Category: A
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Allantoid
Sausage-shaped (mostly used in mycology).
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Alkaloids
Organic basic nitrogenous compounds with physiological action, found in plants. Naturally occurring organic bases which have pharmacological actions. Many are found in plant foods, including potatoes and tomatoes (the Solarium alkaloids), or as the products of fungal action (e.g. ergot), although they also occur in animal foods (e.g. tetrodotoxin in puffer fish, tetramine in shellfish).…
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Aliferous
Equipped with wings [unusual term, not recommended].
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Alien
Plants not native, but introduced and (becoming) established in the wild. These plants originate from other countries, having been introduced either intentionally or accidentally. Their establishment or naturalization may vary.
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Alete
(Of spore wall) without apertures.
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Albuminous
With albumen, the nutritive substance in the seed. Furnished with albumen. To resembling, or containing albumin.
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Albumen
Storage tissues accompanying the embryo (endosperm and perisperm) [antiquated term]. The watery jelly that surrounds the yolk of an egg is a protein called albumen, a form of which is also abundant in human blood. When heated, egg albumen turns white, a transformation that is suggested by the origin of the word itself: albumen derives…
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Alate
Winged; as the seeds of the ash.
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Alar flower
A flower borne in the fork of two branches of a dichasium [unusual term].
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Alae (singular ala)
Wings, lateral petals; especially of flowers in Leguminosae/Fabaceae subfamily Papilionoideae.