Adiantum amblyopteridium

A medium-sized tropical maidenhair fern with arching fronds 60–100 cm long on dark purple stalks, and twice-divided, triangular blades with broad fan-shaped segments. It grows on shaded stream banks in lowland southern Mexico and Central America, so it wants warmth, shade, a constantly moist mix and humid air. Little has been written about it beyond its taxonomic description.

At home, aim for

Day Warm-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Ordinary room humidityBand in Plantistry

Light ShadeDLI and PPFD in Plantistry

No rest periodGrows in the ground

Where it grows wild

Grows on shaded banks of streams in tropical lowland forest, typically in moist, humus-rich soil. In Yucatán and Quintana Roo the bedrock is limestone.

Wikipedia gives 50–600 m. The 12 GBIF records with elevations span 142–1,149 m, median 740 m, which is somewhat higher.

Mexico SoutheastMexico Southwest

🔒 Growing it like that

The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:

✓ Day and night temperature targets, and the limits it tolerates

✓ Humidity band, and how to hold it

✓ Light as DLI and PPFD for a grow light

✓ Wet and dry seasons, and whether to rest it

✓ Substrate and airflow

✓ A step-by-step setup to grow it like the wild

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Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app.