@article {bhle_island_1996,
	title = {Island colonization and evolution of the insular woody habit in Echium L. (Boraginaceae)},
	volume = {93},
	number = {21},
	year = {1996},
	pages = {11740{\textendash}11745},
	author = {U.-R. B{\"o}hle and HH Hilger and Martin, W.F.}
}
