Perennial herb to 30 cm tall with woody stolons, hairy. Basal leaves to 7 cm long, entire to divided, leaflets in 3s, grey-green. Stem leaves smaller, toothed to entire. Capitula solitary, to 4 cm across; summer. Ray florets white. Disk florets yellow. Achenes 10-ribbed. [Chrysanthemum maresii (Coss.) Ball var. hosmariense Ball, Leucanthemum hosmariense (Ball) Font Quer]

Morocco

 

R. gayanum (Coss. & Durieu) H.E. Wilcox, K. Bremer & Humphries, from Morocco and Algeria is similar but the leaves are greenish, the involucral bracts are pointed rather than rounded at the apex and the ray florets are usually pink. [Pyrethrum gayanum Coss. & Durieu, Chrysanthemum gayanum Ball, Leucanthemum gayanum (Coss. & Durieu) Maire]

Source: Lawson, L.; Spencer, R. (2002). Dahlia. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 4. Flowering plants. Dicotyledons. Part 3. The identification of garden and cultivated plants. University of New South Wales Press.