Glossary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z home
Deciduous
Not persisting, falling away in less than one year.

Decumbent
Curved upward from a horizontal or inclined base, e.g. stems.

Deflexed
Turned downward abruptly.

Deltoid
Triangular in outline; shaped like the Greek letter delta.

Dense
Inflorescences having crowded spikelets.

Depauperate
Stunted.

Dermal
Having to do with the epidermis.

Dichotomous Key
A tool used in the identification of unknown plants by stating the conspicuous features by which the various taxa can be recognized. Two contrasting choices are presented at each step. One choice in the couplet is accepted and the other rejected, weaving a path to the indentity of the plant.

Diffuse
Open and much branched, widely spread.

Digitate
Parts (three or more) arising from the summit of a structure (e.g., branches of the Chloris inflorescence).

Dilated
Expanded, enlarged, or wider.

Dioecious
Unisexual, the staminate and pistillate flowers being on separate plants.

Disarticulate (disarticulation)
Separating at the nodes (joints) naturally at maturity.

Discoid
Resembling a disk or platter.

Distichous
Obviously 2-ranked and appearing as the rungs of a ladder.

Divergent
Extending away from each other by degrees.

Dorsal
Relating to the back of an organ, away from the axis; abaxial surface.