Tanacetum kelleri (Kryl. & Plotn.) Takht.

Evergreen plant 40-70 cm when flowering. Rhizome creeping. Flowering stems solitary or few, sparsely leafy. Leaves silver-grey pubescent. Basal leaves long-petiolate up to 20-25 cm x 6-7 cm, with oblong entire blade, margin smooth. Stem leaves few (3-7), short-petiolate with lyrate-pinnatisect blade. Flower head 4-5 cm diam., 1-6 per stem, stalk up to 20 cm. Flowers white, corolla 2 cm. V - early spring until frost. Fl - June-July for more than month. Fr - August. P - by division and seed. Requires a sunny place and well-drained soil. Very attractive species for the flower bed and for the rock garden. Z 5 (4). New.

Siberia (southern regions of Altay). On dry rocky slopes.