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Costus Species Botanical Description Botanical Description page for GingersRus plant database number " 3789 ".
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Costus productus

Costus productus Gleason ex Maas



Accession # R2693 identified as Costus productus from Le Jardin Ombragé
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Photo# 11439 Specimen# R2693
Costus productus - note bract margins curved INWARDS. Plant tagged as Costus curvibracteatus


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Photo# 11440 Specimen# R2693
Costus productus - bracts. Plant tagged as Costus curvibracteatus


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Photo# 11441 Specimen# R2693
Costus productus - bracts. Plant tagged as Costus curvibracteatus


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Photo# 11442 Specimen# R2693
Costus productus - calyx and bracteole. Plant tagged as Costus curvibracteatus


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Photo# 11443 Specimen# R2693
Costus productus - calyx and bracteole. Plant tagged as Costus curvibracteatus


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Photo# 11444 Specimen# R2693
Costus productus - corolla lobes. Plant tagged as Costus curvibracteatus


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Photo# 11445 Specimen# R2693
Costus productus - corolla lobes. Plant tagged as Costus curvibracteatus


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Photo# 11446 Specimen# R2693
Costus productus - flower. Plant tagged as Costus curvibracteatus


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Photo# 11447 Specimen# R2693
Costus productus - note hairs on leaves, adaxial side. Plant tagged as Costus curvibracteatus


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Photo# 11448 Specimen# R2693
Costus productus - entire inflorescence. Plant tagged as Costus curvibracteatuse


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Photo# 11449 Specimen# R2693
Costus productus - inflorescence. Plant tagged as Costus curvibracteatus


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Photo# 11450 Specimen# R2693
Costus productus - labellum. Plant tagged as Costus curvibracteatus


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Photo# 11451 Specimen# R2693
Costus productus - labellum. Plant tagged as Costus curvibracteatus


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Photo# 11452 Specimen# R2693
Costus productus - labellum. Plant tagged as Costus curvibracteatus


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Photo# 11453 Specimen# R2693
Costus productus - leaf apex. Plant tagged as Costus curvibracteatus


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Photo# 11454 Specimen# R2693
Costus productus - leaves. Plant tagged as Costus curvibracteatus


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Photo# 11455 Specimen# R2693
Costus productus stamen


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Photo# 11456 Specimen# R2693
Costus productus stamen


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Photo# 11457 Specimen# R2693
Costus productus Plant tagged as Costus curvibracteatus


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Photo# 11458 Specimen# R2693
Costus productus Plant tagged as Costus curvibracteatus


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Photo# 11459 Specimen# R2693
Costus productus Plant tagged as Costus curvibracteatus


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Photo# 11460 Specimen# R2693
Costus productus Plant tagged as Costus curvibracteatus


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Photo# 11461 Specimen# R2693
Costus productus ligule - Plant tagged as Costus curvibracteatus


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Photo# 11462 Specimen# R2693
Costus productus


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Photo# 11463 Specimen# R2693
Costus productus


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Photo# 11464 Specimen# R2693
Costus productus


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Photo# 12429 Specimen# R2693
Costus productus stigma


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Photo# 12430 Specimen# R2693
Costus productus stigma


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Photo# 11465 Specimen# R0
Costus productus at Atlanta Botanic Garden, Atlanta, GA No tag on plant, identification uncertain.


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Photo# 11466 Specimen# R0
Costus productus by Kathleen Kay, Michigan State University In horticulture as Costus curvibracteatus -


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Photo# 11467 Specimen# R0
Costus productus at Como Park Conservatory, St. Paul, MN


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Photo# 11468 Specimen# R0
Costus productus at Como Park Conservatory, St. Paul, MN Note long lobed ligule.


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Photo# 11469 Specimen# R0
Costus productus at Como Park Conservatory, St. Paul, MN


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Photo# 12724 Specimen# R0
Costus productus at Lyon Arboretum, Oahu, Hawaii


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Photo# 12725 Specimen# R0
Costus aff. productus at Lyon Arboretum, Oahu, Hawaii


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Photo# 12726 Specimen# R0
Costus aff. productus at Lyon Arboretum, Oahu, Hawaii


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Photo# 12727 Specimen# R0
Costus aff. productus at Lyon Arboretum, Oahu, Hawaii


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Photo# 12728 Specimen# R0
Costus aff. productus at Lyon Arboretum, Oahu, Hawaii


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Photo# 11470 Specimen# R0
Costus productus at Selby Botanical Gardens, Sarasota, FL


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Photo# 11471 Specimen# R0
Costus productus at Selby Botanical Gardens, Sarasota, FL


BOTANICAL NAME: Costus productus
SUBGENUS:Costus
GROUP:1-bracts with appendage
SECTION:II-Ornithophilus
PRIMARY SOURCE USED FOR DESCRIPTION:Maas, Flora Neotropica No. 18, 1977
SECONDARY SOURCES:
LAST UPDATED:
NOTES AND DISTINGUISHING CHARACTERISTICS:Maas says C. productus is characterized by its red bract-appendages, a very long fragile ligule, and a relatively long callus of the bracts. Maas describes two varieties of C. productus. Variety productus has glabrous to sparsely puberulous leaves. Variety strigosus has densely strigose leaves. Illustration in Flora Neotropica No. 18 is of var. strigosus.

This plant is apparently incorrectly identified in the horticultural trade as Costus curvibracteatus. I have included here photos of the plant in the trade as C. curvibracteatus, now believed to be C. productus var. productus.
NATURAL DISTRIBUTION:Colombia and Peru in forests from sea level to 700 m.
HEIGHT:0 to 1 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

puberulous to strigose
membranaceous

0 to 0 cm 8 to 15 mm
Ligulelong, 20-40mm

puberulous to strigose
membranaceous
unequally 2-lobed, lobes rounded to obtuse
20 to 40 mm 0 to 0 mm
Petiole

densely villose to hirsute


2 to 5 mm 0 to 0 mm
Leaf plant glabrous to strigose



narrowly elliptic to narrowly obovate
16 to 32 cm 5 to 9 cm
...upper

densely strigose to glabrous, costa strigose




...under

densely strigose to glabrous




...base



rounded


...apex



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



ovoid
6 to 11 cm 3 to 4 cm
Bract margins not delacerating into fibers, callus 6-12 mm long
bright red to orange
glabrous to sparsely puberulous
chartaceous to coriaceous
broadly ovate
0.0 to 2.5 cm 0.0 to 3.0 cm
Appendage all bracts with foliaceous, reddish appendages, or apices of all bracts reflexed. Callus 6-12 mm long
red, lower ones greenish
densely puberulous
foliaceous
broadly ovate to deltate, acute to obtuse
0.5 to 2.0 cm 0.5 to 2.0 cm
Bracteole callus to 4 mm long

sparsely puberlous at base
margins not delacerating into fibers
boat shape
0.0 to 1.7 cm 0.0 to 0.0 cm
Flower




0 to 0 cm 0 to 0 cm
Calyx

glabrous to densely puberulous
margins not delacerating into fibers
lobes shallowly triangular to deltate
1.0 to 1.5 cm 0.0 to 0.0 cm
Corolla tube 10 mm long
pale yellow to orange
glabrous

lobes narrowly obovate
3.5 to 4.2 cm 0.0 to 0.0 cm
Labellum small, tubular, lateral lobes involute and forming tube



oblong-obovate when spread
2.5 to 3.5 cm 0.8 to 1.5 cm
Stamen apex rounded or obtuse, anther 6-8 mm long



narrowly elliptic
2.5 to 3.0 cm 0.4 to 0.8 cm

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