The complete chloroplast genome of Calyptothecium philippinense Broth. (Pterobryaceae, Hypnales).

The genus Calyptothecium, currently comprising ca. 30 species worldwide, is the largest genus within the family Pterobryaceae. However, a comprehensive taxonomic revision of this genus is lacking. Calyptothecium philippinense Broth. 1899, a moss species widely found in the tropical regions of Asia, is characterized by the unique rugose leaves and large auriculate leaf bases. In this study, we sequenced the complete chloroplast genome (CPG) of C. philippinense using the Illumina NovaSeq 6000 platform. The length of the CPG of C. philippinense was determined to be 124,513 bp, with an AT content of 74%. The CPG of C. philippinense exhibited a standard quadripartite structure, consisting of one small single-copy (SSC) region (18,541 bp), one large single-copy region (LSC) (87,222 bp), and two inverted repeat (IR) regions (9375 bp each). A total of 126 genes from the CPG of C. philippinense were annotated, including 82 protein-coding genes, eight ribosomal RNA genes, and 36 transfer RNA genes. Phylogenetic analysis based on the CPGs of 25 bryophyte taxa revealed that the three Pterobryaceae species C. philippinense, Calyptothecium hookeri (Mitt.) Broth. and Pterobryopsis orientalis (Müll. Hal.) M. Fleisch. formed a robust clade. The findings could facilitate more accurate classification and help elucidate evolutionary relationships within Calyptothecium.

The complete chloroplast genome of Calyptothecium hookeri (Pterobryaceae, Hypnales).

In this study, the complete chloroplast chloroplast genome of Calyptothecium hookeri was studied and reported. The size of the entire chloroplast genome was 124,401bp in length, comprising of two inverted repeats (IRa and IRb, 9371 bp respectively) separated by one large single copy (LSC: 87,126 bp) and one small single copy (SSC: 18,533 bp). The GC content of the genome sequence was 41.28%. A total of 126 functional genes were predicted, consisting of 82 protein-coding genes, 36 tRNA genes, and eight rRNA genes. Phylogenetic analysis showed that the two Pterobryaceae species C. hookeri and C. recurvulum clustered in one clade, which is sister to the Theliaceae species Myurella julacea.

Symphysodontella madhusoodananii (Pterobryaceae, Moss) a new species from the Western Ghats of India.

Symphysodontella madhusoodananii Manju & Rajesh, sp. nov. an epiphytic pendant moss, with flagellate branches and long acuminate leaves with two short costa is described and illustrated from the tropical wet evergreen forests of the Western Ghats of India.