Selaginella macrathera

A spikemoss of the Sierra Madre Occidental in Chihuahua and Sonora–Sinaloa, recorded at 950–2,000 m in a strongly seasonal climate with a long dry winter and spring and a July–September monsoon. It is probably a rock-dwelling, drought-tolerant species like other northern Mexican Selaginella, so bright light and wet–dry cycles are safer than a closed terrarium.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Dry airBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

Expects a seasonal restGrows on rock (lithophyte)

Where it grows wild

No habitat notes were found. Records are from canyon and slope country of the Sierra Madre Occidental (Barranca region), an area of oak and pine-oak woodland and rocky slopes, where Selaginella usually grows on rock faces and in crevices.

Recorded at 950–1,997 m, median 1,400 m (6 records).

Mexico

🔒 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.