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| Miconia waimiri-atroari Meirelles & Caddah, in Meirelles, Sartor, Chagas et Caddah, 2021. |
Abstract
Miconia waimiri-atroari is presented here as a new species from the Brazilian Amazon Forest. This new species has discolorous leaf blades, inflorescences with scorpioid branches, and petals and antesepalous stamen connectives with glandular trichomes. It has been misidentified as Miconia argyrophylla, another species from the Amazon Forest that has this same set of characters. However, the new species has cylindrical young branches (vs. quadrangular in M. argyrophylla), stellate trichomes on leaf abaxial surface (vs. arachnoid), stamens with yellow filaments that turn red in old flowers (vs. stamens with white filaments that only turn pale in old flowers), and style with glandular trichomes (vs. glabrous). At the moment, the species is only known from a small area north of Manaus, state of Amazonas, Brazil. Morphological description, illustrations, general comments and comparison to other similar species are also provided.
Albicans clade, Eudicots, Miconia argyrophylla, Neotropics, Taxonomy
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| Miconia waimiri-atroari. A: Branch with inflorescence. B: Flower. C: Style. D: Antesepalous stamen in lateral view. E: Antepetalous stamen in lateral view. F: Antesepalous stamen in ventral view. G: Petal. H: Fruit in upper view. I: Fruit in lateral view. Drawn by Carlos Alvarez based on the MG isotype. |
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| Miconia waimiri-atroari. A: Branch with leaves and inflorescence. Flower in detail, with thin arrow pointing to petal with glandular-ciliate margin, and thick arrows pointing to glandular trichome on antesepalous stamen connective. B: Inflorescence branch with buds and young flowers. C: Inflorescence branch with young and old flowers. D: Young and old flowers. A-B: Photos by Francisco Farroñay, C-D: Photos by Layon Oreste Demarchi. |
Miconia waimiri-atroari sp. nov.
Etymology:—The new species is named after the indigenous people of Waimiri-Atroari, whose territory is located near the BR-174, between Manaus (Amazonas) and Boa Vista (Roraima), where the species occurs. During the construction of the BR-174, mainly in the 1960’ and 1970’s, these people have suffered a massive genocide by the military government of that time, and lost part of their land to farmers, squatters and the state (Sousa et al. 2020).Besides the BR-174, the Balbina Dam and mining companies have also explored the land of the Waimiri-Atroari, contributing to population decrease from 3000 in 1972 to 350 people in 1983 (Damasio 2019). The epithet is a name in apposition.
Julia MEIRELLES, Mariana Furlan SARTOR, Rennan Lopes CHAGAS and Mayara Krasinski CADDAH. 2021. Miconia waimiri-atroari (Miconieae, Melastomataceae): A New Species from the Brazilian Amazon Forest. Phytotaxa. 521(3); 203-211. DOI: doi.org/10.11646/phytotaxa.521.3.5
