Cymbidium erythraeum Lindl. is an endangered species of Orchidaceae and distributed in China and Bhutan, India, Myanmar, Nepal, and Vietnam. Here, we report the complete chloroplast (cp) genome sequence and the cp genome features of C. erythraeum. The complete chloroplast (cp) genome sequence of C. erythraeum is 156,327 bp in length and including one large single-copy region (LSC, 85,404 bp), one small single-copy region (SSC, 20,021 bp), and two inverted repeat regions (IRs, 25,426 bp). The cp genome encoded 136 genes, of which 107 were unique genes (80 protein-coding genes, 23 tRNAs, and four rRNAs). The phylogenetic relationships show that C. erythraeum is closely related to other species in the genus Cymbidium and is sister with C. tracyanum.

Dendrobium harveyanum is an endangered species of Orchidaceae. Here we report the complete chloroplast (cp) genome sequence and the cp genome features of D. harveyanum. The complete cp genome sequence of D. harveyanum is 157,292 bp in length and presented a typical quadripartite structure including one large single-copy region (LSC, 86,583 bp), one small single-copy region (SSC, 19,449 bp), and two inverted repeat regions (IRs, 25,630 bp each). The cp genome encoded 138 genes, of which 120 were unique genes. The phylogenetic relationships show that D. harveyanum is closely related to other species in Dendrobium.

Bletilla guizhouensis (Coelogyninae, Epidendroideae, Orchidaceae), a new species from Guizhou, China, is described and illustrated in this study based on the morphological and molecular evidence. Based on the morphological comparison, B. guizhouensis is closely related to B. striata, but differs in having ovate-oblong floral bracts, oblong-elliptic dorsal sepal, lip broadly-obovate, lip mid-lobe subelliptic, and disk with 7 longitudinal lamellae. These features distinguish the new orchid from all other known species of Bletilla. Molecular analysis based on nuclear ribosomal ITS and plastid DNA sequence data indicate that B. guizhouensis is a new species.

Cymbidium changningense is an ornamental orchid and endemic specie in China. Here, we report the complete chloroplast (cp) genome sequence and the cp genome features of C. changningense. The cp genome was 155,388 bp in length with a typical quadripartite structure, which was comprised of one large single copy (LSC, 84,522 bp) region and one small single copy (SSC, 20,622 bp) region separated by two inverted repeat (IR, 25,122 bp) regions. The cp genome encoded 132 genes, of which 108 were unique genes (80 protein-coding genes, 24 tRNAs, and four rRNAs). The phylogenetic analysis showed that C. changningense was sister with C. erythraeum.

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