This page contains photos and description of a species, form or cultivar of Costaceae.

Gingersrus Database Taxon ID 4006

Costus longibracteolatus


OLD NAME: Costus longibracteolatus

NEW NAME: Costus longibracteolatus

NAME CHANGE NOTES:

FULL SCIENTIFIC NAME: Costus longibracteolatus Maas

STATUS : accepted

CONTINENT: Neotropical

FIELD OBSERVATIONS:(If field observations are available, you can click on the link to open in a new window.)
FIELD OBSERVATIONS

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GOOGLE PHOTO ALBUM

SYNONYMS:


BOTANICAL NOTES:
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.

HORTICULTURAL NOTES:
This species is in cultivation under two registered cultivar names, Costus 'Kiss of Death' and Costus 'Long Kiss' which were collected by Mark Collins. Based on information at the Botanic Gardens Conservation International (BGCI) this species is in ex situ cultivation at only 1 botanical garden world wide. It may be that some gardens are reporting this under one of the cultivar names.

ACCESSIONS:Click links (if any) to see details of individual collections. R2611- R3062- R3126- R3419- R3458- R3464-


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Photos (if available) of Taxon ID 4006
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Costus longibracteolatus, photo from Maas, a_ec_413.jpg - Click to see full sized image
Photo# 254 Accession# R0
Costus longibracteolatus, photo from Maas, a_ec_413.jpg


Costus longibracteolatus type specimen - Click to see full sized image
Photo# 504 Accession# R0
Costus longibracteolatus type specimen


Costus longibracteolatus, photo from Skinner R3458, from Putumayo, Colombia - Click to see full sized image
Photo# 255 Accession# R3458
Costus longibracteolatus, photo from Skinner R3458, from Putumayo, Colombia


Costus longibracteolatus, photo from Skinner R3464, from Putumayo, Colombia - Click to see full sized image
Photo# 256 Accession# R3464
Costus longibracteolatus, photo from Skinner R3464, from Putumayo, Colombia