Selaginella cinerascens
Mesa spikemoss is a small, mat-forming spikemoss from San Diego County and Baja California. It forms a grey-brown carpet of forking stems up to 18 cm long that turn green when moist. It grows on dry clay soils in the open and in shrub shade, in a Mediterranean climate with a long dry summer, so it is not a humid-terrarium plant like tropical Selaginella.
Where it grows wild
It grows in arid scrub, often on clay soils such as those of coastal mesas, both in the open and in the shade of larger shrubs. It forms a dull-coloured carpet over the soil that dries out and goes dormant in the dry season.
No elevation data were found; its known sites are coastal mesas and low hills of southern San Diego County and Baja California.
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The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:
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More Selaginella
Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app. Photo from Wikimedia Commons, used under its CC0 licence, unmodified.