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Costus Species Botanical Description Botanical Description page for GingersRus plant database number " 4618 ".
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Cheilocostus lacerus

Cheilocostus lacerus (Gagnep.) C.Specht



Accession # R2974 identified as Cheilocostus lacerus from Le Jardin Ombragé
Accession # R2735 identified as Cheilocostus lacerus from Le Jardin Ombragé
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Photo# 13255 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13256 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13257 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13258 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13259 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13260 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13310 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13261 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13311 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13312 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13313 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13314 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13315 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13316 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13317 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13318 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13319 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13320 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13262 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13321 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13322 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13323 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13324 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13325 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13326 Specimen# R2735
Cheilocostus/Hellenia lacerus


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Photo# 13327 Specimen# R2974
Cheilocostus/Hellenia lacerus Smithsonian #2001-073


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Photo# 13263 Specimen# R2974
Cheilocostus/Hellenia lacerus Smithsonian #2001-073


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Photo# 13264 Specimen# R2974
Cheilocostus/Hellenia lacerus Smithsonian #2001-073


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Photo# 13265 Specimen# R2974
Cheilocostus/Hellenia lacerus Smithsonian #2001-073


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Photo# 13266 Specimen# R2974
Cheilocostus/Hellenia lacerus Smithsonian #2001-073


BOTANICAL NAME: Cheilocostus lacerus
SUBGENUS:
GROUP:
SECTION:
PRIMARY SOURCE USED FOR DESCRIPTION: Flora of China; Notes on Asiatic and Australian Costoidae, 1979
SECONDARY SOURCES:
LAST UPDATED:
NOTES AND DISTINGUISHING CHARACTERISTICS:Description from Flora of China. Additional description by Maas, differences noted. (Dr. PJM Maas, in Notes on Asiatic and Australian Costoidae, Blumea 25 (1979) 543-549)

Several of the pictures to the left were taken at the Smithsonian USBRG#2001-073. The other photos, including the details of flower parts, were taken from my garden from a specimen received from hort. trade that was incorrectly identified as Costus speciosus.
NATURAL DISTRIBUTION:moist forests, 1100-2200 m, Yunnan, also bhutan, N. India, Sikkim and N. Thailand
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 20 cm
Sheath

hirsute when young to glabrescent, apex ciliate


0 to 0 cm 15 to 30 mm
Ligulemargins decaying into arachnoid fibres



obliquely rounded
1 to 3 mm 0 to 0 mm
Petiole

densely pub. to villose


0 to 10 mm 0 to 0 mm
Leaf subsessile



elliptic or lanceolate-oblong
20 to 46 cm 7 to 15 cm
...upper

glabrescent




...under

hirsute, densely puberulous




...base



attenuate, rounded to cordate


...apex



acute to shortly acuminate
0 to 0 mm
Inflorescence terminal on leafy stem



ovoid
4 to 11 cm 4 to 7 cm
Bract apex breaking into fiber, margins arachnoid fibers
red
glabrous to densely puberulous or villose
coriaceous to chartaceous
ovate or broadly ovate
2.0 to 5.0 cm 1.0 to 2.0 cm
Appendage




0.0 to 0.0 cm 0.0 to 0.0 cm
Bracteole margins strongly decaying into arachnoid fibers

glabrous to densely villose

ovate
0.8 to 1.7 cm 0.0 to 0.0 cm
Flower
pink



0 to 0 cm 0 to 0 cm
Calyx split to base on one side, apex 3 toothed
yellow (Maas= red)
hirsute at apex
dilacerating into fibers
mostly bicarinate on adaxial side
2.0 to 2.9 cm 0.0 to 0.0 cm
Corolla tube 1.5 cm,
white
glabrous

lobes oblong
3.5 to 5.0 cm 1.0 to 2.5 cm
Labellum margin crisped
pink (Maas=white tinged with yellow in mid & apex)


trumpet shaped
6.0 to 9.0 cm 6.0 to 9.0 cm
Stamen apex convex
white


oblong
0.0 to 5.0 cm 0.6 to 1.2 cm

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