Mathias Erich Engels

×Cyclobotrya: A new hybrid genus between Cyclodium and Polybotrya (Dryopteridaceae) from the Brazilian Amazon

Abstract×Cyclobotrya telespirensis, a new hybrid and new hybrid fern genus, is described from the margin of the Teles Pires River in southern Brazilian Amazon. The new nothotaxon is derived from the cross between Polybotrya goyazensis and Cyclodium meniscioides var. meniscioides. This is the first report of hybridization between Cyclodium and Polybotrya. It represents a rare instance of an intergeneric hybrid in ferns. We present illustrations, a description, and taxonomic and ecologic comments of the new nothotaxon.Resumo×Cyclobotrya telespirensis, um novo híbrido e novo gênero híbrido são descritos, originário das margens do rio Teles Pires, no sudeste da Amazônia brasileira. O novo nototáxon é derivado do cruzamento entre Polybotrya goyazensis e Cyclodium meniscioides var. meniscioides. Este é o primeiro registro de hibridização entre os gêneros Cyclodium e Polybotrya e um raro caso de hibridização intergenérica em samambaias. São apresentados ilustrações, descrição e comentários taxonômicos e ecológicos a respeito do novo nototáxon.

Vanilla appendiculata (Orchidaceae): primeiro registro para o estado do Mato Grosso, Brasil

E apresentado o primeiro registro de Vanilla appendiculata para o estado do Mato Grosso, sendo este o limite sul de distribuicao da especie. Sao apresentadas a descricao, comentarios taxonomicos e ecologicos, mapa de localizacao, e uma prancha fotografica da especie estudada.

Thismia singeri (Thismiaceae), an augmented description and first record for Brazil

Thismia singeri, is described for the first time for Brazil, being the first record of this family for Pará State and the third record for this rare species in nature. In Pará state, northern Brazil, this species was found growing in Itaituba municipality near the River Tapajós, in a well preserved submontane rain forest with a dense canopy. Due to the holotype is incomplete, we provide a more comprehensive description for this species based on complete individuals, thus clarifying some aspects of its morphology such as the parietal placenta, the root system, and tepal morphology. This is the second species of Thismiaceae described for Amazonia. Thismia hyalina, the other Amazonian species, is easily distinguished from T. singeri by its tubers, leaves inserted just below the flower, the latter with two tepal whorls, the upper one clawed, reniform and erect, and the lower one linear triangular.

An illustrated guide of ferns and lycophytes from Carambeí, PR, Brazil

We present a list of species of ferns and lycophytes from Carambeí, a municipality located in Paraná state, southern Brazil. This area, locally known as “Campos Gerais”, presents an intricate mosaic of forests and savannah with several canyons and humid valleys that harbors a rich and unique vegetation in Southern Brazil. In total, we found 129 species (119 ferns and 10 lycophytes), distributed in 18 families and 59 genera, and 20% (26 spp.) of which are endemic to Brazil. The most expressive families were Polypodiaceae (19 spp.), Pteridaceae (18 spp.) and Thelypteridaceae (15 spp.). The most representative genera were Asplenium (8 spp. 6.2%) and Amauropelta (8 spp 6.2%). Terrestrial herbs, epiphytes and lithophytes are the most common guild of life forms, successively. The richest environments were woody forest (61% of the species) and herbaceous-shrubby (12%). Arachniodes denticulata, Phlegmariurus flexibilis and P. heterocarpon are the second record in the “Campos Gerais” region. We also provide photographic plates with diagnostic characters for most of the species.

Heteropsis reticulata (Araceae): complementação da descrição e novo registro para o estado do Mato Grosso, Brasil

During the flora rescue of Hydroelectric Power Plant of Colíder, material of Heteropsis reticulata was collected in all phenological phases, it allow us to increase knowledge of this species, until now it was known just by the type herborized material. This is also a new record of geographical distribution to Central-West region in the Mato Grosso state.

A subtribo Goodyerinae (Orchidaceae: Orchidoideae) no estado do Paraná, Brasil

The subtribe Goodyerinae comprises 32 genera and 744 species, occurring in both New and Old World. It is represented in the New World by three native genera, two of which occur in Brazil: Aspidogyne and Microchilus. In Parana State, the reports indicated the occurence of these two genera, with a total of 16 native species. Was also recorded the occurrence of Zeuxine strateumatica, exotic invasive species of Asiatic origin. Three species are considered critically endangered (CR), seven are endangered (EN), three are vulnerable (VU) and three are not considered at risk of extinction (LC). Aspidogyne schlechteriana is synonymized under A. bidentifera and A. serripetala is restabliched with autonomous taxon. An artificial key to the species is presented, as well as morphological descriptions, comments, conservation status, and illustrations of the taxa studied.

O gênero Catasetum Rich. ex Kunth (Orchidaceae, Catasetinae) no Estado do Paraná, Brasil

Catasetum possui cerca de 170 especies terricolas e epifitas com distribuicao neotropical, sendo o genero reconhecido pelos pseudobulbos possuindo varios entrenos, pelas flores unissexuais (raro hermafroditas) e polinario com estipe, caudiculo e viscidio. O objetivo deste trabalho foi realizar o estudo taxonomico de Catasetum no Estado do Parana, apresentando descricoes, ilustracoes, mapa de distribuicao, chave de identificacao, status de conservacao e comentarios para cada especie. O genero esta presente predominantemente na Floresta Ombrofila Densa (Catasetum atratum, C. socco e C. triodon) e na Floresta Ombrofila Mista (C. fimbriatum) do Estado. De acordo com os criterios da IUCN, C. atratum enquadra-se como especie criticamente em perigo, C. fimbriatum e C. triodon, enquadram-se como uma especie em perigo e C. socco enquadra-se como especie vulneravel no Estado do Parana.