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

Gingersrus Database Taxon ID 3603

Costus leucanthus


OLD NAME: Costus leucanthus

NEW NAME: Costus leucanthus

NAME CHANGE NOTES:

FULL SCIENTIFIC NAME: Costus leucanthus 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

PHOTOS:(If photos are available, you can click on the link to open in a new window.)
GOOGLE PHOTO ALBUM

SYNONYMS:


BOTANICAL NOTES:
Costus leucanthus is an accepted species of neotropical Costus first described in 1976 by Paul Maas from a collection in Colombia during his 1974 trip there with Tim Plowman. It is a tall plant that is easilly distinguishable, especially in flower, but also has unique-looking ligules, 55-70 mm long, very deeply lobed and acutely triangular in shape. It flowers terminally with red bracts that are hidden by the long, triangular shaped foliaceus green appendages. The flowers are nearly pure white with no red stripes, but only a pale yellow throat to the labellum. The corolla lobes are open, away from the labellum and the overall look of the flower is quite different from other Costus species.

Costus leucanthus grows in western Colombia and Ecuador in areas with significant rainfall, indistinct dry season, and can flower year round.

A partial 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. DNA has been extracted from a sample collected by Paul Maas near the type locality and this sample showed up in a clade with other Maas collections of C. geothyrsus and C. cordatus - two species that look nothing at all like Costus leucanthus.

HORTICULTURAL NOTES:
Based on information at the Botanic Gardens Conservation International (BGCI) this species is in ex situ cultivation at 9 botanical gardens world wide. I have found this species to be relatively easy to grow in my garden and greenhouses at Le Jardín Ombrage.

ACCESSIONS:Click links (if any) to see details of individual collections. R3011- R3199-


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Photos (if available) of Taxon ID 3603
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Costus leucanthus, photo from Maas, BB 2014 PM DSC_0023.jpg - Click to see full sized image
Photo# 246 Accession# R0
Costus leucanthus, photo from Maas, BB 2014 PM DSC_0023.jpg


Costus leucanthus, photo from Maas,  CS BB DSCN1238.jpg - Click to see full sized image
Photo# 247 Accession# R0
Costus leucanthus, photo from Maas, CS BB DSCN1238.jpg


Costus leucanthus, photo from Maas 1920 COL U0999376.jpg - Click to see full sized image
Photo# 248 Accession# R0
Costus leucanthus, photo from Maas 1920 COL U0999376.jpg


Costus leucanthus, photo from Maas 1920 COL U0999377.jpg - Click to see full sized image
Photo# 249 Accession# R0
Costus leucanthus, photo from Maas 1920 COL U0999377.jpg


Costus leucanthus type specimen - Click to see full sized image
Photo# 502 Accession# R0
Costus leucanthus type specimen


Costus leucanthus, photo from Skinner R3011, at Waimea Gardens, Hawaii - Click to see full sized image
Photo# 250 Accession# R3011
Costus leucanthus, photo from Skinner R3011, at Waimea Gardens, Hawaii