Utricularia tenuissima
A tiny annual terrestrial bladderwort, the only member of section Martinia. It grows in wet, open, sandy savannas and on seepy sandstone outcrops across northern South America, from sea level to about 2,100 m, and bears lilac-violet flowers with a yellow palate. At home it needs full-sun-level light, permanently wet sand and warmth, and fresh seed each year, because the plants do not persist.
Where it grows wild
It grows in open, wet savanna on sand: seasonally flooded 'tabuleiro' grassland, wet sandy ground at water edges, veredas, and shallow pools and seeps with sand on sandstone outcrops, for example at Chiribiquete, Araracuara and Serra do Aracá. It is often red-tinged and only 1–3 cm tall. Fine traps in the wet sand catch soil micro-organisms.
Wikipedia gives sea level to 2,100 m. GBIF specimens are mostly 100–800 m, with sandstone plateau records at 1,000–1,400 m.
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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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