TABLE 1.

Taxa, vouchers/references, and GenBank accession numbers used in phylogenetic analyses.

Family	Species	Subgenus	Voucher/references	GenBank accession
Papaveraceae	C. adunca Maxim.	Cremnocapnos	Maoxian, Sichuan, Wang et al., 200008	MT920559
	C. saxicola Bunting	Sophorocapnos	Zigui, Hubei, Wang et al., 160219	MT920562
	C. hsiaowutaishanensis T. P. Wang	Corydalis	Diebu, Gansu, Wang et al., 140388	MT920561
	C. davidii Franch.	Corydalis	Baoxing, Sichuan, Wang et al., 140275	MT920560
	C. inopinata Prain ex Fedde	Corydalis	Langkazi, Xizang, Wang et al., 140599	MT755641
	C. conspersa Maxim.	Corydalis	Wu et al., 2020	NC_047208
	L. spectabilis (L.) Fukuhara	–	Park et al., 2018	NC_039756
	Chelidonium majus L.	–	Shi et al., 2019	NC_046829
	Coreanomecon hylomeconoides Nakai	–	Kim and Kim, 2016	NC_031446
	Hylomecon japonica (Thunb.) Prantl and Kündig	–	Zhang et al., 2019	NC_045388
	Macleaya microcarpa (Maxim.) Fedde	–	Zeng et al., 2018	NC_039623
	Meconopsis racemosa Maxim.	–	Zeng et al., 2018	NC_039625
	Papaver somniferum L.	–	Sun et al., 2016	NC_029434
Circaeasteraceae	K. uniflora Balf. f. et W. W. Smith	–	Sun et al., 2017	NC_035873
Lardizabalaceae	Akebia quinata (Thunb. ex Houtt.) Decne.	–	Li et al., 2016	NC_033913
Menispermaceae	Stephania japonica (Thunb.) Miers	–	Sun et al., 2016	NC_029432
Ranunculaceae	Glaucidium palmatum Siebold and Zucc.	–	Zhai et al., 2019	NC_041539
	Ranunculus cantoniensis DC.	–	Li et al., 2019	NC_045920
Berberidaceae	Mahonia bealei (Fortune) Carrière	–	Ma et al., 2013	NC_022457
	Nandina domestica Thunb.	–	Moore et al., 2006	NC_008336
Eupteleaceae	E. pleiosperma Hook. f. et Thoms.	–	Sun et al., 2016	NC_029429

Species in bold are newly sequenced.