Worldwide: 8 species in tropical Asia and Australia with one extending into tropical Africa. DRC: 3 taxa. |
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| Species | Botanical divisions | Content |
| stricta (Willd.) Raizada | Description, Image | |
| subscaposa (O.Hoffm.) G.L.Nesom | ||
| tigrensis (Oliv. & Hiern) G.L.Nesom | Description, Image |