Definition that contains acid soil
- celandine North American annual plant with usually yellow or orange flowers; grows chiefly on wet rather acid soil
- arctium minus a plant that is ubiquitous in all but very acid soil; found in most of Europe and North Africa
- lesser burdock a plant that is ubiquitous in all but very acid soil; found in most of Europe and North Africa
- jewelweed North American annual plant with usually yellow or orange flowers; grows chiefly on wet rather acid soil
- common burdock a plant that is ubiquitous in all but very acid soil; found in most of Europe and North Africa
- orange balsam North American annual plant with usually yellow or orange flowers; grows chiefly on wet rather acid soil
- pillwort European water fern found around margins of bodies of water or in wet acid soil having small globose sporocarps
- impatiens capensis North American annual plant with usually yellow or orange flowers; grows chiefly on wet rather acid soil
- calcifugous growing or living in acid soil
- pilularia globulifera European water fern found around margins of bodies of water or in wet acid soil having small globose sporocarps