The Department of Botany in the National Museum of Natural History is building a database of botanical illustrations curated by the department's scientific illustrator, Alice Tangerini. It is our hope that the scientific drawings included in this catalog will contribute to the understanding and appreciation of the plant species illustrated. Learn more...

The Biological Diversity of the Guiana Shield (BDG, formerly Biological Diversity of the Guianas) is a field-oriented program of the Department of Botany that has been operating since 1983. The goal of the BDG is to study, document and preserve the biological diversity of the Guiana Shield region. Learn more...

Algae are photosynthetic organisms that occur in most habitats. They vary from small, single-celled forms to complex multicellular forms, such as the giant kelps that grow to 65 meters in length.. The US Algal Collection is represented by almost 300,000 accessioned and inventoried herbarium specimens. Learn more...

Micronesia is a subregion in the Western Pacific Ocean comprising the Caroline, Mariana, Gilbert, and Marshall Islands. The name Micronesia, derived from the Greek for "small island", is highly appropriate since this region encompasses an area comparable in size to the continental United States or Australia, yet the total combined land area of the thousands of islands and atolls comprises only about 2,628 km², an area smaller than the US State of Rhode Island. Learn more...

The NMNH Plant DNA Barcode Project is exploring the development of new tools and applications for DNA barcoding. This website gives background and information on standard plant barcoding protocols used in these studies. Learn more...

The Smithsonian Institution, since the earliest days, has sent its researchers on expeditions to fulfill the mission of increasing and diffusing knowledge. These researchers usually relied on maps to plan and guide their quests. The catalog currently includes 18881 distinct maps covering 14225 subjects, with 13461 images available for viewing. Learn more...

The flora of the Washington (D.C.) -Baltimore Area is rich in number and diversity of species. Nearly 2,800 species of native and naturalized vascular plants (ferns and fern allies, conifers and flowering plants) have been catalogued in this region. Learn more...

Edward Palmer (1831-1911), often regarded as "the father of ethnobotany," gathered extensive natural history collections in North and South America during the late nineteenth century and established standards for plant collecting and reporting, particularly for plants useful to people. Learn more...

The West Indies are an archipelago with more than one thousand islands that separate the Atlantic Ocean from the Caribbean Sea and cover a distance of 2,700 km from Barbados to the most western tip of Cuba (Howard, 1973). This website presents a checklist of the currently accepted scientific names of seed plants from the West Indies, including synonomy and distribution by island. Learn more...

In the site a full checklist of Onagraceae is presented of all taxa within each of the 18 recognized genera as well as diagnostic images for as many taxa as possible. Learn more...

The mountains of southern Tibet (Xizang Autonomous Region) and its adjacent regions in China form the eastern extent of the Himalayan range. The Flower Guide of Tibet website presents some of the photos of plants a collaborative Smithsonian expedition team took during the three main expeditions in 2006, 2007 and 2009. Learn more...

The Smithsonian Institution has a long history of monographic and floristic work on the plant family Gesneriaceae, one of the largest families of the Lamiales as now circumscribed. The United States National Herbarium (US) has grown to have one of the largest and richest collections of Gesneriaceae in the world, with approximately 28,000 specimens and including about 1,000 types. Learn more...

Botanical Art

Biodiversity of the
Guiana Shield

Algae

Flora of Micronesia

DNA Barcode

Maps Catalog

Flora of the DC Area

Palmer Collections

Onagraceae

Tibetan Images

Gesneriaceae

Flora of the West Indies