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dichasiiform |
= dichasium-like |
architecture |
capitulescence, inflorescence |
Resembling a dichasium, but not strictly such. |
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dichasium pl. dichasia |
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nominative |
inflorescence |
Determinate and falsely dichotomous with each axial segment bearing a sessile terminal flower and either a pair of opposite pedicellate lateral flowers or a pair of opposite lateral branches. See also cincinnus, cyme, cymule, helicoid cyme, monochasium, scorpioid cyme. |
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dichasium-like |
= dichasiiform |
architecture |
capitulescence, inflorescence |
Resembling a dichasium, but not strictly such. |
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dichlamydeous |
|
architecture |
flower |
Having a perianth differentiated into a distinct calyx (sepals) and corolla (petals). |
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dichogamous |
> protandrous, proterandrous, protogynous |
maturation |
bisexual flower |
Having the androecium and gynoecium becoming functionally mature at different times. |
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dichotomous |
|
architecture |
axis |
Branching by division of the apical meristem producing two coordinate but not necessarily equal derivatives from each division. |
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diclesium pl. diclesia |
< accessory fruit, anthocarp |
nominative |
fruit |
An achene enveloped by a persistent, free perianth base. |
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diclinous |
> dioecious, monoecious |
reproduction |
taxon |
Having all flowers functionally unisexual. See also monoclinous (synoecious). |
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didynamous |
|
architecture |
flower, androecium |
Diadelphous with two stamens in each set. See also tetradynamous. |
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diffuse |
|
architecture |
plant, stem |
Having branches remote and divergent to divaricate. |
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diffuse root |
> fibrous root |
STRUCTURE |
|
Any member of a dense system of adventitious, slender roots that arise from the base of a main stem and functionally replace an evanescent primary root. |
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diffuse-porous |
|
porosity |
|
Homogeneously porous, the vessels not differentially disposed by size or number. |
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diffuse-rooted |
> fibrous-rooted |
architecture |
plant |
Having a dense system of adventitious, slender roots that arise from the base of the main stem and functionally replace an evanescent primary root. See also taprooted. |
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digamous |
|
reproduction |
inflorescence |
Bearing flowers of two differing sexual constitutions; esp. in Asteraceae (Compositae). |
|
digitate |
= palmate |
architecture |
foliaceous structure |
Compound with one order of leaflets all inserted at a common point and diverging from one another; or lobed (cleft, divided, parted, segmented), incised or ribbed in a similar hand-like pattern. Unless qualified to indicate otherwise, this term usually is understood to mean "palmately once-compound." See also …palmate, palmatifid, palmatipinnate, ternate. |
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dilate(d) |
|
solid shape |
elongate structure |
Narrow at one end and broadening toward the other; esp. when essentially terete at the narrow proximal end and seemingly flattened distally, as some anther filaments. |
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dimidiate |
|
plane shape |
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Halved, figuratively; bilaterally asymmetric, nearly or wholly lacking one side as implicitly compared with some corresponding bilaterally symmetric structure, real or imagined. |
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dimidiate |
|
solid shape |
|
Halved, figuratively; bilaterally asymmetric, nearly or wholly lacking one side as implicitly compared with some corresponding bilaterally symmetric structure, real or imagined. |
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dioecious |
< diclinous |
reproduction |
taxon |
Having all flowers or spikelets functionally unisexual, each plant having only staminate or only pistillate types. See also monoecious. |
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diplecolobal |
|
arrangement |
cotyledons |
Incumbent but with the cotyledons folded together twice or more, the folds transverse. |
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diplostemonous |
|
architecture |
flower, androecium |
Having the stamens dicyclic, the proximal whorl with members directly above the sepals, the distal whorl with members directly above the petals. See also obdiplostemonous. |
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diplotegium pl. diplotegia |
|
nominative |
fruit |
A pyxis with accessory tissue adnate to the pericarp; derived from an inferior ovary. |
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disarticulating |
|
architecture |
axis |
Articulate(d) and with the main portions of the whole separating at the joints upon maturity or senescence. |
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disc 1 var. disk |
|
STRUCTURE |
|
Any distinct, annular to discoid structure produced from or borne upon a floral receptacle between or basal to any of the sets of floral organs; usually fleshy, often nectariferous. |
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disc 2 var. disk |
|
STRUCTURE |
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Collectively, the disc florets of a capitulum (head), or the surface presented by them. |
