Key Identification Features
- This species, commonly called the narrow filmy-fern, can be distinguished by its long, thin, creeping rhizome and membranous fronds that grow in moist areas.
- cupressiforme, by its distinct apically winged foliage.
- This feature means branching only occurs on the apex side, toward the main stem, a pattern called acroscopic branching.
- tunbrigense has a similar but distinct distribution to H.
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