A major resource for Mesoamerica, and the initial focus of this project, is the Biologia Centrali-Americana. The text and plates are available here as navigable JPEG images, now accessible as the EBCA. This digital edition of the important and out-of-print work makes all 58 biological volumes available. Descriptions of over 50,000 and images of over 18,000 species of animals and plants are now accessible.
Part of the PLANTS Database, Fact Sheets & Plant Guides is a partnership of the National Plant Data Center and the Plant Materials Program. Fact Sheets provide brief descriptions of a plant, its uses, and cultural recommendations. Plant Guides are similar but more extensive. Fact Sheets and Plant Guides are available in either Adobe® Acrobat® Portable Document Format (pdf) or Microsoft Word (doc).
A flora is a comprehensive, systematic account of the plant species of a given area — in this case, North America north of Mexico. Flora of North America builds upon the cumulative wealth of information acquired since botanical studies began in the United States and Canada more than two centuries ago. Recent research has been integrated with historical studies, so that the Flora of North America is a single-source synthesis of North American floristics. FNA has the full support of scientific botanical societies and is the botanical community's vehicle for synthesizing and presenting this information.
This site, although geared at promoting their services that include analysis of plant material and soil for bacterial, fungal, viral, and nematode pathogens, includes several factsheets on a variety of plant diseases.
From the Department of Horticulture and Crop Science at Ohio State University, this site incorporates an Internet search engine, a searchable database of plant images, how-to videos, FAQs, and an illustrated glossary into one portal.
Use Plant Information Online to discover sources in 937 North American nurseries for 101613 plants, find 351491 citations to 134276 plants in science and garden literature, link to selected websites for images and regional information about 11878 plants, and access information on 2294 North American seed and nursery firms. Plant Information Online is a free service of the University of Minnesota Libraries.
This site was created by Scott Russell, a professor of botany at the University of Oklahoma, in February 1996. This site is a compilation of useful botany education resources for advanced high school (AP-biology) through collegiate and even research levels.
The Tree of Life Web Project is a collection of information about biodiversity compiled collaboratively by hundreds of expert and amateur contributors. Its goal is to contain a page with pictures, text, and other information for every species and for each group of organisms, living or extinct. Connections between Tree of Life web pages follow phylogenetic branching patterns between groups of organisms, so visitors can browse the hierarchy of life and learn about phylogeny and evolution as well as the characteristics of individual groups.