Selaginella coarctata

Selaginella coarctata is a lowland spikemoss of the Guiana Shield and western Amazon in Colombia, Venezuela, Guyana and northern Brazil. It is an upright terrestrial herb up to about 40 cm with dark green leaves that are whitish beneath. It grows in terra firme forest, low forest on white sand and around rock outcrops, and needs warm, humid shade.

At home, aim for

Day Warm-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Very humid airBand in Plantistry

Light ShadeDLI and PPFD in Plantistry

No rest periodGrows in the ground

Where it grows wild

Collections come from terra firme forest, low open forest on white sand, varillal and shrub savanna with dense understory, and rock outcrops of the Guiana Shield at Chiribiquete and the Macarena region.

Colombian flora data give 100–700 m; recorded elevations run 35–1,600 m, median 350 m.

ColombiaVenezuelaBrazilGuyana

🔒 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.