Sonchus daltonii is a species of flowering plants of the family Asteraceae. The species is endemic to Cape Verde.Oromí, Martín, Zurita & Cabrera, 2005 : Lista preliminar de especies silvestres de Cabo Verde: Hongos, Plantas y Animales Terrestres. Gobierno de Canarias, Consejería de Medio Ambiente y Ordenación Territorial, p. 41 It is listed as endangered by the IUCN. The genus was named by Philip Barker Webb in 1849. Its local name is coroa-de-rei ("king's crown").Plantas endémicas e arvores indígenas de Cabo Verde
Distribution and ecology Sonchus daltonii occurs on the Capeverdean islands of Santo Antão, São Vicente, São Nicolau, Santiago and Fogo. It grows in humid and sub-humid zones, mainly between 800 and 1,800 metres elevation. It is used for grazing animals, and it is highly threatened by nomadic grazing.
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