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Histiopteris
Species in Papuasia
| 1a. | Rhizome high-climbing starting from the ground; fronds small (Lepidocaulon) | H. caudata |
| Rhizome terrestrial, fronds large, +/-; scandent (Histiopteris) | 2 | |
| 2a. | Frond with dark scales on rachises | H. squamulata |
| Fronds naked | 3 | |
| 3a. | Stipule-like leaflets present at bases of pinnae | H. incisa |
| Stipule-like leaflets absent | H. estipulata |