Glossary


Deciduous
Marked leaflessness in winter, and greater than 90% leaves lost by beginning of spring flush.
Deciduous Fuchsia excorticata
Decrescent
Diminishing.
Decumbent
With a prostrate or curved base and an erect or ascending tip.
Tetragonia tetragonioides
Decurrent
Attached by a broadened base.
Decurrent leaves of Dacrycarpus dacrydioides (kahikatea) Decurrent leaves of Dacrycarpus dacrydioides (kahikatea)
Decurved
Curved downward.
Deflexed
Bent abruptly downward.
Leaves of Pseudopanax ferox bent abruptly downwards
Dehiscence
The time of opening at maturity to release the contents, e.g., a capsule releasing the seeds.
Capsule of Phormium tenax (flax) releasing seed
Dehiscent
Splitting open at maturity to release contents (of a fruit).
Deltoid
Shaped broadly like an equilateral triangle.
Dentate
Toothed along the margin with the teeth pointing outward, not forward.
Dentate fronds of Dicksonia fibrosa Illustration of dentate leaf edge
Denticles
minute teeth
Denticles on the leaf margin of Lepidium flexicaule
Denticulate
having a very finely toothed margin
Dichotomous
Divided into two equal branches.
The two equal branches of Lygodium articulatum
Digitiform
Finger-like.
Dioecious
Having male and female flowers on separate plants of the same species.
Female flowers of Coprosma arboreus Male flowers of Coprosma arboreus Dioecious flowers of Pittosporum crassifolium
Diploid
With two complete sets of chromosomes in each cell.
Disarticulating
Separating at a joint.
Discoid
Disc-shaped.
Disc-shapes in the flower of Dysoxylum spectabile
Disjunct
A species or other taxonomic group that occupies areas that are widely separated and scattered and therefore have a discontinuous distribution.
Distal
Toward the apex, away from the point of attachment (cf. proximal).
Distal leaves of Sophora chathamica Distal leaves of Sticherus flabellatus
Distichous
In two rows on opposite sides of the axis.
Two rows of leaves on Prumnopitys taxifolia (matai)
Divaricating
Branching at a very wide angle with stiff intertwined stems.
Divaricating stems of juvenile Pennantia corymbosa.
Domatia
small structures on the lower surface of a leaf in some woody dicotyledons, located in the axils of the primary veins and usually consisting of depressions partly enclosed by leaf tissue or hairs.
Domatia on the underside of the leaf of Coprosma grandifolia Domatia on the underside of the leaf of Elaeocarpus dentatus (hinau)
Dorsal
Of the back or outer surface relative to the axis. (cf. ventral)
Drupe
A stone fruit, the seed enclosed in a bony covering (endocarp) which is surrounded by a + fleshy layer (mesocarp)
A drupe of Hedycarya arbor (pigeon wood)

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