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Plant Characteristics

A list of specialist words which might be used in field guides ... more.

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O

Obconical : Conical, but attached at the narrower end.
Parent Term:Shape__3d
Difficulty Level:
 
Oblanceolate : As lanceolate, but broadest part is beyond the middle of the longer axis.
Parent Term:Leaf_blade_shape
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Oblate : Almost circular but wider than long.
Parent Term:Leaf_blade_shape
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Oblique : Having an asymmetrical base.
Parent Term:Leaf_base
Difficulty Level:
 
Oblong : Leaf roughly broadest in middle with almost parallel sides, c. 1.5-2 times as long as wide (narrowly or broadly oblong or even squ
Parent Term:Leaf_blade_shape
Difficulty Level:
 
Obovate : As OVATE, but broadest beyond middle; c1.2-3x as long as wide.
Parent Term:Leaf_blade_shape
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Obscure : Not visible, or not at all clear; if unspecified, then it means here not visible with naked eye (or spectacles if needed) at arm?s
Parent Term:Venation
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Obtuse : Flat-ended or almost so (apex or base).
Parent Term:Apex_of_leaf_blade
Difficulty Level:
 
Ochrea ocrea :   -
Parent Term:Node
Child Terms: Ocreolate
Difficulty Level:
 
Ocreate : With an ochrea
Parent Term:Node
Difficulty Level:
 
Ocreolate : Diminutive of ocreate; usually applied to bract bases.
Parent Term:Ochrea
Difficulty Level:
 
Opaque : 'Murky'; not possible to see through, and letting little light through.
Parent Term:Transparency
Difficulty Level:
 
Opposite leaf :   -
Parent Term:Leaf_arrangement
Difficulty Level:
 
Orbicular : A flat shape, circular in outline.
Parent Term:Leaf_blade_shape
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Osseous : Bony.
Parent Term:Texture
Difficulty Level:
 
Outline of leaf blade :   -
Parent Term:Lamina__leaf_blade
Child Terms: Apex_of_leaf_blade
Leaf_base
Leaf_blade_shapes
Show examples »
 
Ovary : The basal part of the gynoecium containing the ovules.
Parent Term:Gynoecium
Child Terms: Bilocular
Inferior_ovary
Ovule
Superior_ovary
Locule
Locules_(count)
Difficulty Level:
Show examples »
 
Ovate : Leaf with outline (roughly) of egg and broadest below middle. Strictly, 2 -1.5 times as long as broad. "Broadly ovate" leaves can h
Parent Term:Leaf_blade_shape
Difficulty Level:
 
Ovoid : Egg-shaped (three dimensional) structure.
Parent Term:Shape__3d
Difficulty Level:
 
Ovule : Organ (inside the ovary in Angiosperms, open in Gymnosperms) that develops into the seed after fertilization.
Parent Term:Ovary
Plural:Ovules
Difficulty Level: