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• Premise of the study: As currently circumscribed, Lastreopsis has about 45 species and occurs in Australia, southern Asia, Africa, Madagascar, and the neotropics. Previous molecular phylogenetic studies suggested that Lastreopsis is paraphyletic. Our study focuses on resolving relationships among the lastreopsid ferns (Lastreopsis, Megalastrum, and(More)
Recent molecular phylogenetic studies have shown that Lastreopsis is paraphyletic. Twenty-seven of its species belong to a separate clade for which the previously published generic name Parapolystichum is available. Parapolystichum is widely distributed, with four species in the Neotropics, six in Africa, nine in Madagascar, and eight in Australia and New(More)
UNLABELLED PREMISE OF THE STUDY The recognition of monophyletic genera for groups that have high levels of homoplastic morphological characters and/or conflicting results obtained by different studies can be difficult. Such is the case in the grammitid ferns, a clade within the Polypodiaceae. In this study, we aim to resolve relationships among four(More)
Polybotrya (Dryopteridaceae) is a genus of Neotropical endemic ferns that exhibits diverse growth forms and often plays important ecological roles in tropical forests. The genus is composed of about 35 species, yet the taxonomy of some groups of species in the genus is poorly understood. In this work we present the first detailed taxonomic treatment of(More)
We did a phylogenetic analysis on 21 of the 23 species of Stigmatopteris, a neotropical montane genus of wet forest floors. The analysis was based on four plastid markers: rbcL, rps4-trnS, trnG-trnR, and trnL-trnF. Two of the most closely related families to the Dryopteridaceae (Didymochlaenaceae and Hypodematiaceae) and 12 dryopteroid genera were used as(More)
The Guayana Shield is one of the oldest geological formations in South America, ranging from southern Colombia, Venezuela, and the Guianas to the extreme north of the Brazilian states of Amazonas and Roraima. Because of its ancient origin and isolation from other mountain ranges in South America, it harbors a rich flora with high levels of endemism. Recent(More)
Due to a production error, the following figures were incorrectly placed in the article and associated with the wrong captions: Fig. 5 should be the illustration that is shown in Fig. 8. Fig. 6 should be the illustration that is shown in Fig. 5. Fig. 7 should be the illustration that is shown in Fig. 6. Fig. 8 should be the illustration that is shown in(More)
Grammitid ferns are a well-supported clade of ~900 primarily tropical epiphytic species. Recent phylogenetic studies have found support for a distinctive, geographically diverse group of 24 species referred to as the Lellingeria myosuroides clade and have provided evidence for a variety of phylogenetic relationships within the group, as well as hypotheses(More)
PREMISE OF THE STUDY Comparative analyses of plastid genomes have suggested that gene order and content are relatively stable across the main groups of land plants, with significant changes rarely reported. We examine plastome organization and RNA editing in ferns and report changes that add valuable information on plastome evolution in land plants. (More)
Campyloneurum typically has simple and entire leaves; however, three of its species are 1-pinnate: C. decurrens, C. magnificum, and C. pentaphyllum. These three species form a clade that is sister to the rest of the genus. The 1-pinnate clade is here named as Campyloneurum subgen. Decurrentia. This paper provides a taxonomic revision of the three species,(More)