Isocoma menziesii is a species of flowering plant in the family Asteraceae, known by the common name Menzies' goldenbush.
It is native to California, Baja California, and Baja California Sur, where it grows in coastal and inland habitat such as chaparral, particularly in sandy soils.Nesom, G.L. 1991. Taxonomy of Isocoma (Compositae: Astereae). Phytologia 70(2): 69–114 includes distribution map on page 72
Description Isocoma menziesii is a subshrub forming a matted bush reaching heights of . The erect branching stems may be hairless to woolly, are generally glandular, and vary in color from gray-green to reddish brown.
The leaves are oval-shaped to somewhat rectangular, gray-green and sometimes hairy and glandular, and long with stumpy teeth along the edges.
The abundant inflorescences are clusters of thick flower heads. Each head is a capsule with layers of thick, pointed, greenish phyllaries. The head is filled with large, protruding, cylindrical yellow disc florets with long stigmas.
Varieties Isocoma menziesii var. decumbens (Greene) G.L.Nesom – far northern Baja California, San Diego County, Channel Islands Isocoma menziesii var. diabolica G. L. Nesom – Santa Clara + San Benito Counties Isocoma menziesii var. menziesii – Baja California, Baja California Sur, San Diego County, Orange County, western Riverside County, Channel Islands Isocoma menziesii var. sedoides (Greene) G.L.Nesom – from Orange to San Luis Obispo Counties including Channel Islands Isocoma menziesii var. tridentata (Greene) G.L.Nesom – southern Baja California including Isla Cedros, northern Baja California Sur Isocoma menziesii var. vernonioides (Nutt.) G.L.Nesom – from Monterey County to northern Baja California
References
External links
Jepson Manual Treatment of Isocoma menziesii Isocoma menziesii — Calphotos Photos gallery, University of California