 Photo# 15199 Specimen# R0 Costus dubius tagged dallachyi at NTBG 77-059001
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 Photo# 15198 Specimen# R0 Costus dubius tagged dallachyi at NTBG 77-059001
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 Photo# 15220 Specimen# R0 Costus dubius compared to Costus maculatus
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 Photo# 15197 Specimen# R2614 Costus dubius From cultivated,
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 Photo# 15196 Specimen# R2614 Costus dubius From cultivated,
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 Photo# 15195 Specimen# R2614 Costus dubius From cultivated,
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 Photo# 15219 Specimen# R2614 Costus dubius From cultivated,
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 Photo# 15194 Specimen# R0 Costus dubius at Marie Selby Gardens
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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 Part | General | Color | Hairs | Texture | Shape | Length | Width |
Rhizome |
|
|
|
|
| 0 to 0 cm | 0 to 0 cm |
Sheath |
|
| glabrous
| sulcate | | 0 to 0 cm | 0 to 0 mm |
Ligule |
| | glabrous
| coriaceous |
| 7 to 10 mm | 0 to 0 mm |
Petiole |
|
|
| |
| 7 to 20 mm | 0 to 0 mm |
Leaf |
| | |
| elliptic | 24 to 36 cm | 6 to 9 cm |
...upper | |
| ciliate margin toward apex
| somewhat succulent
|
|
|
|
...under | |
| midrib appressed pubescent, otherwise glabrous
| | | | |
...base | |
| |
| cuneate
| |
|
...apex | | | | | acuminate
| 0 to 0 mm | |
Inflorescence | Basal - on separate leafless shoot
| |
|
|
| 0 to 0 cm | 0 to 0 cm |
Bract | | green with purple markings, darker margins
|
|
| obtuse | 2.5 to 3.5 cm | 1.5 to 0.0 cm |
Appendage | | |
|
| | 0.0 to 0.0 cm | 0.0 to 0.0 cm |
Bracteole |
| pale green, glossy
|
| | boat, thickened toward apex
| 2.0 to 2.5 cm | 1.0 to 1.5 cm |
Flower | single flower per bract | white w/ yellow center | |
|
| 0 to 0 cm | 0 to 0 cm |
Calyx | | pale green | glabrous
| fleshy
| urceoate, 3 lobed
| 1.2 to 1.5 cm | 0.0 to 0.0 cm |
Corolla | tube 1.5 cm, hairy inside | white, semi transparent |
|
| slightly hooded at apex
| 2.0 to 2.5 cm | 0.8 to 1.0 cm |
Labellum | anther 7-8 mm long
| white, central lemon yellow mark
|
| thin, waivy margin
| triangular, funnel shaped
| 2.5 to 0.0 cm | 2.0 to 0.0 cm |
Stamen |
| |
| | petaloid, eliptic, obtuse
| 2.0 to 2.5 cm | 1.0 to 0.0 cm |