Hymenoxys rusbyi

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Hymenoxys rusbyi
Scientific classification
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H. rusbyi
Binomial name
Hymenoxys rusbyi
Synonyms[1]
  • Actinella rusbyi A.Gray 1883
  • Picradenia rusbyi (A.Gray) Greene

Hymenoxys rusbyi is a North American species of flowering plant in the daisy family known by the common names Rusby's rubberweed or Rusby's bitterweed. It has been found only in the states of Arizona and New Mexico in the southwestern United States.[2][3]

Hymenoxys rusbyi grows in open areas, generally at the edges of pine-oak forests at elevations of 1500–2500 meters (5000–8300 feet). It is a perennial herb up to 150 cm (5 feet) tall. One plant can produce sometimes as many as 250 flower heads in a branching, flat-topped array. Each head has 6–8 yellow ray flowers and 25–50 tiny yellow disc flowers.[4][5]

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