Plagiostachys crocydocalyx is a monocotyledonous plant species first described by Karl Moritz Schumann, and given its current name by Brian Laurence Burtt and Rosemary Margaret Smith. Plagiostachys crocydocalyx is part of the genus Plagiostachys and the family Zingiberaceae. No subspecies are listed in the Catalog of Life.
References B.L.Burtt & R.M Sm., 1972 In: Notes Roy. Bot. Gard. Edinburgh 31: 315 WCSP: World Checklist of Selected Plant Families