Abstract
Abstract: This study presents a synopsis of the tribe Cocoseae (Arecaceae) for the Maranhão state, which was based on the descriptive analysis of voucher specimens of national and international herbaria, from loans, collection visits, digital platforms, and materials collected in expeditions. Twenty-five species belonging to seven genera were identified. The genus Bactris Jacq. ex Scop. was the most representative with seven species, followed by Attalea Kunth. (five spp.), Syagrus Mart. (five spp.), Astrocaryum G. Mey. (three spp.), Desmoncus Mart. (three spp.), Acrocomia Mart (one spp.), and Allagoptera Nees (one sp.). Four new records of occurrence were found for Maranhão: Allagoptera leucocalyx (Drude) Kuntze, Attalea barreirensis Glassman, Attalea phalerata Mart. ex Spreng. and Syagrus glazioviana (Dammer) Becc. This paper presents a taxonomic key for the species, as well as geographic distribution maps and photographic plates with the distinguishing characteristics for each taxon. Besides the taxonomic characteristics, common names, ecological data, and conservation status are included.
Highlights
In the Brazilian state of Maranhão, that is situated in a transition area between Amazon, Cerrado and Caatinga biomes, there is the occurrence of 26 species belonging to the tribe Cocoseae (Flora do Brasil 2020 under construction)
Considering the relevance of this tribe and the need for further taxonomic studies to solve the disagreements regarding the tribe in Maranhão, the present study aims to elaborate the synopsis of the native species of Cocoseae in the State in order to contribute with the identifications and to increase the knowledge about the species in this region
A. x teixeirana is a fertile hybrid between Attalea eichleri (Drude) A.J.Hend. and Attalea speciosa Mart. ex Spreng., A. dahlgreniana is a possible hybrid between Attalea maripa (Aubl.) Mart. and Attalea speciosa, whereas C. nucifera is a palm tree widely cultivated in the Brazilian coast and possibly naturalized
Summary
Cocoseae belonging to Arecoideae subfamily stands out among the tribes of Arecaceae in Brazil It is abundant in many plant formations and has several species of sociocultural and economic value for local Brazilian communities (Pintaud et al 2008, Noblick et al 2013, Meerow et al 2015). In the Brazilian state of Maranhão, that is situated in a transition area between Amazon, Cerrado and Caatinga biomes, there is the occurrence of 26 species belonging to the tribe Cocoseae (Flora do Brasil 2020 under construction) This information about the species richness in Maranhao is different from what was pointed out by Lorenzi et al (2010) and Pinheiro (2011). This study presents an identification key for genera and species, as well as taxonomic notes, distribution maps, photographic plates, ecological information, commom names, and conservation status for all taxons
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