Isocoma acradenia

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Isocoma acradenia

Scientific classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order: Asterales
Family: Asteraceae
Tribe: Astereae
Genus: Isocoma
Species: I. acradenia
Binomial name
Isocoma acradenia
(Greene) Greene
Synonyms
  • Bigelowia acradenia Greene
  • Haplopappus acradenia (Greene) S.F.Blake

Isocoma acradenia is a species of flowering plant in the daisy family known by the common name alkali goldenbush. It is native to the southwestern United States and Baja California, where it grows in dry, sandy areas, particularly mineral-rich areas such as alkali flats and gypsum soils. This is a bushy or scraggly subshrub reaching maximum heights of just over a meter. It produces erect, branching stems which are a shiny pale yellowish white, aging to a yellow-gray. Along the tough, hard-surfaced stems are linear or oval-shaped glandular leaves 1 to 6 centimeters long, sometimes with stumpy teeth along the edges. They are gray-green and age to pale gray or tan. The inflorescences along the top parts of the stem branches are clusters of four or five flower heads. Each head is a capsule encased in bumpy, glandular greenish phyllaries bearing many golden yellow disc florets at its mouth. Each disc floret is somewhat cylindrical and protruding. The fruit is an achene a few millimeters long with a yellowish pappus adding an additional few millimeters.

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