PLANT FAMILY: Costaceae
BOTANICAL NAME: Costus giganteus
FORMAL SCIENTIFIC NAME: Costus giganteus Welw. ex Ridl.
This African species is recognized in Paul Maas' monograph on African Costaceae, published on 16 December 2016. (Monograph of African Costaceae, H. Maas-van de Kamer, P.J.M. Maas, J.J. Wieringa, C.D. Specht, Blumea 61, 2016: 280 - 318, http://www.ingentaconnect.com/content/nhn/blumea/2016/00000061/00000003/art00010)
Costus giganteus is assessed as Least Concern. The species has a restricted distribution range, as it occurs on SÃ£o Tome (Democratic Republic of SÃ£o Tome and PrÃncipe) and Annobon (Equatorial Guinea) Islands, but it is always recorded as very common in the wet mountains areas on the islands. On the basis of the present knowledge the threats are not significant enough to warrant a threatened category. Due to the limited distribution range the species should be monitored over a longer period of time to make sure that it doesn't fall into a threatened category, if the threats on the islands increase.
The African Plant Database lists this species, Known from SÃ£o Tome, PrÃncipe.
There was also a neotropical Costus giganteus described by O. Kuntz in 1891, but renamed to Costus kuntzei by Schumann in 1893. SeePID#6111 to read more details under Costus kuntzei.