ResumoEste trabalho tem como objetivo contribuir para o conhecimento taxonômico das espécies de Rhynchospora ocorrentes nas restingas do estado do Pará, Brasil. Foram analisados os acervos dos herbários MG, IAN e HBRA, e ainda dos herbários INPA, HURB, NY e UEC (online). As espécies foram determinadas através de literaturas especializadas e por consulta às opera principia e typi digitalizados disponíveis na internet. AbstractThis study aimed to contribute to our knowledge of the taxonomy of Rhynchospora species found on the sandy coastal plains of Pará state, Brazil. We analyzed collections from the herbaria MG, IAN and HBRA, as well as INPA, HURB, NY and UEC online. The species were identified based on specialized literature and by consulting the opera principia and typi available online. We found 10 species of Rhynchospora for the sandy coast of Pará: R. barbata, R. cephalotes, R. filiformis, R. hirsuta, R. holoschoenoides, R. nervosa, R. puber, R. riparia, R. rugosa and R. spruceana. An identification key, diagnostic characters, geographic distribution, illustrations and comments on the taxonomy of each species are presented. Furthermore, we designate neotypi for R. nervosa and R. riparia, and a lectotypus for R. puber.

This study aims to contribute to the knowledge on the taxonomy of Scleria in sandy coastal plains (restinga) in Pará state, Brazil. Material deposited in the herbaria of Museu Paraense Emílio Goeldi (MG), Embrapa Amazônia Oriental (IAN), and Instituto de Estudos Costeiros da Universidade Federal do Pará (HBRA) were analyzed and species were identified using relevant literature, protologues, and types available online. We recorded nine species of Scleria for restinga in the state: Scleria bracteata, S. gaertneri, S. hirtella, S. interrupta, S. macrophylla, S. microcarpa, S. reticularis, S. secans, and S. violacea. An identification key, descriptions, illustrations, and comments about diagnostic characters and geographic distribution are provided for these species.

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RESUMO -Este estudo apresenta um tratamento taxonômico dos gêneros e espécies de Cyperaceae Juss. encontrados nos campos de natureza de Cametá, Pará, Amazônia, Brasil. Após intensas expedições a campo e estudos de coleções de herbários, foram identificados 11 gêneros e 51 espécies de Cyperaceae para a área:

The present study analyzes the diversity of Scleria in the state of Pará and presents taxonomic treatments for all recorded species. The analysis was based on extensive herbarium studies (CEN, HBRA, HCJS, HSTM, IAN, IBGE, INPA, MFS, MG, RB, and UB) and field expeditions to several municipalities of the state of Pará. Specimens were identified using relevant literature, protologues, and type specimens available online. We recognize 30 species of Scleria arranged in two subgenera and nine sections. Four species (i.e., Scleria arguta, S. burchellii, S. longigluma, and S. vaginata) represent new records for Pará, and a new species is proposed (i.e., Scleria sp.). An identification key, descriptions, illustrations, and comments on diagnostic characters, geographic distribution and habitat for all species are also provided.

Abstract— A new species of Alophia (Tigridieae, Iridaceae), only known from the Brazilian Amazon, is here described and illustrated. Alophia graniticola was found growing over granite outcrops in the Serra dos Carajás mountain range, Pará state, Northern Brazil, inside or at the edges of dry deciduous forests. This is the third native species of Alophia registered in Brazil, differing from the other species of the genus by the anthers with an incurved apex, an unprecedented feature in the genus. An identification key for all Alophia species is also provided.

This study focuses on the Cyperaceae occurring in the Serra dos Martírios-Andorinhas (Serra dos Martírios- Andorinhas State Park, and São Geraldo do Araguaia Environmental Protection Area), in the São Geraldo do Araguaia municipality, state of Pará, Brazil. The Serra is in the “Deforestation Arc”, an environmentally vulnerable area with the highest deforestation rates in the Amazon Forest. The predominant phytophysiognomy is the Amazonian savanna, characterized by open environments dominated by herbaceous plants, such as Cyperaceae, represented by only four species in a previous floristic inventory. Studying the diversity of Cyperaceae allows us to a better understanding of the herbaceous layer’s dynamics and assisting in the conservation, monitoring, and management of these fascinating and peculiar environments. Therefore, 276 field and herbarium samples of Cyperaceae from Serra dos Martírios-Andorinhas were examined. Now, Cyperaceae are represented by 12 genera and 72 species in the study area, of which seven represent new records for the State of Pará. A taxonomic identification key, short descriptions with main diagnostic characters, geographic distribution, habitat data, and illustrations for all species and genera are provided.

We provide typifications and taxonomic notes for Neomarica humilis and some related species, to retain the taxonomic stability in Neomarica (Trimezieae, Iridaceae). We recognize Cypella humilis, the basionym of N. humilis, as a replacement name for the illegitimate Marica humilis, and N. vittata as a superfluous illegitimate name. We discuss the identity of the material cited by Klatt for C. humilis and designate a lectotype for M. humilis. In addition, we designate a neotype for N. occidentalis and a lectotype for N. portosecurensis. Furthermore, we distinguish N. humilis from the taxonomically related N. brachypus¸ N. northiana, and N. portosecurensis. All four species are illustrated.