A definition of a bract
Definition of bulbs
A description and definition of compound leaves in plants
A definition and description of simple leaves on plants
What is a keiki?
Pine Bark Fines
What are pine bark fines?
A definition of spadix in relation to plants
Definition and description of perlite, including medical warnings.
A definition of spathe
Sphagnum Peat Moss
A description of sphagnum peat moss.
A definition and description of variegated plant leaves
Glossary of Gardening Terms
About.com's glossary of gardening and plant-related terms.
Ever wondered what a palmate leaf is exactly? Pima College provides a quick primer on terms biologists use to describe plant shapes and forms.
A more advanced discussion of plant biology, from Ohio State University, including classification of different kinds of plants and plant chemistry.
Tropical Plant Glossary
From the University of Hawaii, a glossary of terms and problems that affect tropical plants. Most houseplants are tropical, and although this glossary is aimed at outdoor growers, these same principles still frequently affect indoor gardeners.
A Glossary of Orchid Terms
Ever wondered what a keiki is? Orchids sometimes seem to come with their own vocabulary. Here is a comprehensive list of terms associated with orchid growing, from Orchidmania.
Understanding Plant Names—Binomial Nomenclature Explained
A simple guide to understanding Latin plant names, including a discussion on hybrids and cultivars