Broad Leaf vs Needles vs Scale-like Leaves
This week in our plant identification series we are covering the different types of leaf structures that plants can have. Many of these leaf structures were developed due to help plants survive specific environmental conditions (needles and scales are more common in hot and dry locations while broadleaves tend to occur in locations with more moisture and moderate temperatures.)
- Broad leaf- a tree or plant with wide, flat leaves. This group mostly includes deciduous plants (ones that lose their leaves every year) however there are some exceptions such as hollies, viburnums and boxwood. As was discussed last week the type of leaf and the shape can be used as an identification technique.
- Needles- a tree or plant that has leaves shaped like needles. These are common on evergreen plants however there are some deciduous plants with needles (Bald cypress for example). Needles can be found individually (ex. Spruce trees) or in bundles of two or more (ex. Pine trees). The number of needles in a bundle and their length can be used as a plant identification technique for telling pine trees apart.
- Scale-like leaves- small, flat, overlapping structures that store food and water. They are found on evergreen plants that do not drop their leaves. Plants that have scale like leaves include Juniperus, Thuja (Arborvitae) and Chamaecyparis or White Cedar.
