Glossary of Botanical Terms



 
- D -

 

DeciduousFalling away at the close of the growing period.
Decompound.  More than once-divided.
Decumbent.  Stems or brfanches in an inclined position, but the end ascending.
Decurrent.  Applied to the prolongation of an organ, or part of an organ running along the sides of another.
Deflexed.  Turned abruptly downward.
Dehiscence.  The opening of an ovary, anther-sac or sporange to emit the contents.
Dehiscent.  Opening to emit the contents.
Deltoid.  Broadly triangular, like the Greek letter Δ [delta].
Dentate.  Toothed, especially with outwardly projecting teeth.
Denticulate.  Diminutive of dentate.
Depauperate.  Impoverished, small.
Depressed.  Vertically flattened.
Dextrorse.  Spirally ascending to the right.
Diadelphous.  Stamens united into two sets.
Diandrous.  Having two stamens.
Dichotomous.  Forking regularly into two nearly equal branches or segments.
Dicotyledonous.  With two cotyledons.
Didymous.  Twin-like ; of two nearly equal segments.
Diffuse.  Loosely spreading.
Digitate.  Diverging, like the fingers spread.
Dimorphous.  Of two forms.
Dioecious.  Bearing staminate flowers or antherids on one plant, and pistillate flowers or archegones on another of the same species.
Discoid.  heads of Compositae composed only of tubular flowers, rayless ; like a disk.
Dissected.  Divided into many segments or lobes.
Dissepiment.  A partition-wall of an ovary or fruit.
Distichous.  Arranged in two rows.
Distinct.  Separate from each other ; evident.
Divaricate.  Diveraging at a wide angle.
Divided Cleft to the base or to the mid-nerve.
Dorsal
.  On the back, or pertaining to the back.
Drupaceous.  Drupe-like.
Drupe.  A simple fruit, usually indehiscent with fleshy exocarp and bony endocarp.
Drupelet.  Diminutive of drupe.


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Volume 1, page xviii: Nathanie1 L. Britton amd Addison Lord Brown,
An Illustrated Flora of the Northern United States, Canada, and the British Possessions from Newfoundland to the Parallel of the Southern Boundary of Virginia, and from the Atlantic Ocean Westward to the 102d Meridian, Charles Scribner's Sons, 1913

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