Erythrorchis, commonly known as bootlace orchids or as 倒吊兰属 (dao diao lan shu), is a genus of two species of climbing, leafless orchids in the family Orchidaceae. Orchids in this genus are climbing or scrambling vines that cling by small roots, usually climbing on tree trunks. Many-branched flowering stems bear many densely crowded flowers.

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