Nasa macrophylla
Image: Markus Ackermann (cc-by-nc)
NameNasa macrophylla
Scientific NameNasa macrophylla (Poepp. & Endl.) Weigend
Common NamesOrtiga Brava, Giant Stinging Nettle (Andean)
Plant FamilyLoasaceae
Natural HabitatNative to the Andean regions of South America (e.g., Peru, Bolivia, Ecuador), growing in montane forests, cloud forests, and disturbed areas like roadsides at higher elevations.
Parts Usedleaf,whole_plant
Medicinal Actionsanalgesic,anti-inflammatory
Traditional UsesTraditionally used by indigenous Andean communities as a counter-irritant for rheumatic pain, arthritis, and muscle aches. The stinging hairs are deliberately applied to the skin to induce a localized inflammatory response, which is believed to alleviate deeper pain.
Active ConstituentsHistamine, Acetylcholine, Serotonin, Flavonoids, Phenolic compounds
Preparation Methodspoultice,infusion
Contraindications & WarningsDirect skin contact causes severe irritation, redness, swelling, and pain due to stinging hairs. Avoid use on broken skin, by pregnant or breastfeeding women, young children, or individuals with sensitive skin or allergies. Internal use is generally not recommended without expert supervision.
Cultivation NotesPrefers well-drained soil and a warm, humid climate typical of its Andean montane habitat. Requires careful handling with protective gear due to its potent stinging hairs. Can be propagated from seed.
Rarityuncommon
Description
A robust, tall herbaceous plant native to the Andes, characterized by large, deeply lobed leaves covered in potent stinging hairs. It produces distinctive orange or reddish-orange flowers, often with spiky structures, arranged in terminal or axillary inflorescences.
