Glossary of Horticulture Terms
A, B, C, D, E-G, H-L, M-O, P, Q-R, S, T, U-Z
|
| Deciduous |
Said of leaves or stipules which do not
persist in a green condition throughout the winter; usually
falling in the autumn. |
| Decompound |
Repeatedly compound. |
| Decumbent |
Reclining on the ground with the tip ascending. |
| Decurrent |
Continued down the stem in a ridge or wing,
as applied to leaf-bases. |
| Defoliation |
Casting off or falling off of leaves. |
| Dehiscent |
Opening to discharge the seeds or pollen. |
| Deliquescent |
Breaking up into fine branches. |
| Deltoid |
Triangular, with equal sides. |
| Dense |
Crowded together, thick, compact. |
| Dentate |
Having marginal teeth whose apices are perpendicular
to the margin and do not point forward. |
| Denticulate |
Finely dentate. |
| Denuded |
Naked through the loss of covering. |
| Depressed |
Flattened, as if compressed somewhat. |
| Determinate |
Said of an inflorescence when the terminal
flower opens first and the prolongation of the axis is
thereby arrested. |
| Di- |
A prefix indicating two. |
| Diaphragmed |
Said of pith which is solid with transverse
bars of denser tissue at intervals between the nodes (tulip
tree) or at the nodes (grape). |
| Dichotomous |
Forked in pairs. |
| Dicot |
A plant of the angiosperm group having two
cotyledons. |
| Diffuse |
Loosely or widely spreading, an open form. |
| Digitate |
Spreading like the fingers, the leaflets
leaving the petiole at one point as applied to compound
leaves. The same as palmate. |
| Dimorphic |
Having two forms. |
| Dingy |
Neither white nor brighly colored, as applied
to pubescence. |
| Dioecious |
A species having unisexual flowers, each
sex confined to a separate plant. |
| Disarticulating |
Falling away by abscission, leaving a clean
cut scar, as with most leaves, many flowers, some twig
tips, etc. |
| Discoid |
The same as chambered, when applied to pith. |
| Disk |
An enlarge tip, as applied to tendrils. |
| Disk flower |
The tubular flower in the center of the
usual Compositae inflorescence. |
| Dissected |
Divided in narrow, slender segments. |
| Distal |
Toward the apex, away from the base. |
| Distichous |
Two ranked. |
| Diurnal |
Blossoms opening only during the day. |
| Divaricate |
Spreading very wide apart. |
| Divergent |
The same as spreading. |
| Divided |
Deeply lobed when applied to leaves; separated
to the base into divisions. |
| Doubly serrate |
Serrations bearing minute teeth on the margins. |
| Dorsal |
Of or on the back or outer surface of a
leaf, etc. |
| Downy |
Pubescent with soft short straight hairs. |
| Drupe |
A stone fruit (cherry, plum, peach). Many
berry-like fruits are technically small drupes, like huckleberry. |
