- Chamaecrista polystachya, Cassia polystachya
- Cheilolejeunea polystachya, Lejeunea polystachya;Potamolejeunea polystachya;Trachylejeunea polystachya
- Entada polystachya, Callingcard vine;Entadopsis polystachya;Mimosa polystachia;Mimosa bipinnata
- Entadopsis polystachya, Entada polystachya;Adenopodia polystachya
- Eysenhardtia orthocarpa, Tahitian kidneywood;Eysenhardtia polystachya
- Grevillea parallela, Silver Oak;Narrow leaf Beefwood;White Grevillea;Grevillea ceratophylla RBr;Grevillea refracta var ceratophylla RBr Benth;Grevillea polystachya RBr;Grevillea angustata RBr;Grevillea polystachya var hebestachya Benth;Grevillea polybotrya FMuell;Grevillea muelleriana HBuek;Grevillea heteroneura WFitzg;Grevillea polystachya RBr var polystachya
- Hylaeanthe polystachya, Myrosma polystachya
- Hyptis mutabilis, Tropical bushmint;Hyptis spicata;Mesosphaerum mutabile;Hyptis canescens;Hyptis micrantha;Hyptis polystachya;Hyptis mutabilis var canescens;Nepeta mutabilis;Tropical Bushmint
- Polystachya concreta, Greater yellowspike orchid;Polystachya flavescens;Onychium flavescens;Epidendrum concretum;Polystachya luteola;Yellow-Spike Polystachya
- Stryphnodendron polystachyum, Piptadenia polystachya;Piptadenia tocantina
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