Category: A
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Ament
A slender, often pendulous, cylindrical inflorescence with crowded (sub-)sessile unisexual apetalous flowers, falling as a whole after fruiting; also (preferably) called a catkin. A person lacking in intelligence; a mentally retarded person, amentia.
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Ambiguous
In nomenclature, a name or epithet used in more than one interpretation, so it may indicate more than one taxon. To have several meanings or interpretations. In anatomy, being difficult to classify.
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Amber
(Colour) brownish yellow; (substance) fossil plant resin; semi-fossilised resin is known as copal.
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Alveolate
Pitted like a honeycomb; similar to fove(ol)ate, but with the depressions angled rather than round. Resembles the surface of a honeycomb.
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Altitude
Used to specify the height above sea-level.
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Alternisepalous
(Of petals) alternating with the sepals.
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Alternipinnate
Of leaflets of pinnate leaves, when they are not opposite.
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Alternipetalous
Alternating with the petals.
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Alternative
In nomenclature, two or more different names or epithets, based on the same type, published by the same author(s) at the same time for the same taxon; such names are not validly published. In drug education, assuming that there are motives for drug use, such as the need to be accepted by a group, many…
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Alternate
Inserted at different levels of the axis; as distinct from opposite. Arranged singly at different heights and on different sides of the stem—as in alternate leaves. Borne singly and spaced around and along the axis, applied to leaves or other organs on an axis. Leaves or buds arising first on one side of the stem…