Eriophyllum tanacetiflorumGreene, syn of var. tanacetiflorum
Bahia trifidaNutt., syn of var. trifidum
Eriophyllum trifidum(Nutt.) Rydb., syn of var. trifidum
Eriophyllum confertiflorum, commonly called golden yarrow or yellow yarrow,[2] is a North American species of plant in the family Asteraceae, native to California and Baja California. It has wooly leaves when young, and yellow flower heads.[3]"Eriophyllum" means "wooly leaved."[3][4]
Eriophyllum confertiflorum grows in large clumps or stands of many erect stems often exceeding 50cm (20in) in height. Botanist Nancy Dale describes the growth pattern as "tidy".[3]Leaves are alternate.[3] Leaves and stems are whitish when young, because of being covered in wooly white hairs, then become greenish to gray-green.[3] Leaves have 3-5 deep lobes.[3] Yellow flowers are crowded in the head, which is up to 3⁄8 inch (0.95cm) across, flat-topped, with both disc flowers and ray flowers.[3]"Confertiflorum" means densely flowered.[3] It blooms from January to July.[3] The fruit is an achene with a very short pappus. The top of each stem forms an inflorescence of up to 30 flower heads, each bright golden yellow head with a large center of disc florets and usually a fringe of rounded to oval ray florets.[2]
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