- Plants National Database
- www.plants.usda.gov
- Online USDA database of botanical information, images, and links on plants in the USA, including crops and invasives. Search by name, geographic distribution, or other characteristics.
4.5
(si*)
>2510
>30
7
- Plants For A Future
- www.pfaf.org
- Resource centre for rare and unusual plants, particularly those which have edible, medicinal or other uses. Offers a plant database, and various articles on gardening, perennials, and habitats.
4.2
(si*)
>950
>30
5
- CalFlora
- www.calflora.org
- Database containing summary geographic and ecological distribution information for over 8000 California vascular plant taxa, as well as additional habitat information for rare species of the Sierra Nevada.
4.1
(si*)
>460
<10
6
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