[rayless goldenrod] n (1923): a shrubby to herbaceous composite plant (Haplopappus heterophyllus syn. Isocoma wrightii) esp. of open saline ground from Texas to Arizona and northern Mexico that lacks ray flowers and causes trembles in cattle
RAYLESS GOLDENROD
Meaning of RAYLESS GOLDENROD in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012