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Inside the Botanical Garden of the University of Siena, built within the city walls 1856, the most representative environments of the spontaneous local flora have been recreated over the 7.4-acre area. Knowledge, conservation and protection of several endangered species are thus thoroughly promoted.
Among those species, there is a very interesting collection of spontaneous orchids, made of 25 species of the genera: Cephalanthera, Dactylorhiza, Himatoglossum, Listera, Limodorum, Ophrys, Orchis, Serapias, and Spiranthes.

Photo source: http://www.siena-agriturismo.it/siena_orto_botanico.

This post is also available in: Italiano (Italian)