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Datasheet for Costus acreanus

Plant Datasheet for Costus acreanus

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Costus acreanus, Plowman et al 2298, Colombia, Leticia - note it has appendaged bracts as does the illustration but contrary to description. - Click to see full sized image
Photo# 15844 Accession# R0
Costus acreanus, Plowman et al 2298, Colombia, Leticia - note it has appendaged bracts as does the illustration but contrary to description.


Costus acreanus, Plowman 5011, Peru, near Pilcopata (Manu area) - Click to see full sized image
Photo# 15845 Accession# R0
Costus acreanus, Plowman 5011, Peru, near Pilcopata (Manu area)


Costus acreanus, Foster 6579, from Peru, Rio Manu, Cocha Cashu Station - Click to see full sized image
Photo# 15846 Accession# R0
Costus acreanus, Foster 6579, from Peru, Rio Manu, Cocha Cashu Station


Costus acreanus, Duarte #7146 - Herbarium at Jardim Botanico - Click to see full sized image
Photo# 15847 Accession# R0
Costus acreanus, Duarte #7146 - Herbarium at Jardim Botanico


Costus acreanus, Duarte #7146 - Herbarium at Jardim Botanico - Click to see full sized image
Photo# 15848 Accession# R0
Costus acreanus, Duarte #7146 - Herbarium at Jardim Botanico


Costus acreanus, Duarte #7146 - Herbarium at Jardim Botanico - Click to see full sized image
Photo# 15849 Accession# R0
Costus acreanus, Duarte #7146 - Herbarium at Jardim Botanico


Costus acreanus, Duarte #7144 - Herbarium at Jardim Botanico - Click to see full sized image
Photo# 15850 Accession# R0
Costus acreanus, Duarte #7144 - Herbarium at Jardim Botanico


Costus acreanus, Duarte #7144 - Herbarium at Jardim Botanico - Click to see full sized image
Photo# 15851 Accession# R0
Costus acreanus, Duarte #7144 - Herbarium at Jardim Botanico


Costus acreanus, Duarte #7144 - Herbarium at Jardim Botanico - Click to see full sized image
Photo# 15852 Accession# R0
Costus acreanus, Duarte #7144 - Herbarium at Jardim Botanico


Costus acreanus, Duarte #7144 - Herbarium at Jardim Botanico - Click to see full sized image
Photo# 15853 Accession# R0
Costus acreanus, Duarte #7144 - Herbarium at Jardim Botanico


Costus acreanus, Duarte #7144 - Herbarium at Jardim Botanico - Click to see full sized image
Photo# 15854 Accession# R0
Costus acreanus, Duarte #7144 - Herbarium at Jardim Botanico


Costus acreanus, Duarte #7144 - Herbarium at Jardim Botanico - Click to see full sized image
Photo# 15855 Accession# R0
Costus acreanus, Duarte #7144 - Herbarium at Jardim Botanico


Costus acreanus, Duarte #7144 - Herbarium at Jardim Botanico - Click to see full sized image
Photo# 15856 Accession# R0
Costus acreanus, Duarte #7144 - Herbarium at Jardim Botanico


Costus acreanus, Daly et al #9990 - Herbarium at Jardim Botanico - Click to see full sized image
Photo# 15857 Accession# R0
Costus acreanus, Daly et al #9990 - Herbarium at Jardim Botanico


Costus acreanus, Daly et al #9990 - Herbarium at Jardim Botanico - Click to see full sized image
Photo# 15858 Accession# R0
Costus acreanus, Daly et al #9990 - Herbarium at Jardim Botanico


Costus acreanus, Daly et al #9990 - Herbarium at Jardim Botanico - Click to see full sized image
Photo# 15859 Accession# R0
Costus acreanus, Daly et al #9990 - Herbarium at Jardim Botanico


Costus acreanus, Daly et al #9990 - Herbarium at Jardim Botanico - Click to see full sized image
Photo# 15860 Accession# R0
Costus acreanus, Daly et al #9990 - Herbarium at Jardim Botanico


Costus acreanus - the illustration in Maas' monograph shows appendaged bracts on full inflorescence, non-appendaged bracts in illustration part
Photo# 17528 Accession# R0
Costus acreanus - the illustration in Maas' monograph shows appendaged bracts on full inflorescence, non-appendaged bracts in illustration part"e". Description and type specimen appears to have non-appendaged bracts.


Costus acreanus specimen from Los Amigos, Madre de Dios, Peru (BRIT) - Click to see full sized image
Photo# 17529 Accession# R0
Costus acreanus specimen from Los Amigos, Madre de Dios, Peru (BRIT)


Costus acreanus lectotype specimen at Kew Gardens, collected by  Ule in 1911 along the Rio Acre in Peru near the border with BoliviaandBrazil. - Click to see full sized image
Photo# 17530 Accession# R0
Costus acreanus lectotype specimen at Kew Gardens, collected by Ule in 1911 along the Rio Acre in Peru near the border with BoliviaandBrazil.


CLICK HERE for a detailed botanical description and identification key for this species (opens in new window).

PLANT FAMILY: Costaceae
BOTANICAL NAME: Costus acreanus
FORMAL SCIENTIFIC NAME: Costus acreanus (Loes.) Maas
STATUS :Accepted
CONTINENT: Neotropical
SYNONYMS:
Costus cylindricus var. acreanus,

BOTANICAL NOTES:
Costus acreanus is a valid neotropical species described by Paul Maas in his 1972 monograph. It was originally described by Loesener in 1929 as Costus cylindricus var. acreanus. Maas describes it as being in the group with non-appendaged bracts and open flowers with distribution being in southwestern Brazil and adjacent parts of Peru in marshes, varzea forests and low hills to 700 meters. In 1977 he added amazonian Colombia to the area of distribution. The type is from the Rio Acre in Madre de Dios, Peru near the Brazil border. It was collected by Ernst Ule in 1911 and the herbarium specimen is at Kew Gardens in UK. Very few details are visible on the specimen.

There seems to be a lot of confusion about this species, with photos on the web showing a basal flowering plant, but specimens I have found that were determined by Maas as C. acreanus all are terminal flowering.

My research paper I prepared prior to going to the Manu area of Peru can be seen at http://www.gingersrus.com/botanical/CostusSpeciesUpperManu.pdf. My notes pertaining to C. acreanus begin on page 3 of this document.

PDF file with photos of Costaceae of Colombia include a photo of C. acreanus which seems to match the description in Flora Neo Tropica. See photo #2 on this document.

http://fm2.fieldmuseum.org/plantguides/guide_pdfs/316%20COSTACEAE%20Colombia-06.pdf

In 2014 I was in Brazil and visited the herbarium at the Jardim Botanico in Rio de Janeiro. There I found three sheets all det'd by Paul Maas as C. acreanus - one from state of Acre and two from Amazonas. They all have clearly NON-appendaged bracts and are terminal flowering plants. A collection by Daly et al, #9990, from the Rio Purus in Acre, Brazil is described as having the undersides of leaves a deep glossy red, bracts green tinged with red, flower pink with two broad yellow stripes.

I believe that the Costus known as 'El Whiskey' that I have seen in Manu, Peru and in the Tingo Maria area of Peru is likely to be the same species as the plant originally collected by Ule along the Rio Acre near the Peru border with Brazil that is the type for Costus acreanus. A field trip to that region might provide some answers to this species. Go to PID7260 for more details about Costus 'El Whiskey'.


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