Heterotheca inuloides
StarHeterotheca inuloides
Western Herbalism Properties
Traditional Uses
Heterotheca inuloides is one of the most widely used medicinal plants of Mexican folk medicine, where it serves as the principal substitute for European arnica (Arnica montana). Flower-head and whole-plant decoctions and tinctures are applied externally to bruises, sprains, contusions, muscle pain, and slow-healing wounds, and sometimes taken internally for inflammatory complaints. The species is included in the Mexican Pharmacopoeia, and pharmacological investigation has confirmed anti-inflammatory and analgesic activity attributable to cadinane sesquiterpenes (Argueta, 1994; Delgado, 2001; Rocha, 2002).
Botanical Description
Heterotheca inuloides, known as árnica mexicana or false arnica, is a perennial herb of the Asteraceae native to the highlands of central and southern Mexico, growing 30-80 cm tall on open slopes, roadsides, and disturbed ground from 1500 to 2800 m elevation. The erect, branched stems are softly hairy and arise from a stout woody base. Leaves are alternate, sessile or short-petiolate, lanceolate to oblong, 3-10 cm long, with entire to shallowly toothed margins and a rough, glandular-pubescent texture that releases a characteristic aromatic, slightly resinous scent when crushed. Numerous flower heads are produced in loose corymbs at the stem tips; each head is 2-3 cm across with bright golden-yellow ray florets surrounding a darker yellow disc, reminiscent of European arnica. The involucral bracts are arranged in several overlapping series and are glandular. The achenes are pubescent and topped by a tawny pappus of capillary bristles.
This information is for educational purposes only and is not intended to replace professional medical advice. Always consult a qualified healthcare provider before using any herbal remedy, especially if you are pregnant, nursing, or taking medications.
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