The good folks at Texas A&M University's Extension Horticulture program have been maintaining this site since October 1994. Currently, over fifty teachers, scientists, and extension specialists work to keep this site...

AlgaeBase offers a free database of information on algae species around the world. This project is part of the Species 2000 initiative, created to enumerate "all known species of plants, animals, fungi and microbes on...

This collection of approximately 4,500 photographs documents natural environments, ecologies, and plant communities in the United States at the end of the nineteenth and the beginning of the twentieth century. Produced...

This page features an article describing the invasion of the green crab into New England waters. Learn all about this scallop-eating invasive species that is now spreading to the west coast. An excellent lesson on...

From the Missouri Botanical Gardens, this Web site provides a classification of angiosperms that can be navigated either by phylogenic tree, Order, or Family. A detailed description of the classification system is...