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Costus Species Botanical Description Botanical Description page for GingersRus plant database number " 4888 ".
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Costus sarmentosus

Costus sarmentosus Bojer


BOTANICAL NAME: Costus sarmentosus
SUBGENUS:Costus
GROUP:
SECTION:
PRIMARY SOURCE USED FOR DESCRIPTION:Lock - Flora of Tropical East Africa, 1985
SECONDARY SOURCES:
LAST UPDATED:
NOTES AND DISTINGUISHING CHARACTERISTICS:Description from Lock and Polhill, Flora of Tropical East Africa
NATURAL DISTRIBUTION:Limited distribution in Kenya, Tazmania, Zanzibar
HEIGHT:1 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
Sheath

glabrous
striate

0 to 0 cm 0 to 0 mm
Ligule

marginal fringe arachnose hairs, sometimes at base
coriaceous

5 to 12 mm 0 to 0 mm
Petiole




3 to 10 mm 0 to 0 mm
Leaf



elliptic to obovate
14 to 31 cm 4 to 10 cm
...upper

glabrous except margins




...under

appressed pub. on midrib




...base






...apex



acuminate
0 to 0 mm
Inflorescence usually terminal, sometimes basal shoot




0 to 0 cm 0 to 0 cm
Bract



broadly obovate, strongly convex, apex round-trunc
2.0 to 2.5 cm 1.0 to 1.5 cm
Appendage




0.0 to 0.0 cm 0.0 to 0.0 cm
Bracteole


coriaceous
boat shape
1.8 to 2.0 cm 0.5 to 0.8 cm
Flower single per bract




0 to 0 cm 0 to 0 cm
Calyx



lobes in-curved
1.4 to 1.5 cm 0.0 to 0.0 cm
Corolla tube 1.4-1.7
white


oblong to obovate
3.0 to 3.2 cm 1.0 to 1.2 cm
Labellum
white, flushed pink, yellow patch center


funnel shape, triangular
4.0 to 0.0 cm 4.0 to 0.0 cm
Stamen anther 9 mm



eliptic
2.0 to 2.5 cm 1.2 to 0.0 cm

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