compound umbel; compound umbellate inflorescence
Botanical term for an inflorescence where each primary ray of an umbel bears a secondary umbel (umbellet). Used in plant morphology descriptions.
The carrot flower is a compound umbel.
Plants of the Apiaceae family often have compound umbels.
散形花序 is a simple umbel, while 複散形花序 is a compound umbel where each ray bears a secondary umbel.
Compound of 複 (compound) + 散形花序 (umbel inflorescence). The term is a direct calque from Western botanical terminology.