Botany & Plant Biology

This site includes free instructional materials and reliable peer-reviewed publications including the open-access journal The Plant Health Instructor.

A collection of approximately 800 images available for instructional use.

Database of sensitive plants, conservation efforts, organizations, contacts and images.

Includes searchable herbarium collections from in and around the Great Lakes drainage basin.

The definitive work on plants of North America.

IPNI records come from three sources: the Index Kewensis (IK), the Gray Card Index (GCI) and the Australian Plant Names Index (APNI). The about page summarizes basic information about each data source and the procedures followed in merging the records so that the user can understand the origin and the limitations of the combined dataset.

Includes a database where you can search 7,008 native plant records by traits or names, and an Image Gallery where you can browse through a collection of 23,457 native plant images.

Provides standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories.

Contains 1,700 digital micrographs from hundreds of stems, leaves, roots, flowers, buds and seeds of tropical plants. Browse the images or search by order, family, structure, country of origin.

A complete count of U.S. agricultural data, including state and county profiles covering demographics and crop production