Resources by W. John Hayden

Title Available As Summary Date ID Author
Virginia Master Naturalist, Basic Training Course, Botany
Plants can be defined as multicellular, photosynthetic organisms with reproductive structures that are more complex than single cells. By this definition, algae are not considered plants because they are either unicellular or their reproductive structures are essentially unicellular. Fungi, too, are excluded because they are not photosynthetic. At least 400 million years of diversification have resulted in a wide diversity of taxonomically distinct major groups of plants. Some of the most important groups of plants found in Virginia are described below.
Feb 6, 2014 ANR-10NP (ANR-97NP)
Virginia Master Naturalist, Basic Training Course, Botany (Introductory Version)
Plants can be defined as multicellular photosynthetic organisms with reproductive structures that are more complex than single cells. By this definition, algae are not considered plants because they are either unicellular or their reproductive structures are essentially unicellular, and fungi, too, are excluded because they are not photosynthetic.
Jan 31, 2014 ANR-12NP