Table 1. Comparison of the chloroplast genome organization among six Betulaceae species.

Taxon	Size (bp)	LSC (bp)	SSC (bp)	IR (bp)	Total genes	Protein coding genes	tRNA genes	rRNA genes	GC content (%)
Ostryopsis davidiana	159,286	88,568	18,588	26,065	131 (18)	86 (7)	37 (7)	8 (4)	36.39
Alnus cremastogyne	160,538	89,074	19,094	26,185	131 (18)	86 (7)	37 (7)	8 (4)	36.68
Corylus wangii	159,825	88,743	18,870	26,106	131 (18)	86 (7)	37 (7)	8 (4)	36.52
Carpinustientaiensis	160,104	89,446	18,598	26,030	131 (18)	86 (7)	37 (7)	8 (4)	36.38
Betula nana	160,579	89,493	19,018	26,034	131 (18)	86 (7)	37 (7)	8 (4)	36.07
Ostrya rehderiana	159,347	88,552	18,941	25,927	131 (18)	86 (7)	37 (7)	8 (4)	36.46