Two English oaks (Quercus robur), at different stages of development
Two black pines (Pinus nigra) with radically different root structures based on their location
This European beech (Fagus sylvatica), has a shallow root system typical of its species
A European ash (Fraxinus excelsior) with an early stage of development pictured beneath. Note how the younger ash has already put out extensive roots on its uphill side
The common juniper (Juniperus communis ssp. communis) can take a wide range of forms, from creeping groundcover to upright tree. This individual exhibits a more upright growth habit.
A European aspen (Populus tremula) growing on a slope. Note the basal shoots (“suckers”) sprouting from its root system