Biology

Science, Biology, Flora and Fauna, Plantae - American Paulownia Association. Promotes the advancement of Paulownia as a forest crop in the United States.

A non-partisan information clearinghouse for Paulownia producers and consumers of Paulownia

Science, Biology, Flora and Fauna, Plantae - Cacti Guide. Images of many genera, mostly of small, planted specimens.

Science, Biology, Flora and Fauna, Plantae - Cactus Museum. Photos and notes for many species from a cactus grower in Tucson, Arizona.

Science, Biology, Flora and Fauna, Plantae - Peperomia.net. Detailed information, photos, and horticulture of Peperomia species.

Science, Biology, Flora and Fauna, Plantae - American Begonia Society. Includes a collection of images and descriptions.

Science, Biology, Flora and Fauna, Plantae - University of Nijmegen: Botanical and Experimental Garden. Holds the Dutch national collection of plants in the Solanaceae family.

Science, Biology, Flora and Fauna, Plantae - Crassulaceae.com. Botanical database and photo gallery of the American Crassulaceae.

Science, Biology, Flora and Fauna, Plantae - Gymnosperm Database. Basic information (sometimes only a name) for all species and higher-ranked taxa of the gymnosperms, including conifers, cycads, and their allies.

Science, Biology, Flora and Fauna, Plantae - Wollemi Pine. Facts, photos, and news about the Wollemia.

Science, Biology, Flora and Fauna, Monera - Archaea. Microbiological journal devoted to original research on the Archaea.

Cyanosite, a general webserver for cyanobacterial research.