Plant collections The botanical garden includes a living collection of 10'000 species of 249 different families from around the world. The library of over 220'000 volumes. The living collection is divided into several sections: an arboretum, rock gardens and banks of protected plants, medicinal and useful plants, greenhouses, horticultural plants (including a "garden of scent and touch"). The garden also incorporates a
zoo dedicated to conservation and the
Botanicum (a family space) near the lake.
Herbarium The herbarium of the Geneva Botanic Garden comprises several collections. The open-access general herbarium, cited under the
Index Herbariorum code
G, contains over 6.35 million specimens of plants, fungi, oomycetes and myxomycetes from around the world. The focus of the collection lies on the Mediterranean, Middle East, South America, Africa, Madacascar, Switzerland and regional flora. The collection is notable for its high number of
type specimens, which are approximately 130'000 in total. Alongside the general herbarium, Geneva maintains several separate historical herbaria, including the Herbier de Candolle (G-DC), which contains material used for the
Prodrome and the
Monographiae Phanerogamarum, and the Herbier du
Flora Orientalis (G-BOIS), regrouped in the 1960s from specimens cited by
Edmond Boissier in the five volumes of the
Flora Orientalis. Other separate historical collections include the Burnat herbarium (G-BU) and the pre-Linnaean collection (G-PREL). Its heritage collections include pre-Linnaean and Linnaean works, periodicals, offprints, and reference works. The garden's archives preserve around 70'000 unique manuscript items documenting botanical research in Geneva and beyond, including scientific correspondence, manuscripts such as Augustin Pyramus de Candolle's
Prodrome, and iconographic material.
Seed bank Established in 1999, the seed bank of the Geneva Botanic Garden stores seeds of threatened Swiss flora, especially species from Geneva and the
Lake Geneva region. The collection has preserved more than 600 species, representing over 30% of the threatened flora of Switzerland and 57% of that of the canton of Geneva. Seeds are dried to about 5% moisture content and stored at −20 °C for long-term conservation and use in reintroduction and reinforcement projects. Together with the
University of Zurich, the garden operates a two-site Swiss National Seed Bank, and it also participates in wider seed-conservation networks, including the Alpine Seed Conservation and Research Network.
Publication The botanical garden produces
Candollea, (Organe du Conservatoire et du Jardin Botaniques de la Ville de Genève). An international peer-reviewed journal that publishes original scientific papers, preferably in English but also in French. Published since 1922, yearly since 1924. It is named after Augustin Pyramus de Candolle founder of the garden. ==National classification==