Ctenanthe oppenheimiana
A clump-forming Brazilian prayer-plant relative that can exceed 1 m tall. Its long, narrow leaves, up to 40 cm, have dark green bands along the secondary veins and red-purple undersides; 'Tricolor' is the familiar variegated houseplant form. It is a warm, humid, shaded forest-floor plant that dislikes dry air, cold and hard water, like most Marantaceae.
Where it grows wild
It is a terrestrial herb of shaded, humid lowland and foothill forest in eastern Brazil. Herbarium records come mostly from the Atlantic Forest of Rio de Janeiro, São Paulo, EspÃrito Santo and the southern states, including wet restinga forest behind beaches on Ilha Grande and slope forest in the Tinguá reserve at about 675 m. It forms dense clumps from rhizomes on moist forest floors and along stream banks.
Brazilian records run from near sea level (restinga) up to about 700–750 m. Higher records, such as Bogotá at 2,600 m, are botanic-garden plants.
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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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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 CC BY-SA 4.0 licence, unmodified.