In the aquarium literature Nomaphila stricta is regarded as a synonym of Hygrophila corymbosa, a marsh plant occurring across large parts of South-East Asia.1 Botanically, however, the name is assigned to Justicia stricta, whose taxonomic placement is considered unresolved.2 Nurseries use the name for, among others, the narrow-leaved form H. corymbosa 'Stricta'.3
The fast-growing stem plant manages with moderate light; strong lighting, however, makes the shoots markedly sturdier and more compact.1 A nutrient-rich substrate or fertiliser promotes growth but is not essential: it also thrives in gravel or washed sand.1 After planting, nursery stock grown emersed usually sheds its aerial leaves, but the submersed shoots reliably grow back.1
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