Category: A
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Autogamous
Self-fertilisation, when ovules are fertilised after pollination by pollen from the same individual.
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Autochthonous
Of the species of a region, constituting the original flora, native. Native or endogenous microorganisms to an area, usually referring to soil microorganisms. Remaining at the site of formation. A blood clot that has not beet carried in the bloodstream from its point of origin is described as autochthonous. Found where developed, as in the…
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Autochory
Dispersal of seeds by the plant itself (e.g. by an explosive mechanism).
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Autocarp
Fruit produced by self-fertilisation [unusual term].
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Authority
The author of a plant name; cited as such after the plant name, often in a standard abbreviated form. The right to perform or command.
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Author citation
(In nomenclature) the indication of who first gave the taxon its name.
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Author
The writer of a book or paper, or (in nomenclature) the person who describes a new taxon. In politics, the member who introduces a bill in the house of its origin, sponsor.
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Autapomorphy
(In cladistics) a derived character or trait unique to an ingroup, and not present in the outgroup.
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Autapomorphic
(Of a character in cladistics) derived and unique to a given taxon or monophyletic group.
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Auriculate
Equipped with ear-like structures, usually near the base. Has a pair of rounded lobes that somewhat resemble the human ear. With ear-like structures, usually at the base of a leaf or petal.