Abstract Radulaceae is one of the most isolated lineages of leafy liverworts. This family contains three genera and between 200 and 350 extant species worldwide. Most species belong to the genus Radula, which is subdivided into five subgenera and remains taxonomically challenging. In the framework of an integrative taxonomic revision of Radulaceae in tropical America, we are paying special attention to understudied features that may be taxonomically informative, such as spores. Here, we perform the first palynological evaluation of sixteen species of Radulaceae. The spores were processed by standard palynological techniques and described using light and electron microscopy. The spores of Radulaceae are isomorphic monads, apolar in species of the genus Radula and cryptopolar in Cladoradula, usually small to medium-sized, rarely large, inaperturate, with a circular to slightly elongated outline. The spore surface is ornamented with rounded elements, here called Granulate-type ornamentation, or with elongated elements, called Echinate-type ornamentation, and shows differences in each species. The palynological data, especially spore ornamentation, can make an important contribution to Radulaceae taxonomy for separating species or groups of species. The groups found here, however, do not fully correspond to generic and infrageneric circumscriptions as supported by molecular-phylogenetic evidence. liverworts 20 35 worldwide challenging America informative Here microscopy monads Cladoradula mediumsized, mediumsized medium sized, sized medium-sized large inaperturate outline elements Granulatetype Granulate type ornamentation Echinatetype Echinate data however molecularphylogenetic molecular phylogenetic evidence 2 3

Abstract The Brazilian Amazon forests are interspersed by savanna ecosystems distributed in the states of Amapá, Amazonas, Pará, Rondônia and Roraima, presenting different distribution patterns. The objective of this work was to evaluate the richness, composition and floristic similarity of the bryophyte flora from five disjunct savanna areas in the eastern Amazon and compare the richness with those of other savannas in Brazil. The collections were carried out from 2017 to 2018 in five localities of the eastern Amazon. Twenty-two species of mosses and 22 species of liverworts were registered. The composition was expected for savanna ecosystems with 27 species of generalists and 16 sun specialists. There was a striking floristic difference between the areas, and the clusters showed that the eastern Amazon savannas are formed by different compositions related to their area. This study made it possible to discover one new record for the state of Pará, five new records for the state of Amapá and one new record for the North region.

ABSTRACT Campinaranas are unique vegetation patches in the Amazonian biome, characterized by white-sand soils with relatively low nutrient content and subject to periodic flooding coupled with fluctuating groundwater levels. This study aimed to produce a synopsis of the bryophyte flora in Campinarana habitats by combining information from the literature with new collections made in the Uatumã Sustainable Development Reserve (Balbina, Central Amazonia), and areas of the middle Uaupés river (São Gabriel da Cachoeira, upper Rio Negro). One hundred and forty-three species were identified among mosses and liverworts, of which 68 are reported for the first time in Campinaranas. The species Frullania rio-janeirensis, Ceratolejeunea filaria, Diplasiolejeunea cobrensis and Bazzania diversicuspis are new records for the state of Amazonas. These results reveal high species richness for Campinaranas and indicate the need for continued study in this underexplored Amazonian habitat. This study emphasizes the importance of carrying out floristic inventories in poorly known environments and of further studies with different approaches, such as ecological, phytogeographic and genetic efforts.

A checklist is a good base for gathering registers of biodiversity and supporting further studies. The aim of this paper is to present a checklist of the bryophytes from Amapá State, including the distribution data of the species. In total, 174 species (80 mosses and 94 liverworts) in 78 genera and 30 families are registered for Amapá State, northern Brazil, based on examined specimens and on a review of the literature. A table with the species, distribution data for all municipalities of Amapá State, and the first record for all species are presented.

Uma lista é uma boa base para reunir registros de biodiversidade e apoiar novos estudos. O objetivo deste artigo é apresentar uma lista de verificação das briófitas do Estado do Amapá, incluindo os dados de distribuição das espécies. No total, 174 espécies (80 musgos e 94 hepáticas) em 79 gêneros e 30 famílias são registradas no Estado do Amapá, norte do Brasil, com base em espécimes examinados e em uma revisão da literatura. Uma tabela com as espécies, dados de distribuição para todos os municípios do Estado do Amapá e o primeiro registro para todas as espécies são apresentados.

RESUMO Uma lista é uma boa base para reunir registros de biodiversidade e apoiar novos estudos. O objetivo deste artigo é apresentar uma lista de verificação das briófitas do Estado do Amapá, incluindo os dados de distribuição das espécies. No total, 174 espécies (80 musgos e 94 hepáticas) em 79 gêneros e 30 famílias são registradas no Estado do Amapá, norte do Brasil, com base em espécimes examinados e em uma revisão da literatura. Uma tabela com as espécies, dados de distribuição para todos os municípios do Estado do Amapá e o primeiro registro para todas as espécies são apresentados.

ABSTRACT A checklist is a good base for gathering registers of biodiversity and supporting further studies. The aim of this paper is to present a checklist of the bryophytes from Amapá State, including the distribution data of the species. In total, 174 species (80 mosses and 94 liverworts) in 78 genera and 30 families are registered for Amapá State, northern Brazil, based on examined specimens and on a review of the literature. A table with the species, distribution data for all municipalities of Amapá State, and the first record for all species are presented.

Resumo Neste trabalho apresentamos um inventário de Samambaias e Licófitas ocorrentes em remanescentes da Amazônia Maranhense. Os dados aqui presentes são resultados de coletas entre os anos de 2010-2011 e 2016-2019 em vários municípios do Maranhão inseridos nesta porção amazônica do estado. Registrou-se um total de 64 espécies de Samambaias e Licófitas, distribuídos em 36 gêneros e 18 famílias. Vinte e quatro espécies são novas ocorrências para o Maranhão, com 4 destas relatadas pela primeira vez para a região Nordeste do Brasil. A família mais representativa foi Pteridaceae (23 espécies), seguida por Polypodiaceae (7 espécies). As formas de vida predominantes foram terrícolas com 37 espécies e epífitas com 15 espécies, sendo este número de epífitas o maior registrado em um inventário de Samambaias e Licófitas do Maranhão. Estes dados reforçam a necessidade de coletas destes grupos de plantas na Amazônia Maranhense de forma a caracterizar amplamente a flora de Samambaias e Licófitas do Maranhão.

Abstract This work is an inventory of ferns and lycophytes of remnants in Amazônia Maranhense. The data provided are the results of collections made from 2010-2011 and 2016-2019 in various municipalities of Maranhão in the Amazonian part of the state. Sixty-four species of ferns and lycophytes, in 36 genera and 18 families, were recorded. Of these, 24 species are new records for Maranhão and four are new records for the Northeast Region of Brazil. The most representative family was Pteridaceae (23 species), followed by Polypodiaceae (7 species). The predominant life forms were terrestrial (37 species) and epiphytic (15 species); the latter is the highest number of epiphytic species recorded for a fern and lycophyte inventory in Maranhão. The data support the need for collecting ferns and lycophytes in Amazônia Maranhense to better understand the flora of these groups in the state.

Abstract The aim of this study is to investigate the richness and composition of the bryophytes of two Municipal Natural Parks in Amapá, eastern Amazon. Bryophytes were collected in the Arivaldo Gomes Barreto Municipal Natural Park (AGBMNP), Macapá municipality, and Cancão Municipal Natural Park (CMNP), Serra do Navio municipality, in October 2010 and October 2012, respectively. Ten plots of 10 x 10 m were established in each park for sampling, and, in addition, random collections were made, in order to maximize the knowledge on the local bryophyte flora. In total, 53 species were identified in AGBMNP, and 110 species in CMNP. The results shown a lower richness in AGBMNP than in CMNP, which may be related to the own size of each park, the level of conservation, and its localization. In terms of abundance, the neotropical pattern and the species locally rare were most representative in both parks, however, the floristic composition diverged. The AGBMNP is composed mostly by generalist species, while the CMNP by both generalists and shade specialists. The present study recorded 54% of the known bryophyte flora of Amapá, 63 new records for the state and, in addition, three new records for the North region of Brazil.

Resumo Os estudos botânicos na Serra dos Carajás iniciaram no final da década de 60. Após isso, foram publicados vários trabalhos sobre florística, ecologia e fitogeografia que resultaram em muitas descobertas sobre a flora local, culminando com a produção da flora das cangas da Serra dos Carajás. Este trabalho objetiva apresentar a riqueza das briófitas estudadas durante o projeto Flora das cangas da Serra dos Carajás, Pará, Brasil. O material estudado incluiu novas coletas realizadas de 2015 a 2017 e material depositado no Herbário MG. A canga apresentou uma grande riqueza de briófitas (54 musgos e 35 hepáticas) e a composição está de acordo com o esperado para áreas rupestres na Amazônia. A elevada riqueza de briófitas de sombra demonstrou que as poucas árvores da canga assim com as pequenas áreas de mata baixa que formam ilhas de vegetação ou ainda nichos específicos como frestas e base de rochas ou espaços sob rochas, servem como refúgio para essas espécies. O estudo das briófitas na Serra dos Carajás possibilitou o conhecimento 51 novos registros para as cangas de Carajás, sete para o Pará, três para a região Norte e um para o Brasil.

Abstract The Botanical studies in Serra dos Carajás initiated in the late 60’s. Thereafter, several papers on floristics, ecology and phytogeography were published, which resulted in many discoveries about the local flora, culminating in the production of the flora of the canga of the Serra dos Carajás. This work aims to present the richness of the bryophytes studied during the Flora of the canga of the Serra dos Carajás, Pará, Brazil. The studied material included new collections from 2015 to 2017 and specimens deposited in Herbarium MG. The canga presented a high bryophyte richness (54 mosses and 35 liverworts) and the composition was the expected for rupestrian areas in Amazonia. The high richness of shade specialists has shown that the few trees in the canga as well as the small areas of low forests forming vegetation islands or even specific niches such as cracks and base of rocks or spaces under rocks, serve as refuge for these species. The study of the bryophytes in the Serra dos Carajás made it possible to discover 51 new records for the canga of Carajás, seven for Pará, three for the North Brazilian region, and one for Brazil.

Resumo Duas espécies (Holomitrium arboreum e Leucoloma tortellum) de Dicranaceae foram registradas nas áreas de canga na Serra dos Carajás, no estado do Pará, para as quais é apresentada descrição, ilustração e comentários morfológicos.

Abstract Two species (Holomitrium arboreum e Leucoloma tortellum) of Dicranaceae were recorded in areas of canga in the Serra dos Carajás, Pará state, including description, illustration and morphologic comments.

Resumo Este é um tratamento taxonômico para 12 espécies de Calymperaceae registradas nas cangas da Serra dos Carajás, no estado do Pará, e inclui a descrição, ilustração e comentários morfológicos sobre os gêneros Calymperes (3 spp.), Octoblepharum (3 spp.) e Syrrhopodon (6 spp.).

Abstract This is a taxonomic treatment for 12 species of Calymperaceae recorded in the canga of the Serra dos Carajás, Pará state, and includes a description, illustrations and morphologic comments on the genera Calymperes (3 spp.), Octoblepharum (3 spp.), and Syrrhopodon (6 spp.).

Resumo Este é um tratamento taxonômico com descrição, ilustração e comentários morfológicos para as espécies de Lejeuneaceae das áreas de canga na Serra dos Carajás, estado do Pará. Foram identificados 12 gêneros e 22 espécies, sendo Lejeunea oligoclada é um novo registro para a região Norte do Brasil e Lejeunea angusta e Schiffneriolejeunea amazonica novos registros para o estado do Pará.

Abstract This is a taxonomic treatment with descriptions, illustrations and morphological comments for the Lejeuneaceae from areas of canga in the Serra dos Carajás, Pará state. Twelve genera and 22 species were identified, of which Lejeunea oligoclada is a new record for the northern region of Brazil, and Lejeunea angusta and Schiffneriolejeunea amazonica are newly recorded for the state of Pará.

Resumo Pylaisiadelphaceae está representada por quatro espécies dos gêneros Isopterygium (2 spp.), Pterogonidium (1 sp.) e Taxithelium (1 sp.) nas áreas de canga na Serra dos Carajás, no estado do Pará, para as quais são apresentadas descrições, ilustrações e comentários morfológicos.

Abstract Pylaisiadelphaceae is respresented by four species of the genera Isopterygium (2 spp.), Pterogonidium (1 sp.) and Taxithelium (1 sp.) in the canga areas of the Serra dos Carajás, Pará state, for which are presented descriptions, illustrations and morphological comments.

Resumo Este estudo apresenta um tratamento taxonômico com descrições, ilustrações e comentários morfológicos de Leucobryaceae das áreas de canga na Serra dos Carajás, estado do Pará, para onde foram identificados os gêneros Campylopus (5 spp.), Leucobryum (2 spp.) e Ochrobryum (1 spp.). Campylopus tallulensis é um novo registro para o Brasil e Campylopus heterostachys é citado pela primeira vez para o estado do Pará.

Abstract This study presents a taxonomic treatment with descriptions, illustrations, and morphological comments of Leucobryaceae in the areas of canga in the Serra dos Carajás, Pará state, where the genera Campylopus (5 spp.), Leucobryum (2 spp.), and Ochrobryum (1 spp.) were recorded. Campylopus tallulensis is a new record for Brazil and Campylopus heterostachys is newly referred for the state of Pará.

Resumo Este estudo reúne as espécies de Thuidiaceae registradas para as áreas de canga na Serra dos Carajás, no estado do Pará, incluindo descrição, ilustração e comentários morfológicos da espécie Pelekium scabrosulum, única registrada para a área de estudo.

Abstract This study presents the species of Thuidiaceae recorded for the areas of canga in the Serra dos Carajás, Pará state, including description, illustration and morphological comments on Pelekium scabrosulum, the only species recorded in the study area.

Resumo Este é um tratamento taxonômico para sete espécies de Sematophyllaceae registradas nas áreas de canga na Serra dos Carajás, no estado do Pará, e inclui descrições, ilustrações e comentários morfológicos sobre Brittonodoxa (1 sp.), Microcalpe (1 sp.), Trichosteleum (3 spp.) e Vitalia (2 spp.).

Abstract This is a taxonomic treatment for seven species of Sematophyllaceae recorded in the areas of canga in the Serra dos Carajás, Pará state, and includes descriptions, illustrations and morphologic comments on Brittonodoxa (1 sp.), Microcalpe (1 sp.), Trichosteleum (3 spp.), and Vitalia (2 spp.).