Definitions for "Serotinous"
Appearing or blossoming later in the season than is customary with allied species.
Cones that remain closed on the tree for several months or a year or more after maturity.
late developing or late ripening of fruits (such as cones of black spruce trees).
Keywords:  drier, summer, latter, heat, relating
of or relating to the latter and usually drier part of the summer; responsive to heat