Crested-poppy
StarArgemone platyceras
Synonyms: Argemone mexicana var. aculeatissima
Western Herbalism Properties
Traditional Uses
In Mexican folk medicine, Argemone platyceras is used chiefly for nervous and mental complaints, being taken for 'los nervios' and 'el ansia' (anxiety), as well as for diabetes and for cough, bronchitis and pneumonia (Bye & Linares; Aguilar et al.). This calming reputation is supported by species-specific pharmacology: alkaloids from the aerial parts produced antidepressant- and anxiolytic-like effects in mice (Cassani et al., 2025), and isoquercitrin isolated from A. platyceras inhibited carbachol- and leukotriene D4-induced contraction in guinea-pig airways (PubMed 16202993). Owing to its sanguinarine and related alkaloids the plant is toxic and is used cautiously.
Gallery
Botanical Description
Argemone platyceras, the crested or Mexican prickly poppy ('chicalote'), is an annual or short-lived perennial herb of the poppy family (Papaveraceae). Its stout, prickly, blue-green stems and deeply lobed, spiny, white-veined leaves exude a yellow latex when cut. The large, showy flowers have crinkled, papery white (sometimes lavender-tinged) petals surrounding a dense boss of yellow stamens; the prickly capsule splits to release many small seeds. The species is native to Mexico, distributed widely through the central highlands (Tlaxcala, Puebla, State of Mexico and beyond), growing in disturbed ground, fields, roadsides and dry open slopes. Like other Argemone, it contains toxic isoquinoline alkaloids (sanguinarine, berberine, protopine) and should be regarded as poisonous.
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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