NATURESERVE EXPLORER - An Online Encyclopedia of Life

Gray Herbarium Card Index Harvard Herbarium; New World taxa; synonyms for correct names

W³TROPICOS- Missouri Botanical Garden vascular tropicos nomenclatural database and associated authority files

PLANTS: USDA-NRCS; Database of North American plants

Synonymized Checklist of the Vascular Flora of the United States, Canada and Greenland - BONAP & Museum Informatics Project, University of California, Berkeley

A Synonymized Checklist of the Vascular Flora of the United States, Puerto Rico, and the Virgin Islands Full text Index - July 1998 - BONAP & TAMU-BWG

Global Plant Checklist : International Organization for Plant Information (IOPI) Query the checklist

World Biodiversity Database ETI-Expert Center for Taxonomic Identification

BABEL - A Multi-lingual Database for the Vernacular Names of European Wild Plants

Authors of Plant Names Royal Botanic Gardens KEW

Botanical Authors Database Harvard Herbarium

Names in Current Use for Extant Plant Genera

Find Genera within a Family, Kew Gardens

Indices Nominum Supragenericorum Plantarum Vascularium

Index Nomimum Genericorum Plantarum Families and Genera of Spermatophytes Recognized by the US Agricultural Research Service

Families and Genera in GRIN USDA

Checklist of Names for 3,000 Vascular Plants of Economic Importance

Catalog of New World Grasses (Poaceae)

Grass names for the future Manual of North American Grasses - DRAFT LIST

World Grass Species Database Royal Botanic Gardens, Kew

Woods of the World Forestworld

LegumeWeb

Texas A & M Bioinformatics Working Group Vascular Plant Family Finder

FLORA EUROPEAE Royal Botanical Gardens Edinburgh

Back to the Beginning of Charlie's Mid-Atlantic Plant Identification Guide