Some 221 species of native orchids have been recorded in Singapore. Of these, however, ca. 170 orchid species are considered to be extinct, and only four are viewed as common. The orchid conservation program at the Singapore Botanic Gardens aims to monitor these species, to explore ways to conserve their germplasm, and to increase their number for subsequent reintroduction into appropriate habitats, including managed parks and roadsides. Thus far, we have successfully reintroduced Grammatophyllum speciosum, Bulbophyllum vaginatum, and Bulbophyllum membranaceum. Recently, we initiated the Orchid Cryo-Seed Bank Project, and have managed to successfully store seeds of four native species. They are Dendrobium crumenatum, Spathoglottis plicata, Bulbophyllum vaginatum, and Dendrobium anosmun.
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