Deciduous

(Of tree or shrub) that sheds its leaves each year at the end of the period of growth

Deciduous

Shedding all its leaves before the emergence of next season's leaves

Decumbent

Reclining, the tips ascending

Dentate

Toothed with teeth directed outward

Digitate

With the members arising form one point like fingers

Dioecious

Bearing male and female flowers on different plants

Dissected

Divided into many narrow segments

Division

A form of propagation by splitting clumps of a plant, or by separating the rhizomes in a clump

Dormancy

A state of greatly reduced metabolism in which a plant or part of a plant is alive but not growing

Double

(Flowers) with more than the usual number of petals, often with the style and stamens changed to petals

Doubly serrate

Large teeth and small teeth alternating

Downy

Covered with soft hair or down