Category: A
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Awn
A fine bristle ending an organ (usually in grass flowers). A terminal or lateral bristle on a seed or plant organ. A narrow, elongated appendage, usually at the tip of an achene. A bristle-like appendage. An elongate, stiff bristle often attached to the flowers of grasses. A projecting bristle found in a particular position on…
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Awl-shaped
Gradually tapering to a sharp thin point. Sharp pointed from a broader base.
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Available
In nomenclature, name(s) or epithet(s) that are legal for a taxon.
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Auxotelic
Parts of inflorescences that do not end in a flower, and that keep growing beyond the flowering region.
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Autotrophic
Obtaining its food from carbon dioxide, water and inorganic matter; neither parasitic nor saprophytic. An organism that can live on very simple carbon and nitrogen sources, such as carbon dioxide and ammonia. Obtaining food by photosynthesis from carbon dioxide, water and inorganic matter. In biology, organisms able to manufacture all of their own food, as…
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Autopolyploid
A polyploid with three or more sets of chromosomes, all from the same taxon. In genetics, an organism with more than two sets of chromosomes in its body cells, all derived from a single species.
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Autophyte
A plant not dependent on humus but forming its own food from carbon dioxide, water and inorganic matter [unusual term].
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Autophilous
Self-pollinating [unusual term].
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Autonym
(In nomenclature) the name that is automatically created for the group of taxa containing the type when another subgroup of the higher taxon is proposed (e.g. Senecio sect. Senecio).
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Autogamy
Self-fertilisation after pollinisation by pollen from the same individual.