The genus Chamaecostus was split out from Costus in 2006 (see Reclassification of Costaceae). These are South American plants, generally short in stature, with tubular, bicarinate bracteoles and relatively large labellums. Most of them grow in regions with a distinct dry season and have adapted thick tuberous roots for storage during a period of dormancy.
Until recently, they have not been well studied, and only two species are in general cultivation in gardens. Thiago André, of the Universidade Federal do Oeste do Pará (Brazil) has been working extensively with this group of plants and we can expect a few changes in the delineation of these species. |