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In page Protea cynaroides:

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Protea cynaroides is further placed within the subfamily Proteoideae, which is found mainly in Southern Africa. This subfamily is defined as those species having cluster roots, solitary ovules and indehiscent fruits. Proteoideae is further divided into four tribes: Conospermeae, Petrophileae, Proteae, and Leucadendreae.[2] The genus Protea, and hence P. cynaroides, is placed under the tribe Proteae.[citation needed]