| Name | Structure/ Category | Description |
|---|---|---|
| Diadelphous | of stamens united by the filaments into two fascicles | |
| Diaphragmed | [Pith] {type} | Uninterrupted by cavities but with regularly spaced partitions of denser tissue. |
| Dichotomous | dividing into two parts or groups | |
| Dimorphic | having two forms | |
| Dioecious | [Plants] {distribution of gender} | Having functionally unisexual (i.e. separate male and female) flowers or cones, which are borne on different plants within the species; thus some plants are male and others are female. |
| Disarticulation | As the spikelets of grasses become mature, their floral scales (whether glumes and/or lemmas) become separated from their stems and fall to the ground. When the glumes (the lowermost scales) persist on their stems while the lemmas fall to the ground, this is referred to as 'disarticulation above the glumes.' When both glumes and lemmas separate from their stems and fall to the ground, this is referred to as 'disarticulation below the glumes.' | |
| Disciform | of round or oval shape | |
| Discoid | relating to or having a disk as a of a composite floret situated in the floral disk being a disk floret of a composite flower head > having only tubular florets | |
| Discoidal | [Leaf lower surface, Leaf upper surface] {color variegation} | A single large spot of color in the center of another. |
| Disk | the central portion of the flower head of a typical composite composed of closely packed tubular flowers |
