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Costus Species Botanical Description Botanical Description page for GingersRus plant database number " 4617 ".
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SUBGENUS:
GROUP:
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PRIMARY SOURCE USED FOR DESCRIPTION:
SECONDARY SOURCES:
LAST UPDATED:
NOTES AND DISTINGUISHING CHARACTERISTICS:Description from Flora of China
NATURAL DISTRIBUTION:forest margins, ca 1200 meters, w. Yunnan
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
green
apex densely white pubescent, white long ciliate


0 to 0 cm 0 to 0 mm
Ligule




0 to 0 mm 0 to 0 mm
Petiole




0 to 0 mm 0 to 0 mm
Leaf subsessile



elliptic or lanceolate-elliptic
18 to 33 cm 6 to 14 cm
...upper

glabrous




...under

densely villose




...base



rounded or cuneate


...apex



acuminate
0 to 0 mm
Inflorescence terminal on leafy stem



ovoid, or broadly ovoid
4 to 13 cm 3 to 9 cm
Bract breaking into fibers when old
bright red
densely villose

oblong
2.8 to 4.0 cm 1.2 to 1.6 cm
Appendage




0.0 to 0.0 cm 0.0 to 0.0 cm
Bracteole
pink
densely pubescent

narrowly oblong, plicate
3.0 to 3.2 cm 0.0 to 0.0 cm
Flower flowers in August




0 to 0 cm 0 to 0 cm
Calyx 3 toothed, ciliate at apex
pink
densely pubescent


1.5 to 2.0 cm 0.0 to 0.0 cm
Corolla tube 1 cm, lobes subequal, central one elliptic
white, apex red spotted



0.0 to 4.5 cm 0.0 to 2.2 cm
Labellum margin crisped
white


trumpet shaped
0.0 to 0.0 cm 5.0 to 6.0 cm
Stamen anther narrowly elliptic



elliptic
0.0 to 4.5 cm 0.0 to 1.5 cm

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