PLANT FAMILY: Costaceae
BOTANICAL NAME: Costus sulfureus
FORMAL SCIENTIFIC NAME: Costus sulfureus K.Schum.
Asian Costus, may be an obsolete synonym, part of the "Costus globosus complex".
Dr. PJM Maas, in Notes on Asiatic and Australian Costoidae, Blumea 25 (1979) 543-549: Maas describes a "Costus globosus complex" - needs more study before it can be determined where the boundaries are between species. Characterized by inflo on separate, short, leafless shoot, bracts spiny at apex. Lists a whole series of plants in this complex: C acanthocephalus from Sumatra, C. chrysocephalus from New Guinea, C. clemensae from Philippines, C. dhanivatii from Thailand, C. globosus from Java, C. kingii and C. globosus var. kingii from Malay Peninsula, C. microcephalus from Borneo, C. oligophyllus and C. kunstleri from Maylay Peninsula, C. ridleyi and C. globosus var. ridleyi from Malay Peninsula and Thailand, C. sulfureus from Celebes, C. tonkinensis from Tonkin, C. velutinus and C. globosus var. velutinus from Malay Peninsula.
Schumann describes this species and places in subgenus Eucostus - Das Pflanzenreich IV, 1904.