Widespread incongruence in the phylogenomics of the ancient land plant lineage, Selaginellaceae (lycophytes).

The advent of high-throughput genomic sequencing has provided unprecedented access to genome-scale data. This deluge of data has yielded new insights into phylogenetic relationships across the tree of life. However, incongruent results arising from different data partitions or from the use of different analyses have often been overlooked or insufficiently explored.

 (Crassulaceae), a new species from China.

Based on a comprehensive morphological and molecular data analysis, we have confirmed and described a new species within the genus , which is distributed in Sichuan Province, China. Morphologically, the new species resembles and , but it is distinctly different from them in its asymmetrical leaves, leaf apex with glands, triangular petals that are white at the base and adorned with dense purple-red stripes and spots on the surfaces upward, and rectangular nectar scales. A phylogenetic analysis utilizing four plastid markers and one nuclear marker supports the conclusion that the new species is sister to .

Phylogenetic Inferences and Historical Biogeography of Onocleaceae.

The family Onocleaceae represents a small family of terrestrial ferns, with four genera and around five species. It has a circumboreal to north temperate distribution, and exhibits a disjunct distribution between Eurasia and North America, including Mexico. Historically, the taxonomy and classification of this family has been subject to debate and contention among scholars, leading to contradictory classifications and disagreements on the number of genera and species within the family.

Phylogenomics of Paragymnopteris (Cheilanthoideae, Pteridaceae): Insights from plastome, mitochondrial, and nuclear datasets.

Previous studies have shown that at least six genera of the Cheilanthoideae, a subfamily of the fern family Pteridaceae, may not be monophyletic. In these non-monophyletic genera, the Old-World genus Paragymnopteris including approximately five species have long been controversial. In this study, with an extensive taxon sampling of Paragymnopteris, we assembled 19 complete plastomes of all recognized Paragymnopteris species, plastomes of Pellaea (3 species) and Argyrochosma (1 species), as well as transcriptomes from Paragymnopteris (6 species) and Argyrochosma (1 species).

Deciphering the evolution and biogeography of ant-ferns Lecanopteris s.s.

Southeast Asia is a biodiversity hotspot characterized by a complex paleogeography, and its Polypodiopsida flora is particularly diverse. While hybridization is recognized as common in ferns, further research is needed to investigate the relationship between hybridization events and fern diversity. Lecanopteris s.

Phylogenomic data resolved the deep relationships of Gymnogynoideae (Selaginellaceae).

The unresolved phylogenetic framework within the Selaginellaceae subfamily Gymnogynoideae (ca. 130 species) has hindered our comprehension of the diversification and evolution of Selaginellaceae, one of the most important lineages in land plant evolution. Here, based on plastid and nuclear data extracted from genomic sequencing of more than 90% species of all genera except two in Gymnogynoideae, a phylogenomic study focusing on the contentious relationships among the genera in Gymnogynoideae was conducted.

 (subg. , Selaginellaceae), a new spikemoss species from China based on morphological and molecular data.

A new species of spikemoss, in S.subg.Heterostachyssect.

Plastome structure, evolution, and phylogeny of Selaginella.

As one of the earliest land plant lineages, Selaginella is important for studying land plant evolution. It is the largest genus of lycophytes containing 700-800 species. Some unique characters of Selaginella plastomes have been reported, but based only on 20 species.

The complete chloroplast genome of Endangered species Franch. (Aristolochiaceae) in Southwestern China.

The complete chloroplast genome of was determined in this study. The chloroplast genome consists of 160,344 bp, with a typical circular structure including a pair of inverted repeats of 25,454 bp separated by a large single-copy region and a small single-copy region of 89,502 and 19,795 bp, respectively. The plastome contains 130 genes, including 85 protein-coding genes, eight rRNA genes, and 37 tRNA genes.

[Cadmium Accumulation Characteristics of Four Herbs].

A pot-based experiment was conducted to study the Cd tolerance and accumulation characteristics of four invasive herbs (, and ) under exposures of 0 (T0), 5 (T5), 25 (T25), and 50 mg·kg (T50) soil Cd concentrations to screen for potential Cd accumulators for phytoremediation. The results showed that the biomasses of both shoots and roots of had no significant changes compared to the control (T0) samples under all Cd treatments, whereas the biomass of the other three Poaceae species significantly decreased under the T25 or T50 treatment. The results indicate that had stronger Cd tolerance than the other three species.

A large-scale phylogeny of the lycophyte genus Selaginella (Selaginellaceae: Lycopodiopsida) based on plastid and nuclear loci.

The lycophyte genus Selaginella alone constitutes the family Selaginellaceae, the largest of the lycophyte families. The genus is estimated to contain 700-800 species distributed on all continents except Antarctica, with highest species diversity in tropical and subtropical regions. The monophyly of Selaginella in this broad sense has rarely been doubted, whereas its intrageneric classification has been notoriously contentious.