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Costus Species Botanical Description Botanical Description page for GingersRus plant database number " 4008 ".
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Costus quasi-appendiculatus

Costus quasi-appendiculatus Woodson ex Maas



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Photo# 16991 Specimen# R0
Costus quasi-appendiculatus


BOTANICAL NAME: Costus quasi-appendiculatus
SUBGENUS:Costus
GROUP:1-bracts with appendage
SECTION:II-Ornithophilus
PRIMARY SOURCE USED FOR DESCRIPTION:Maas, Flora Neotropica No. 8, 1972
SECONDARY SOURCES:
LAST UPDATED:
NOTES AND DISTINGUISHING CHARACTERISTICS:This species is close to Costus comosus, distinguished by the sub-appendaged bracts, and the calyx which exceeds the bracts during fructification.
NATURAL DISTRIBUTION:Collected near Calisaya, Rio Bopi, dep. La Paz, Bolivia, 750-900 m.
HEIGHT:0 to 0 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 to puberulous


0 to 0 cm 7 to 15 mm
Ligulevery short, 1-6 mm

glabrous to puberulous

truncate
1 to 2 mm 0 to 0 mm
Petiole




6 to 8 mm 0 to 0 mm
Leaf



narrowly elliptic to narrowly obovate
14 to 32 cm 4 to 8 cm
...upper

glabrous
not scabrid to touch



...under

densely velutinous




...base



subcordata


...apex



shortly acuminate
0 to 0 mm
Inflorescence terminal on a leafy stem.



ovoid
0 to 5 cm 0 to 3 cm
Bract Tips of bracts slightly reflexed forming a depressed-ovate appendage, callus 4 mm long
red
densely puberulous
coriaceous
widelyovate
0.0 to 2.5 cm 0.0 to 3.0 cm
Appendage 3-8 mm long, reflexed
red
densely puberulous


0.3 to 0.8 cm 0.5 to 2.0 cm
Bracteole

densely puberulous

boat shape
0.0 to 1.6 cm 0.0 to 0.0 cm
Flower




0 to 0 cm 0 to 0 cm
Calyx

densely puberulous

lobes triangular
0.7 to 1.0 cm 0.0 to 0.0 cm
Corolla tube 5-10 mm

densely puberulous

lobes narrowly obovate
2.5 to 3.0 cm 0.0 to 0.0 cm
Labellum small, tubular



oblong obovate when spread
0.0 to 2.0 cm 0.0 to 1.0 cm
Stamen apex rounded, anter 6-7 mm long



narrowly elliptical
0.0 to 2.2 cm 0.4 to 0.7 cm

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