dictyoxide
A diterpenoid derived from the brown alga Dictyota with IUPAC name 1R,2S,6R,10S)-3,7-dimethyl-10-(6-methylhept-5-en-2-yl)-11-oxatricyclo[5.3.1.0^(2,6)]undec-3-ene.

didymo
A species of diatom, Didymosphenia geminata, best known as widely invasive algae.

didymocarpoid
Any flowering plant of the genus Didymocarpus

didymocarpoids
plural of didymocarpoid

dieback
The browning and death of a plant shoot starting at the tip, due to either disease or climate conditions.
The withering of a plant, especially the cyclical withering in autumn and winter; distal parts die off but core parts stay alive (and semidormant or dormant).

diebacks
plural of dieback

digitalis
Any plant of the genus Digitalis (herbaceous plants of the Plantaginaceae family, including the foxglove, Digitalis purpurea).
A medical extract of Digitalis purpurea prescribed for heart failure etc.

digitalises
third-person singular simple present indicative of digitalise

dihydroquercetin
The chromenone (2R,3R)-2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-2,3-dihydrochromen-4-one

dikamali
The shrub Gardenia resinifera.

dillweed
Dill, an aromatic herb used in cooking and medicine; Anethum graveolens.
A contemptible person; a fool.

dillweeds
plural of dillweed

dimorphism
The occurrence within a plant of two distinct forms of any part.
The occurrence in an animal species of two distinct types of individual.
A property of certain substances that enables them to exist in two distinct crystalline forms.

dimorphisms
plural of dimorphism

diospyros
Any tree of the genus Diospyros.

diospyroses
plural of diospyros

disfix
A subtractive morpheme, that is, a morpheme which manifests itself through elision (the removal of segments from a root or stem).

disfixes
plural of disfix

disseminule
A seed fruit that has been modified for migration.

disseminules
plural of disseminule

dissophyte
In phytogeography, a plant of which the subterranean parts are adapted to mesophytic or even hydrophytic conditions, and the aerial parts to xerophytic conditions.

dissophytes
plural of dissophyte

doddard
A frail old man.

doddards
plural of doddard

dogbane
Any plant in the genus Apocynum, eponymous of the dogbane family Apocynaceae.

dogoyaro
neem (tree)

dogoyaros
plural of dogoyaro

dogsbane
Alternative spelling of dogbane.

dogsbanes
plural of dogsbane.

dogstail
Any perennial grass of the genus Cynosurus, native to the Mediterranean basin, grown for fodder

dogstails
plural of dogstail

dogtail
Buddleja asiatica, a deciduous shrub of the East Indies.

dogweed
Any plant of the genus Adenophyllum.

dolastane
Any of a group of diterpenes present in some brown algae

dolastanes
plural of dolastane

domatia
plural of domatium

domatium
A chamber produced by a plant in which insects, mites, or fungi live.

dondakaya
ivy gourd

doob
Doob grass.

doobs
plural of doob

doornboom
Vachellia horrida, a low, spreading East African shrub or tree with large thorns.

doornbooms
plural of doornboom

dottard
An old, decayed tree.

dottards
plural of dottard

doum
The doum palm.

doums
plural of doum

doveplum
The plant Coccoloba diversifolia.

doveplums
plural of doveplum

dracocephalum
Any plant of the genus Dracocephalum, the dragonheads.

dracocephalums
plural of dracocephalum

dragonhead
Any plant of the genus Dracocephalum.
Dracocephalum moldavica, type species of the genus.

dragonheads
plural of dragonhead

dragonmouth
A purple-flowered herb, Horminum pyrenaicum, native to the Alps and Pyrenees.

driedoorn
Rhigozum trichotomum, a southern African shrub.

driedoring
Synonym of driedoorn.

driftweed
Seaweed brought ashore by the wind or tide.

driftweeds
plural of driftweed

dronkgras
A plant poisonous to livestock, including:
A plant poisonous to livestock, including:

dronkgrass
Alternative form of dronkgras.

droserone
The plant naphthoquinone derivative 4,8-dihydroxy-3-methylnaphthalene-1,2-dione that inhibits some virus infections

drumbledore
Alternative form of dumbledore.

drumbledores
plural of drumbledore

dubbeltjie
Tribulus zeyheri, a species of plant known for its sharp thorns.
Tribulus terrestris, a species of plant known for its sharp thorns.

dubbeltjies
plural of dubbeltjie

dumbledor
Alternative spelling of dumbledore.

dumbledores
plural of dumbledore

dumbledors
plural of dumbledor

dumortierninoside
Any of a group of triterpenoid saponins present in the cactus Isolatocereus dumortieri

dumortierninosides
plural of dumortierninoside

dunchi
Alternative form of dhaincha.

dunegrass
The plant Swallenia alexandrae.

duodecimo
A size of paper, so called because it is originally made by folding and cutting a single sheet from a printing press into 12 leaves; (5 by 7¾ inches): 6.5 to 7.5 inches high, approximately 4.5 inches wide.
A sheet or page of that size.
A book having pages of that size.

duodecimos
plural of duodecimo

durva
Alternative form of doob (“type of grass”).

dustymaiden
A flowering plant of the genus Chaenactis, native to western North America.

dyewood
Any wood from which colouring matter is extracted for dyeing.

dysphania
Any amaranthaceous plant of the genus Dysphania.

eadish
Alternative form of eddish.

eadishes
plural of eadish

earhead
The grain-bearing tip of the stem of a cereal plant.

earheads
plural of earhead

earlet
Small earring.
Earring.

earlets
plural of earlet

earlywood
Wood formed in a tree relatively early in the season.

earlywoods
plural of earlywood

earshoot
A shoot that develops from an ear of grain

earshoots
plural of earshoot

earthpea
Any of a species of pea, Amphicarpaea bracteata, a climbing leguminous plant with hairy underground pods.
A pea
A peanut, (Arachis hypogaea).

earthpeas
plural of earthpea

eckol
phlorotannin from Lessoniaceae brown algae.

eckols
plural of eckol

eclipta
Any asteraceous flowering plant of the genus Eclipta.

ectendomycorrhiza
A form of ectomycorrhiza in which hyphae may also penetrate the plant cells

ectendomycorrhizas
plural of ectendomycorrhiza

ectexine
Synonym of sexine.

ectexines
plural of ectexine

ectoaperture
The softest part of a pollen grain where the layer of ectexine is thinest

ectoapertures
plural of ectoaperture

ectocarpene
A pheromone found in several species of brown algae (Phaeophyceae).

ectocarpoid
Any brown alga of the order Ectocarpales

ectocarpoids
plural of ectocarpoid

ectocolpi
plural of ectocolpus

ectocolpus
A groove on the surface of a pollen grain

ectomycorrhiza
A form of mycorrhiza consisting of a sheath of fungus around the root tips of the symbiotic plant.

ectomycorrhizae
plural of ectomycorrhiza

ectomycorrhizas
plural of ectomycorrhiza

ectophyte
Any plant that lives as a parasite on the surface of another organism

ectophytes
plural of ectophyte

ectorhizosphere
The outermost part of a rhizosphere

ectorhizospheres
plural of ectorhizosphere

edaphophyte
any plant that grows with its roots in the soil and shoots in the air

edaphophytes
plural of edaphophyte

eddish
An aftergrowth of grass (or other plants) which grows after it has been mowed; also, a field of such growth.

eddishes
plural of eddish

eddo
A plant (Colocasia esculenta, but often identified as Colocasia antiquorum, among numerous other synonyms), which is usually considered a variety of C. esculenta, with edible starchy tubers.
The tubers of this plant.

eddoe
Alternative spelling of eddo.

eddoes
plural of eddoe

eddos
plural of eddo

edgrew
Alternative form of edgrow.

edgrow
Aftergrass; eddish.

edgrowth
Synonym of edgrow (“aftergrass, eddish”).

edish
Alternative form of eddish.

edishes
plural of edish

eelgrass
Any of several species of aquatic plant, with very long and narrow leaves
Any of several species of aquatic plant, with very long and narrow leaves
Any of several species of aquatic plant, with very long and narrow leaves

effiguration
A lobe protruding from an effigurate flower.