Contains 1 accepted taxa overall.
Characteristics
Classification
Citation
COSTUS Linnaeus, Sp. Pl. 2. 1753.
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TYPE: Costus arabicus Linnaeus
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Costus pulverulentus | SPIRAL GINGER | Not Native |
Identification Key
1. Inflorescence bracts recurved to spreading, with red foliaceous appendages
1. Inflorescence bracts strictly appressed or nearly so, lacking appendages (at least most)
2
2. Inflorescence fusiform, the apex acute; bract margin pale and lacerate; leaf upper surface costa strigulose
2. Inflorescence cylindric, the apex rounded; bract margin not paler, entire to roughened; leaf upper surface costa strigulose or glabrous
3
3. Leaf costa upper surface strigulose; inflorescence bracts as wide as long, pale greenish to pale orange-red; calyx 3-7 mm long
3. Leaves glabrous; inflorescence bracts much wider than long, distal ones often lustrous red; calyx 6-9 mm long
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| Cadalvena | Cadalvena Fenzl, Sitzungsber. Kaiserl. Akad. Wiss., Math.-Naturwiss. Cl., Abt. 1. 51: 139. 1863. | TYPE: Cadalvena spectabilis Fenzl | |
| Jacuanga | Jacuanga T. Lestibudois, Ann. Sci. Nat., Bot., ser. 2. 15: 329, 341. 1841. | TYPE: Costus pisonis Lindley |