Some plants are more likely to be found in certain places, because they are adapted to particular soil conditions or germinate well under certain circumstances, for instance. This can be a useful guide, though many plants are able to grow in a range of environments and soil conditions, so it’s not a hard-and-fast way of confirming species. With practise, you will come to know which plants you might expect to find in certain habitats and which plants you are likely to find together.
e.g. sanicle (Sanicula europaea) is usually found in broadleaved woodlands; hairy bittercress (Cardamine hirsuta) springs up where the ground has been disturbed; meadowsweet (Filipendula ulmaria) is found in damp places and beside water.
