Tanacetum densum (Labill.) Sch.Bip., 48 1844. (syn: Chrysanthemum densum (Labill.) Steud.; Pyrethrum densum Labill.);
Asteraceae Week (Part II – Discoid heads) :: Tanacetum densum subsp. amani from Arizona::SC O1: : : Attachments (2). 1 post by 1 author.
This is Tanacetum densum subsp. amani taken from Flagstaff Arboretum, Arizona on 25th May, 2013.
This is a cultivated one which forms a dense carpet of beautiful silvery foliage topped with cluster of yellow button flowers in early summer. The plant is common in the south western arid and semi-arid zones of US. It can thrives in the hottest and sunniest places.