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Costus Species Botanical Description Botanical Description page for GingersRus plant database number " 3087 ".
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Chamaecostus cuspidatus

Chamaecostus cuspidatus (Nees & Mart.) C.Specht & D.W.Stev.



Accession # R1360 identified as Chamaecostus cuspidatus from Le Jardin Ombragé
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Photo# 13160 Specimen# R1360
Chamaecostus cuspidatus basal stems, note very short ligule


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Photo# 13161 Specimen# R1360
Chamaecostus cuspidatus bracteole and calyx


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Photo# 13162 Specimen# R1360
Chamaecostus cuspidatus bracteole and calyx


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Photo# 13163 Specimen# R1360
Chamaecostus cuspidatus bracteole, as in other Chamaecostus it is bicarinate (two keeled)


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Photo# 13164 Specimen# R1360
Chamaecostus cuspidatus bracts with leafy appendages


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Photo# 13165 Specimen# R1360
Chamaecostus cuspidatus bracts with leafy appendages


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Photo# 13166 Specimen# R1360
Chamaecostus cuspidatus corolla lobes


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Photo# 13167 Specimen# R1360
Chamaecostus cuspidatus flower


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Photo# 13168 Specimen# R1360
Chamaecostus cuspidatus labellum


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Photo# 13169 Specimen# R1360
Chamaecostus cuspidatus leaf


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Photo# 13170 Specimen# R1360
Chamaecostus cuspidatus seeds


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Photo# 13171 Specimen# R1360
Chamaecostus cuspidatus seeds


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Photo# 13172 Specimen# R1360
Chamaecostus cuspidatus sheath


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Photo# 13173 Specimen# R1360
Chamaecostus cuspidatus stamen


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Photo# 13174 Specimen# R1360
Chamaecostus cuspidatus stamen


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Photo# 13175 Specimen# R1360
Chamaecostus cuspidatus stamen


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Photo# 13176 Specimen# R1360
Chamaecostus cuspidatus, cup shaped stigma without lobes


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Photo# 13177 Specimen# R1360
Chamaecostus cuspidatus, cup shaped stigma without lobes


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Photo# 13178 Specimen# R1360
Chamaecostus cuspidatus, cup shaped stigma without lobes


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Photo# 13093 Specimen# R1360
Chamaecostus cuspidatus cultivated plant


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Photo# 13094 Specimen# R1360
Chamaecostus cuspidatus cultivated plant


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Photo# 13095 Specimen# R1360
Chamaecostus cuspidatus cultivated plant


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Photo# 13096 Specimen# R1360
Chamaecostus cuspidatus cultivated plant


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Photo# 13097 Specimen# R1360
Chamaecostus cuspidatus cultivated plant


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Photo# 13098 Specimen# R1360
Chamaecostus cuspidatus cultivated plant


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Photo# 13099 Specimen# R1360
Chamaecostus cuspidatus cultivated plant


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Photo# 13100 Specimen# R0
Chamaecostus cuspidatus at Univ. of NC, Charlotte


BOTANICAL NAME: Chamaecostus cuspidatus
SUBGENUS:
GROUP:Bracts appendaged
SECTION:
PRIMARY SOURCE USED FOR DESCRIPTION:Maas, Flora Neotropica No. 8, 1972
SECONDARY SOURCES:
LAST UPDATED:
NOTES AND DISTINGUISHING CHARACTERISTICS:This is a very popular cultivated ginger, very showy with its orange flowers. Maas listed this as C. igneus in Flora Neotropica No 8, then determined in No. 18 that the earlier name was C. cuspidatus. Easily identified by the broad orange labellum with irregular "chopped" edges. Interesting also because the shape of the bracteole differs from most other Costus spp.

Photos to the left are of the plant common in horticulture, which closely matches this description.
NATURAL DISTRIBUTION:Primary forests, deep shade in southeastern Brazil, rare in nature but widely cultivated.
HEIGHT:0 to 0 meters
Botanical Description for this Species
For illustrations or explanation of terminology, click on the linked plant part or column header.
Descriptions used for plant identification key are shown in BOLD.
Plant PartGeneralColorHairsTextureShape LengthWidth
Rhizomeroots fleshy, somewhat thickened on the ends




0 to 0 cm0 to 0 cm
Sheath
purple-red
glabrous
punctate

0 to 0 cm 5 to 10 mm
Ligule

glabrous


1 to 2 mm 0 to 0 mm
Petiole

sparsely puberulous


1 to 3 mm 0 to 0 mm
Leaf



narrowly elliptic to narrowly obovate
11 to 18 cm 3 to 6 cm
...upper

glabrous to sparsely puberulous




...under

glabrous to sparsely puberulous




...base



cuneate


...apex



shortly acuminate
1 to 3 mm
Inflorescence terminal on leafy stem




0 to 0 cm 0 to 0 cm
Bract
light green
glabrescent
herbaceous, fleshy

0.0 to 4.0 cm 0.0 to 1.5 cm
Appendage appendage found on bract or apex reflexed
green
glabrous to sparsely puberulous
foliaceous
narrowly triangular to deltate
2.0 to 11.0 cm 1.5 to 4.5 cm
Bracteole bicarinate on adaxial side, 2 lobed at apex

glabrous
membranaceous
tubular, often split on abaxial side
2.5 to 3.0 cm 0.0 to 0.0 cm
Flower 3 to 8 flowered, pedicel fleshy green, basal part of stamen and labellum joined in tube 35-40 mm long
orange



0 to 0 cm 0 to 0 cm
Calyx 21-41 mm long,with callus 2-3 mm long
light green
densely minutely puberulous
membranaceous to herbaceous

3.0 to 4.0 cm 0.0 to 0.0 cm
Corolla tube 25 mm long
orange
glabrous to sparsely puberulous


0.0 to 6.0 cm 0.0 to 0.0 cm
Labellum margins dentate
orange


suborbicular in outline
0.0 to 0.0 cm 5.0 to 7.0 cm
Stamen anther obtuse at the apex, color golden yellow
yellow
apex densley covered with white hairs on adaxial

narrowly triangular
0.0 to 1.5 cm 0.5 to 0.8 cm

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