资料来源 : pyDict

晚熟的,晚夏的,在秋季开的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Serotinous \Se*rot"i*nous\, a. [L. serotinus, fr. serus late.]
   (Biol.)
   Appearing or blossoming later in the season than is customary
   with allied species.