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Costus Species Botanical Description Botanical Description page for GingersRus plant database number " 3603 ".
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Costus leucanthus

Costus leucanthus Maas



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Photo# 12678 Specimen# R0
Costus leucanthus at Waimea Audubon Center, Oahu, Hawaii #91P294


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Photo# 12679 Specimen# R0
Costus leucanthus at Waimea Audubon Center, Oahu, Hawaii #91P294


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Photo# 12680 Specimen# R0
Costus leucanthus at Waimea Audubon Center, Oahu, Hawaii #91P294 ligules


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Photo# 12681 Specimen# R0
Costus leucanthus at Waimea Audubon Center, Oahu, Hawaii #91P294


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Photo# 12682 Specimen# R0
Costus leucanthus at Waimea Audubon Center, Oahu, Hawaii #91P294


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Photo# 12683 Specimen# R0
Costus leucanthus at Waimea Audubon Center, Oahu, Hawaii #91P294


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Photo# 12684 Specimen# R0
Costus leucanthus at Waimea Audubon Center, Oahu, Hawaii #91P294 bracts


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Photo# 12685 Specimen# R0
Costus leucanthus at Waimea Audubon Center, Oahu, Hawaii #91P294 bracts


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Photo# 12686 Specimen# R0
Costus leucanthus at Waimea Audubon Center, Oahu, Hawaii #91P294 flower


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Photo# 12687 Specimen# R0
Costus leucanthus at Waimea Audubon Center, Oahu, Hawaii #91P294 corolla lobes


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Photo# 12688 Specimen# R0
Costus leucanthus at Waimea Audubon Center, Oahu, Hawaii #91P294 stamen


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Photo# 12689 Specimen# R0
Costus leucanthus at Waimea Audubon Center, Oahu, Hawaii #91P294 stamen


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Photo# 12690 Specimen# R0
Costus leucanthus at Waimea Audubon Center, Oahu, Hawaii #91P294 bracteole and calyx


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Photo# 12691 Specimen# R0
Costus leucanthus at Waimea Audubon Center, Oahu, Hawaii #91P294 calyx


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Photo# 12692 Specimen# R0
Costus leucanthus at Waimea Audubon Center, Oahu, Hawaii #91P294 flower parts


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Photo# 12693 Specimen# R0
Costus leucanthus at Waimea Audubon Center, Oahu, Hawaii #91P294 labellum


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Photo# 12694 Specimen# R0
Costus leucanthus by Karen Skinner at Waimea Audubon Center, Oahu, Hawaii #91P294 David Orr and myself, note height of plant


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Photo# 16743 Specimen# R0
Costus leucanthus at Lita, Ecuador


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Photo# 16744 Specimen# R0
Costus leucanthus at Lita, Ecuador


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Photo# 16742 Specimen# R0
Costus leucanthus at Lita, Ecuador


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Photo# 16740 Specimen# R0
Costus leucanthus at Lita, Ecuador


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Photo# 16741 Specimen# R0
Costus leucanthus at Lita, Ecuador


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Photo# 16912 Specimen# R3199
Costus leucanthus at Pachijal, Ecuador


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Photo# 16911 Specimen# R3199
Costus leucanthus at Pachijal, Ecuador


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Photo# 16910 Specimen# R3199
Costus leucanthus at Pachijal, Ecuador


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Photo# 16915 Specimen# R3199
Costus leucanthus at Pachijal, Ecuador


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Photo# 16913 Specimen# R3199
Costus leucanthus at Pachijal, Ecuador


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Photo# 16909 Specimen# R3199
Costus leucanthus at Pachijal, Ecuador


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Photo# 16914 Specimen# R3199
Costus leucanthus at Pachijal, Ecuador


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Photo# 16916 Specimen# R3199
Costus leucanthus at Pachijal, Ecuador


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Photo# 16917 Specimen# R3199
Costus leucanthus at Pachijal, Ecuador


BOTANICAL NAME: Costus leucanthus
SUBGENUS:Costus
GROUP:1-bracts with appendage
SECTION:I-Costus
PRIMARY SOURCE USED FOR DESCRIPTION:Maas, Flora Neotropica No. 18, 1977
SECONDARY SOURCES:
LAST UPDATED:
NOTES AND DISTINGUISHING CHARACTERISTICS:Beautiful species well marked by showy white flowers and very long ligule, closely related to C. villosissimus & C. guanaiensis (some specimens appear to have introgressed with C. laevis).
NATURAL DISTRIBUTION:Lowlands of El Valle, Colombia, along roadsides
HEIGHT:0 to 2 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
Sheath

densely to rather densely hirsute


0 to 0 cm 25 to 30 mm
Liguleligule very long, 55-70 mm, lobed deeply,un

densely to rather densely hirsute

lobes deltate to triangular acute
55 to 70 mm 0 to 0 mm
Petiole

densely to rather densely hirsute


10 to 15 mm 0 to 0 mm
Leaf



narrowly elliptic
40 to 55 cm 11 to 16 cm
...upper

densely to rather densely hirsute




...under

densely to rather densely hirsute




...base



cuneate to rounded


...apex



acute to acuminate
0 to 30 mm
Inflorescence terminal on a leafy stem, elongages to 35cm by 12 cm in fruit.



ovoid to cylindric
10 to 17 cm 9 to 10 cm
Bract all bracts with foliaceous, green appendages, or apices of all bracts reflexed., callus 3-8 mm by 2-4 mm
red
adaxial glabrous, abaxial sparsely puberulous
coriaceous
broadly ovate
3.0 to 5.0 cm 2.5 to 4.0 cm
Appendage lower horizontally spreading, upper vertically ascending
green
densely to rather densely hirsute
foliaceous
trinagular to triangular acute
4.0 to 8.0 cm 1.5 to 3.0 cm
Bracteole
red, apex green
puberulous


2.8 to 3.1 cm 0.0 to 0.0 cm
Flower




0 to 0 cm 0 to 0 cm
Calyx
red, apex green
puberulous

lobes deltate to triangular
1.6 to 2.0 cm 0.8 to 1.2 cm
Corolla tube 20 mm
white
glabrous


8.0 to 8.5 cm 0.0 to 0.0 cm
Labellum large, spreading limb, margins fimbriate, middle lobe reflexed
white, slightly tinged with yellow center


broadly ovate, irreg. Trilobulate, lobules dentate
6.5 to 7.0 cm 6.0 to 6.5 cm
Stamen anther 15 mm by 4 mm
white



5.0 to 5.5 cm 0.0 to 1.5 cm

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