goiás (UFG Herbarium). Specimens from the study area already deposited in the
UFG Herbarium were also used. All specimens examined were identified or had their identification
reviewed, and were also morphologically described and illustrated. The Asteraceae family is
represented in the study area by 49 species, belonging to 43 genera and 13 tribes. The tribes with
the greatest species richness were: Heliantheae, with 12 species; Vernonieae, with 7; Cichorieae
and Coreopsideae, with 5 each; Senecioneae, with 4 species; and Astereae, Eupatorieae, and
Milleriae, with 3 each. Following these are Gnaphalieae and Tageteae, with 2 species each, and
finally, Mutisieae, Inuleae, and Artemideae, with only 1 species each. The genera with the greatest
richness were Lactuca (3 species), followed by Bidens, Conyza, Cosmos, Emilia, Erechtites,
Tithonia, and Vernonanthura (2 species each), while the other genera were represented by only one
species each. Some species found in the study area have broad ecological valence and are widelydistributed, such as Ageratum conyzoides, Bidens pilosa, Blumea axillaris, Conyza sumatrensis,
Eclipta prostrata, Emilia fosbergii, Porophyllum ruderale, Tridax procumbens, and Youngia
japonica. Five species had their distribution extended to the state of Goiás: Lactuca indica,
Lactuca serriola, Sonchus oleraceus, Tithonia rotundifolia, and Youngia japonica. These results
highlight the importance of studies like this for improving knowledge on species distribution and
updating regional taxonomic richness
Descrição
Palavras-chave
Compositae, Florística, Cerrado, Floristics
Citação
ROCHA, Adrian Francisco. Asteraceae do campus Samambaia,
UFG, Goiânia, Goiás. 2024. 82 f. Trabalho de Conclusão de Curso
(Bacharelado em Ciências Biológicas) – Instituto de Ciências
Biológicas, Universidade Federal de Goiás, Goiânia, 2024.