Ruellia brevifolia (Pohl) C. Ezcurra, Darwiniana 29: 278 1989. (syn: Cyrtacanthus corymbosus Mart. ex Nees; Echinacanthus dichotomus Kuntze; Ruellia graecizans Backer; Ruellia longifolia (Pohl) Griseb.; Ruellia serratitheca Rusby; Ruellia ventricosa Kunth; Stephanophysum brevifolium Pohl; Stephanophysum longifolium Pohl; Stephanophysum macrandrum Bremek.; Stephanophysum ventricosum Nees);
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S. Tropical America: Argentina Northeast, Argentina Northwest, Bolivia, Brazil North, Brazil South, Brazil Southeast, Brazil West-Central, Colombia, Ecuador, Paraguay, Peru; Introduced into: El Salvador, Fiji, Gulf of Guinea Is., Hawaii, Leeward Is., Mauritius, Pakistan, Réunion as per POWO;
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SK 3443 30 April 2022: 6 very high res. images.
Habit : Cultivated
I think looks different from images at Ruellia elegans
This is an neotropical bird-pollinated Ruellia but I can’t identify which from the photo. You could contact Erin A. Manzitto-Tripp, who might be able to name it.
From where? Prob R brevifolia
It is from Eden Project, Cornwall, UK
I guess Ruellia brevifolia (Pohl) C.Ezcurra is a perfect match.
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References:
POWO Catalogue of Life The Plant List Ver.1.1 IBIS Flora