Asplenium angustum

A South American spleenwort described by Swartz in 1817, recorded from Amazonian forests from Colombia and the Guianas to Bolivia and Brazil. It is a lowland rainforest fern that needs steady heat, shade and humidity.

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 in the ground

Where it grows wild

Lowland Amazonian rainforest; one published note gives an elevation of 210 m in the Amazon region. The microhabitat is not documented in the sources reached.

Records at 159–250 m (median 221 m); two climate sites are at 800–870 m in south-eastern Brazil.

BrazilColombiaVenezuelaGuyanaSurinameFrench GuianaEcuadorPeruBolivia

🔒 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.