nodding groundsel

Từ điển WordNet v3.1 - WordNet Dictionary

noun

plant with erect leafy stems bearing clusters of rayless yellow flower heads on bent individual stalks;
moist regions of southwestern United States
• Syn:
Senecio bigelovii
• Hypernyms:
wildflower, wild flower
• Member Holonyms:
Senecio, genus Senecio