American Holly (Ilex Opaca) – Definition & Detailed Explanation – Tree Types Glossary

What is American Holly (Ilex Opaca)? American Holly, scientifically known as Ilex opaca, is a species of holly native to the eastern United States and southeastern Canada. It is a broadleaf evergreen tree that belongs to the Aquifoliaceae family. American Holly is known for its distinctive dark green, glossy leaves and bright red berries, making … Read more

Compound Leaf – Definition & Detailed Explanation – Identification and Classification Of Trees Glossary

What is a compound leaf? A compound leaf is a type of leaf in which the leaf blade is divided into multiple leaflets. These leaflets are attached to a single leaf stem, known as a rachis. Compound leaves are a common feature in many plant species, including trees, shrubs, and some types of vines. The … Read more

Photosynthetically Active Radiation (PAR) – Definition & Detailed Explanation – Phenology Glossary

What is Photosynthetically Active Radiation (PAR)? Photosynthetically Active Radiation (PAR) refers to the portion of the electromagnetic spectrum that plants use for photosynthesis. PAR ranges from 400 to 700 nanometers and is essential for plant growth and development. This type of radiation is absorbed by chlorophyll in plant cells and converted into energy through the … Read more

Cankerworms – Definition & Detailed Explanation – Tree Diseases and Pests Glossary

I. What are Cankerworms? Cankerworms are a type of caterpillar that belong to the family Geometridae. They are commonly found in North America and are known for their destructive feeding habits on trees. There are two species of cankerworms: spring cankerworms (Paleacrita vernata) and fall cankerworms (Alsophila pometaria). These caterpillars are small, measuring around 1 … Read more