Table 2.

Specimens used for measurement of morphological characters of Carpinus polyneura and C. dayongina.

Species	Collector	Collection number	Collection site	Herbarium
C. polyneura	T. L. Dai	104469	Chengkou, Chongqing	PE
	H. F. Zhou	26421	Fengjie, Chongqing	KUN
	H. F. Zhou	26317	Fengjie, Chongqing	KUN
	Z. R. Zhang	25054	Fengjie, Chongqing	KUN
	Y. Liu	668	Shennongjia, Hubei	KUN
	P. C. Cai	20297	Shimen, Hunan	CSFI
	C. L. Long	87290	Shimen, Hunan	CSFI
	J. R. Zheng	80108	Shimen, Hunan	CSFI
	P. C. Cai	20442	Zhangjiajie, Hunan	CSFI
	P. Y. Li	8277	Langao, Shaanxi	KUN
	T. P. Soong	39145	Baoxing, Sichuan	KUN
	G. H. Yang	57149	Emeishan, Sichuan	KUN
	W. P. Fang	7546	Emeishan, Sichuan	PE
	W. P. Fang et al.	31110	Emeishan, Sichuan	IBK
	W. P. Fang et al.	32888	Emeishan, Sichuan	IBSC
	G. H. Yang	54569	Emeishan, Sichuan	IBSC
	S. G. Wu	394	Sichuan	KUN
	G. R. Chen	2383	Tiantai, Zhejiang	KUN
	Anonymous	2759	Without precise locality	KUN
	S. Y. Hu	1906	Without precise locality	KUN
C. dayongina	Y. T. Xiao	40700	Tianmenshan, Hunan	CSFI
	K.W. Liu	33359	Tianmenshan, Hunan	CSFI, PE
	Q. P. Zhang	2020072801	Tianmenshan, Hunan	NF
	Q. P. Zhang	2020072802	Tianmenshan, Hunan	NF