TABLE 2.

Genes and branches with selection events.

Evolutionary line	Species	Habitat altitude range	Genes shown as being under selection with aBSREL
I	Allium paradoxum	No data (lives in shady forests)	matK
	Allium macranthum	2,700–4,200	ndhF, rpl16, rpoC
	Allium kingdonii	4,500–5,000	ndhK
II	Allium neriniflorum	500–2,000	ndhF, rpoB
III	Allium strictum	No data (lives on open rocks)	ndhK
	Allium przewalskianum	2,000–4,800	ndhJ
	Allium forrestii	2,700–4,200	ndhF
	Allium oschaninii	3,000	ndhJ, rpoB
	Allium cyathophorum	2,700–4,600	ndhD, ndhJ