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Costus Species Botanical Description Botanical Description page for GingersRus plant database number " 4047 ".
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Costus claviger

Costus claviger Benoist



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Photo# 15295 Specimen# R2725
Costus claviger - ligules


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Photo# 15296 Specimen# R2725
Costus claviger - ligules


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Photo# 15297 Specimen# R2725
Costus claviger, short, basal flowering form


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Photo# 15298 Specimen# R2725
Costus claviger, short, basal flowering form


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Photo# 15299 Specimen# R2725
Costus claviger, short, basal flowering form


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Photo# 15300 Specimen# R2725
Costus claviger, short, basal flowering form


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Photo# 15301 Specimen# R2725
Costus claviger, short, basal flowering form


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Photo# 15302 Specimen# R2725
Costus claviger, short, basal flowering form


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Photo# 15303 Specimen# R2725
Costus claviger, short, basal flowering form


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Photo# 15723 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15724 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15725 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15726 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15727 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15728 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15729 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15730 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15731 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15732 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15733 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15734 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15735 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15736 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15737 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15738 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15739 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15740 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15741 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15742 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15743 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15744 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15745 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15746 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15747 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15748 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15749 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


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Photo# 15750 Specimen# R3219
Costus claviger - from Iwokrama Mountains in Guyana


BOTANICAL NAME: Costus claviger
SUBGENUS:Costus
GROUP:1-bracts with appendage
SECTION:I-Costus
PRIMARY SOURCE USED FOR DESCRIPTION:Maas, Flora Neotropica No. 8 and No. 18, 1972-1977
SECONDARY SOURCES:
LAST UPDATED:
NOTES AND DISTINGUISHING CHARACTERISTICS:Maas divides the C. claviger goup into three species (other two are C. erythrophyllus, C. varzearum) and an unnamed C. aff. claviger. The 4 plants are distinguished primarily by the length of the ligules, C. claviger having a relatively short ligule. C. claviger has a separate flowering shoot. The forms with the terminal inflo. were described as C. erythrophyllus and C. varzearum.

The photos to the left are from a plant identified by Tom Wood as Costus claviger. It bloomed for me in winter 2003-04 and appears to match the description below.
NATURAL DISTRIBUTION:Guianas, rain forest on sandy to clayey soil and often granite outcroppings to 1200 m.
HEIGHT:0 to 3 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
Rhizome




0 to 0 cm0 to 0 cm
Sheathflowering sheath obliquely truncate, 3-5 cm tall by 1-2.5 cm wide
often reddish
puberulo-strigose to glabrous


0 to 0 cm 4 to 20 mm
Ligule5-15 mm long

hairy like sheath

truncate or slightly 2-lobed
5 to 15 mm 0 to 0 mm
Petiole

hairy like sheath


3 to 15 mm 0 to 0 mm
Leaf plant glabrous to strigose



narrowly elliptic to narrowly obovate
10 to 50 cm 3 to 13 cm
...upper

glabrous to sparsely puberulous




...under
often reddish
glabrous to densely puberulo-strigose




...base



cunate to rounded


...apex



shortly acuminate
0 to 0 mm
Inflorescence Basal - on a separate leafless shoot, 18-50 cm tall.



ovoid
6 to 16 cm 3 to 7 cm
Bract all bracts with foliaceous, green appendages, or apices of all bracts reflexed., callus obsolete, less than 10 mm long.
dark red
densely puberulo-strigose
coriaceous
broadly ovate
3.0 to 6.0 cm 2.0 to 5.0 cm
Appendage prominently veined
green
densely puberulous
foliaceous
broadly triangular ovate, apex slighly rounded
0.5 to 2.0 cm 0.5 to 2.0 cm
Bracteole
pinkish red
densely puberulous

boat shape
2.5 to 3.0 cm 0.0 to 0.0 cm
Flower




0 to 0 cm 0 to 0 cm
Calyx
pinkish red, lobes reddish or green
densely puberulous

lobes deltate, 3-7 mm long
1.2 to 1.8 cm 0.0 to 0.0 cm
Corolla tube 10-20 mm long
yellow ( to white)
glabrous

lobes narrowly obovate
6.0 to 8.0 cm 0.0 to 0.0 cm
Labellum large, spreading limb
white to yellow, striped red



5.0 to 6.0 cm 5.0 to 6.0 cm
Stamen anther 10-12 mm
white


narrowly elliptic
4.0 to 5.0 cm 0.7 to 1.3 cm

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