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Costus Species Botanical Description Botanical Description page for GingersRus plant database number " 4871 ".
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Costus beckii

Costus beckii Maas & H.Maas



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Photo# 15399 Specimen# R3255
Costus aff. beckii form 1 from Atalaya, Peru - terminal inflorescences


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Photo# 15400 Specimen# R3255
Costus aff. beckii form 1 from Atalaya, Peru - basal inflorescence


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Photo# 15401 Specimen# R3255
Costus aff. beckii form 1 from Atalaya, Peru - in flower and in fruit


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Photo# 15402 Specimen# R3255
Costus aff. beckii form 1 from Atalaya, Peru - flower


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Photo# 15403 Specimen# R3255
Costus aff. beckii form 1 from Atalaya, Peru - bract - calyx - bracteole


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Photo# 15404 Specimen# R3255
Costus aff. beckii form 1 from Atalaya, Peru - corolla - labellum - stamen


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Photo# 15405 Specimen# R3255
Costus aff. beckii form 1 from Atalaya, Peru - flower


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Photo# 15406 Specimen# R3258
Costus aff beckii form 2 from Atalaya, Peru - terminal inflo (Bruce Dunstan)


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Photo# 15407 Specimen# R3258
Costus aff beckii form 2 from Atalaya, Peru - basal inflo


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Photo# 15408 Specimen# R3258
Costus aff beckii form 2 from Atalaya, Peru - old terminal inflo


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Photo# 15409 Specimen# R3258
Costus aff beckii form 2 from Atalaya, Peru - plant


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Photo# 15410 Specimen# R3258
Costus aff beckii form 2 from Atalaya, Peru - plant 2


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Photo# 15411 Specimen# R3258
Costus aff beckii form 2 from Atalaya, Peru - stem


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Photo# 15412 Specimen# R3258
Costus aff beckii form 2 from Atalaya, Peru - ligule


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Photo# 15413 Specimen# R3258
Costus aff beckii form 2 from Atalaya, Peru - inflorescence


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Photo# 15414 Specimen# R3258
Costus aff beckii form 2 from Atalaya, Peru - inflorescence bract edge


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Photo# 15415 Specimen# R3258
Costus aff beckii form 2 from Atalaya, Peru - bract


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Photo# 15416 Specimen# R3258
Costus aff beckii form 2 from Atalaya, Peru - bracteole and calyx


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Photo# 17702 Specimen# R0
Costus beckii Foster collection from Peru, det. by Maas


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Photo# 17703 Specimen# R0
Costus beckii type specimen from Bolivia


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Photo# 17704 Specimen# R0
Costus beckii type specimen from Bolivia


BOTANICAL NAME: Costus beckii
SUBGENUS:Costus
GROUP:2-bracts not appendaged
SECTION:II-Ornithophilus
PRIMARY SOURCE USED FOR DESCRIPTION:Maas, RBG Edinb. 46(3): 307-320
SECONDARY SOURCES:
LAST UPDATED:
NOTES AND DISTINGUISHING CHARACTERISTICS:Maas described and named this species in 1990. Species characterized by a separate basal infl., with red bracts and yellow tubular flowers, named after Stephan Beck. Differs from C. vargasii by its very long ligule and distinct indument.
NATURAL DISTRIBUTION:Known only from the type collection in Amazonian Bolivia and Peru, Madre de Dios, Manu, forested ridge and roadside.
HEIGHT:0 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
SheathOver 22mm diam. at base.

densely strigose


0 to 0 cm 25 to 0 mm
Ligulelong ligule

densely villose

unequally 2 lobed
55 to 60 mm 0 to 0 mm
Petiole

villose


10 to 20 mm 0 to 0 mm
Leaf densely hairy midrib



elliptic to obovate
39 to 43 cm 14 to 15 cm
...upper

densely villose or glabrous




...under

densely sericeous




...base



cunate


...apex



acuminate
0 to 15 mm
Inflorescence Basal - on a separate leafless shoot, truncate, to 110 cm tall



oblong to ellipsoid, acute at apex
9 to 20 cm 5 to 5 cm
Bract callus 6-9 mm long
reddish to purple
puberulous
coriaceous
broadly ovate to ovate
3.0 to 3.5 cm 2.0 to 3.0 cm
Appendage




0.0 to 0.0 cm 0.0 to 0.0 cm
Bracteole
reddish
puberulous

boat shape
23.0 to 30.0 cm 0.0 to 0.0 cm
Flower
yellow


tubular
0 to 0 cm 0 to 0 cm
Calyx
reddish
puberulous

tubular to turbinate, lobes trianbular
1.2 to 1.5 cm 0.5 to 1.0 cm
Corolla tube 15 mm long

puberulous


5.0 to 0.0 cm 0.0 to 0.0 cm
Labellum

dark colored hairs

elliptic
4.5 to 0.0 cm 2.5 to 0.0 cm
Stamen




4.5 to 0.0 cm 0.9 to 0.0 cm

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