Chemotaxonomy of the peppergrass Lepidium coronopus (L.) Al-Shehbaz (syn. Coronopus squamatus) based on its volatile glucosinolate autolysis products
The genus Lepidium comprises approximately 175 different plant species commonly referred to as peppergrasses or pepperworts ( Al-Shehbaz, 1997 and Mummenhoff et al., 2001), which occur worldwide apart from the polar regions where they are considered rare in the Arctic and are absent from Antarctica. Lepidium is a comparatively large genus belonging to the mustard family Brassicaceae. Lepidium coronopus (L.) Al-Shehbaz, a representative of the genus, is a herbaceous annual to biennial plant that belongs to the tribe Lepidieae and has previously been described by the following synonymous species: Coronopus squamatus (Forsskal) Ascherson; C. squamatus subsp. conradi (Muschler) Maire; C. squamatus subsp. eu-verrucarius Maire; Coronopus procumbens Cesati & al.; Coronopus ruellii All.; Coronopus verrucarius Muschler & Thell; Lepidospartum squamatum Forsskål; Senebiera coronopus (L.) Poiret; and Cochlearia coronopus L.
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