Asplenium biscaynianum

Biscayne spleenwort

The Biscayne spleenwort, Asplenium ×biscaynianum, is a rare natural hybrid known only from southern Florida. It was described by Eaton in 1904. It grew in shaded limestone sinks and solution holes in the tropical hardwood hammocks of the Miami area. It is very rare or possibly lost in the wild, and specimens in cultivation are unusual.

At home, aim for

Day Warm-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Humid airBand in Plantistry

Light ShadeDLI and PPFD in Plantistry

No rest periodGrows on rock (lithophyte)

Where it grows wild

It is recorded from humid, shaded limestone solution holes and rock outcrops in south Florida hammocks. These habitats are cooler and much more humid than the open ground around them. This comes from general knowledge of Florida's rock spleenworts, not a reachable species account.

Near sea level, below 10 m.

Florida

🔒 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.