Gingersrus Database Taxon ID 4006
OLD NAME: Costus longibracteolatus
NEW NAME: Costus longibracteolatus
NAME CHANGE NOTES:
FULL SCIENTIFIC NAME: Costus longibracteolatus Maas
STATUS : accepted
FIELD OBSERVATIONS:(If field observations are available, you can click on the link to open in a new window.)
PHOTOS:(If photos are available, you can click on the link to open in a new window.)
GOOGLE PHOTO ALBUM
Costus longibracteolatus is an accepted neotropical Costus species described by Paul Maas in 1972. Note that this specieswas originally spelled an "e" but Paul Maas has verified that it was corrected to be spelled with an "i" for proper Latin. The holotype is a collection by Asplund in Ecuador, Morona-Santiago near Macas in 1956.
Costus longibracteolatus is described as a basal flowering species growing to 2-6 meters tall with strigose to hirsute stems and ligule 10-30 mm long. There is no mention of the purplish coloration to the leaves as is found on the most commonly cultivated specimens known as 'Long Kiss' or as 'Kiss of Death'. The bracts are described as red or sometimes with a central zone green on the exposed part, red covered part, non-appendaged but having the apex slightly curved outwards. The species is especially characterized having a very long bracteole (32-42 mm - thus, the species name) and calyx (17-22 mm). In 1972 he did not have a good description of the flower but in 1977 he described it as being an open labellum type, white with wine-red venation on the outer lobes.
Costus longibracteolatus grows in areas east of the Andes with significant rainfall all year and flowers year round. The plants I have seen in southern Colombia and northern Ecuador have mostly red bracts but the plants farther east in the Amazon basin had mostly green bracts. The species seems to be extremely common from Putumayo, Colombia to Napo in Ecuador.
A preliminary phylogeny was completed by Eugenio Valderrama and his associates in the Chelsea Specht Lab at Cornell University and was published in the journal Frontiers in Plant Science in September 2022. Costus longibracteolatus has been sampled for DNA extraction and it is in a well supported clade close to another basal flowering species, Costus erythrocoryne.
Click on a thumbnail to load full sized image.
Use your "back" button to come back to this page.