Rattail orchid
Rattail orchid is a term referring to several more or less closely related orchid species, which have inflorescences or aerial roots resembling a rat's tail in shape. It can refer to:
- Dendrobium mortii (Pencil orchid)
 - Dendrobium racemosum
 - Dendrobium striolatum (Streaked rock orchid)
 - Dendrobium tenuissimum
 - Dockrillia teretifolia (Bridal-veil orchid)
 - Oncidium cebolleta
 - Paraphalaenopsis labukensis