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Huodendron tibeticum (J.Anthony) Rehder, which plays an important role in ecology and economy, is a deciduous species of Styracaceae. The authors sequenced, assembled, and annotated the chloroplast (cp) genome of Huodendron tibeticum using the sequencing data from Illumina Novaseq platform in this study. The complete cp genome of H. tibeticum is 159,320 bp in length, including a large single-copy (LSC) region of 87,795 bp, and a small single-copy (SSC) region of 18,989 bp. It contains 130 genes, including 37 tRNA genes, 8 rRNA genes, and 85 protein-coding genes. The overall GC content of H. tibeticum chloroplast genome is 36.66%. The phylogenetic analysis suggests that H. tibeticum is a sister species to H. biaristatum in Styracaceae.

Styrax chinensis Hu et S.Y. Liang, is one of the few evergreen species of Styracaceae with fragrant flowers. Here, we characterized the complete chloroplast (cp) genome of S. chinensis using next-generation sequencing. The circular complete cp genome of S. chinensis is 158,502 bp in length, containing a large single-copy (LSC) region of 87,817 bp, and a small single-copy (SSC) region of 18,001 bp. It comprises 132 genes, including 8 rRNA genes, 37 tRNAs genes, and 87 protein-coding genes. The GC content of S. chinensis cp genome is 36.93%. The phylogenetic analysis suggests that S. chinensis is a sister species to Styrax suberifolius in Styracaceae.

Ulmus lanceifolia, which plays an important role in ecology and economy, is one of the main evergreen broad leaved arbor species in southern China. In this study, we assembled its complete chloroplast genome. The total genome size of U. lanceifolia was 158,652bp, containing a large single-copy region of 87,119bp, a small single-copy region of 18,697bp, and a pair of inverted repeat regions of 26,418bp. The overall GC content of U. lanceifolia chloroplast genome is 35.63%. We obtained the 132 genes chloroplast genome, including 86 proteincoding genes, 8 rRNA genes, and 37 tRNA genes. The phylogenetic analysis suggests that U. lanceifolia is a monophyletic taxa and a transitional species between the 2 groups which were combined by Ulmus americana, U. elongate and Zelkova serrate, Z. schneideriana respectively in Ulmaceae.

Xylosma racemosa (Siebold & Zucc.) Miq. which plays an important role in ecology, medicine and economy, is a deciduous species of Salicaceae. In this paper, we sequenced, assembled, and annotated the chloroplast (cp) genome of X. racemosa (Siebold & Zucc.) Miq. by using the sequencing data from Illumina Novaseq platform. The complete cp genome of X. racemosa is 157,262 bp in length, containing a large single-copy (LSC) region of 84,289 bp, and a small single-copy (SSC) region of 17,817 bp. It contains 131 genes, including 8 rRNA genes, 37 tRNAs genes and 86 protein-coding genes. The GC content of X. racemosa cp genome is 36.74%. The phylogenetic analysis suggests that X. racemosa is a sister species to Xylosma congesta in Salicaceae.

Styrax agrestis (Lour.) G. Don, is a deciduous species of Styracaceae with beautiful shape, drooping flowers, and blooming like snow. Here, we characterized the complete chloroplast (cp) genome of S. agrestis using next generation sequencing. The circular complete cp genome of S. agrestis is 157,893 bp in length, containing a large single-copy (LSC) region of 87,512 bp, and a small single-copy (SSC) region of 18,285 bp. It comprises 136 genes, including eight rRNA genes, 37 tRNAs genes, 90 protein-coding genes, and one pseudo gene. The GC content of S. agrestis cp genome is 36.96%. The phylogenetic analysis suggests that S. agrestis is a sister species to Styrax faberi in Styracaceae.