Family: Polypodiaceae
High Risk Traits:
- High suitability for tropical/subtropical climates
- Naturalized beyond native range (Hawaii, disturbed forests)
- Tolerates full sun to deep shade
- Tolerates wide range of soil types (including clay)
- Can be epiphytic or terrestrial (smothering potential)
- Produces viable, easily germinated spores
- Self-compatible (intragametophytic selfing)
- Propagates vegetatively via rhizome division
- Widely cultivated and intentionally spread by people
- Spores dispersed by wind
- Prolific spore production
Low Risk Traits:
- Damaged by heavy frost (USDA zones 10–11 only)
- Not reported as an agricultural, garden, or environmental weed
- No spines, thorns, or burrs
- Not allelopathic, parasitic, or toxic
- No known pests or pathogens
