Native and non-native. The felling of a dead tree has let in more light resulting in an eruption of Garlic Mustard (Alliaria petiolata) and Green Alkanet (Pentaglottis sempervirens). The former is native, the latter not. 

 There is a certain amount of angst about 'foreign' invasive species but many of our natives are equally opportunistic. And don't they look good together?