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Datasheet for Costus malortieanus

Plant Datasheet for Costus malortieanus

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Costus malortieanus  at Poco Sol, Costa Rica  - Click to see full sized image
Photo# 12418 Accession# R0
Costus malortieanus at Poco Sol, Costa Rica


Costus malortieanus  at Poco Sol, Costa Rica  - Click to see full sized image
Photo# 12419 Accession# R0
Costus malortieanus at Poco Sol, Costa Rica


Costus malortieanus  at Poco Sol, Costa Rica  - Click to see full sized image
Photo# 12420 Accession# R0
Costus malortieanus at Poco Sol, Costa Rica


Costus malortieanus  at Poco Sol, Costa Rica  - Click to see full sized image
Photo# 12421 Accession# R0
Costus malortieanus at Poco Sol, Costa Rica


Costus malortieanus at Lyon Arboretum, Oahu, Hawaii  - Click to see full sized image
Photo# 12703 Accession# R0
Costus malortieanus at Lyon Arboretum, Oahu, Hawaii


Costus malortieanus at Lyon Arboretum, Oahu, Hawaii  - Click to see full sized image
Photo# 12704 Accession# R0
Costus malortieanus at Lyon Arboretum, Oahu, Hawaii


Costus malortieanus at PN Tenorio area of Costa Rica - Click to see full sized image
Photo# 16679 Accession# R0
Costus malortieanus at PN Tenorio area of Costa Rica


Costus malortieanus at PN Tenorio area of Costa Rica - Click to see full sized image
Photo# 16680 Accession# R0
Costus malortieanus at PN Tenorio area of Costa Rica


Costus malortieanus at PN Tenorio area of Costa Rica - Click to see full sized image
Photo# 16681 Accession# R0
Costus malortieanus at PN Tenorio area of Costa Rica


Costus malortieanus at PN Tenorio area of Costa Rica - Click to see full sized image
Photo# 16682 Accession# R0
Costus malortieanus at PN Tenorio area of Costa Rica


Costus malortieanus at PN Tenorio area of Costa Rica - Click to see full sized image
Photo# 16683 Accession# R0
Costus malortieanus at PN Tenorio area of Costa Rica


Costus malortieanus at Rara Avis, Costa Rica - Click to see full sized image
Photo# 16684 Accession# R0
Costus malortieanus at Rara Avis, Costa Rica


Costus malortieanus at La Selva, Costa Rica - Click to see full sized image
Photo# 16685 Accession# R0
Costus malortieanus at La Selva, Costa Rica


Costus malortieanus - Click to see full sized image
Photo# 11238 Accession# R1562
Costus malortieanus


Costus malortieanus - Click to see full sized image
Photo# 11239 Accession# R1562
Costus malortieanus


Costus malortieanus - Click to see full sized image
Photo# 11240 Accession# R1562
Costus malortieanus


Costus malortieanus - Click to see full sized image
Photo# 11241 Accession# R1562
Costus malortieanus


Costus malortieanus  flower - Click to see full sized image
Photo# 11242 Accession# R1562
Costus malortieanus flower


Costus malortieanus  flower - Click to see full sized image
Photo# 11243 Accession# R1562
Costus malortieanus flower


Costus malortieanus  flower - Click to see full sized image
Photo# 11244 Accession# R1562
Costus malortieanus flower


Costus malortieanus  flower - Click to see full sized image
Photo# 11245 Accession# R1562
Costus malortieanus flower


Costus malortieanus  calyx and bracteole - Click to see full sized image
Photo# 11246 Accession# R1562
Costus malortieanus calyx and bracteole


Costus malortieanus  calyx and bracteole - Click to see full sized image
Photo# 11285 Accession# R1562
Costus malortieanus calyx and bracteole


Costus malortieanus  corolla lobes - Click to see full sized image
Photo# 11286 Accession# R1562
Costus malortieanus corolla lobes


Costus malortieanus  corolla lobes - Click to see full sized image
Photo# 11287 Accession# R1562
Costus malortieanus corolla lobes


Costus malortieanus  labellum and stamen - Click to see full sized image
Photo# 11288 Accession# R1562
Costus malortieanus labellum and stamen


Costus malortieanus  stamen - Click to see full sized image
Photo# 11289 Accession# R1562
Costus malortieanus stamen


Costus malortieanus  stamen - Click to see full sized image
Photo# 11290 Accession# R1562
Costus malortieanus stamen


Costus malortieanus  stamen - Click to see full sized image
Photo# 11291 Accession# R1562
Costus malortieanus stamen


Costus malortieanus  stamen - Click to see full sized image
Photo# 11292 Accession# R1562
Costus malortieanus stamen


Costus malortieanus  labellum - Click to see full sized image
Photo# 11293 Accession# R1562
Costus malortieanus labellum


Costus malortieanus  labellum - Click to see full sized image
Photo# 11294 Accession# R1562
Costus malortieanus labellum


Costus malortieanus  labellum - Click to see full sized image
Photo# 11295 Accession# R1562
Costus malortieanus labellum


Costus malortieanus  labellum center lobes - Click to see full sized image
Photo# 11296 Accession# R1562
Costus malortieanus labellum center lobes


Costus malortieanus - Click to see full sized image
Photo# 11297 Accession# R1562
Costus malortieanus


Costus malortieanus  sheaths - Click to see full sized image
Photo# 11298 Accession# R1562
Costus malortieanus sheaths


Costus malortieanus  Aged leaf top, newer leaf bottom - Click to see full sized image
Photo# 11299 Accession# R1562
Costus malortieanus Aged leaf top, newer leaf bottom


Costus malortieanus  leaf apex - Click to see full sized image
Photo# 11300 Accession# R1562
Costus malortieanus leaf apex


Costus malortieanus  leaf base - Click to see full sized image
Photo# 11301 Accession# R1562
Costus malortieanus leaf base


Costus malortieanus  Abaxiial side of leaves - Click to see full sized image
Photo# 11302 Accession# R1562
Costus malortieanus Abaxiial side of leaves


Costus malortieanus - Click to see full sized image
Photo# 11303 Accession# R1562
Costus malortieanus


Costus malortieanus  Note lack of ligule - Click to see full sized image
Photo# 11304 Accession# R1562
Costus malortieanus Note lack of ligule


Costus malortieanus - Click to see full sized image
Photo# 11305 Accession# R1562
Costus malortieanus


Costus malortieanus - Click to see full sized image
Photo# 11306 Accession# R1562
Costus malortieanus


Costus malortieanus - Click to see full sized image
Photo# 11307 Accession# R1562
Costus malortieanus


Costus malortieanus - Click to see full sized image
Photo# 11308 Accession# R1562
Costus malortieanus


Costus malortieanus - Click to see full sized image
Photo# 11309 Accession# R1562
Costus malortieanus


CLICK HERE for a detailed botanical description and identification key for this species (opens in new window).
CLICK HERE to see a description of accession #R1562 . (opens in new window).
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PLANT FAMILY: Costaceae
BOTANICAL NAME: Costus malortieanus
FORMAL SCIENTIFIC NAME: Costus malortieanus H.Wendl.
STATUS :Accepted
CONTINENT: Neotropical
SYNONYMS:


BOTANICAL NOTES:
This is an accepted neo-tropical Costus species first described by Wendland in 1863. ( Hamburger Garten- und Blumenzeitung 19: 30–31. 1863.) It is a short plant growing to no more than 1 meter tall, with a very short ligule (barely 1 mm long) and large felty leaves. It flowers terminally with green non-appendaged bracts and open-labellum flowers with creamy white to yellow corolla and red-striped labellum wings.

Im Walde in der Nahe des Sarapiquifluffes und nahe bei la Diuelle im nordlichen Costa Rica sand ich diese prachtige plfanze noch am Lage vor meiner Rudsehr nach Europa Mitte August 1857 (In the forest near the Sarapiqui ___ and near at la Diuelle (La Muelle?) in the northern Costa Rica I found this prachtige plfanze still able before my ___ to Europe mid-August 1857) This is a villiage on the river just north of Puerto Viejo de Sarapiqui and is in the general region of the OTS station La Selva.

The type is from the Sarapiqui River area of northern Costa Rica (per Maas at La Muelle) and it is found in other areas north of San Jose and adjoining Nicaragua where it is quite common. The species also has been widely cultivated for many years around the world. Maas did not see the type when writing his description of the species in his 1977 monograph.

In 2014 I completed an IUCN Red List assessment for this species and it is now classified as Least Concern. My assessment rationale can be found at http://www.iucnredlist.org/details/full/56347258/0.

ACCESSION NOTES:
R1562 from a nursery in Houston, this is common in cultivation and the plants I have seen in the wild are all consistent in appearance to this. It is sometimes called the "velvet stepladder ginger". I have seen it rated to zone 8B, but I think that is stretching it a bit, maybe zone 9, but the foliage melts away below 45 degrees F.

OBSERVATION NOTES:

Tenorio, Guanacaste, Costa Rica, Latitude 10.7132, Longitude -85.041367, at 760 meters elevation.

La Selva, Heredia Province, Sarapiqui, Costa Rica, Latitude 10.43, Longitude -84.009, at 60 meters elevation.

Pocosol, Alajuela Province, San Ramón, Costa Rica, Latitude 10.35, Longitude -84.67, at 800 meters elevation.

GINGERSRUS CATALOG LISTING:
Costus malortieanus - flower Costus malortieanus is a very popular ginger in the warmest parts of the southern United States. It has wonderful velvety foliage and you will just love to stroke and a nice dark green color. It is a relatively short plant in the ginger world, normally growing to a height of about 3 feet, but I have seen it a little taller than that. The flowers are also quite attractive as you can see from the pictures to the right.

I have seen references rating this Costus as zone 8B hardy, but I have not tested for cold hardiness myself. Even the very conservative Bob Riffle in The Tropical Look says it is root hardy in zone 9. I do know that cool weather (in the low forties or upper thirties will cause the foliage to shrivel and die on the edges, so I just don't trust those ratings to be perfectly honest, and I guess that is why I have never tested it outdoors here in winter.

This Costus seems to prefer shadier conditions than most, but I have grown it with no problems in a couple of hours of direct mid-day sun, so long as the soil was kept moist. As with most gingers, it prefers a moist, organic and fertile soil during active growth.


Costus malortieanus flowers Costus malortieanus - beautiful foliage

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