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Term	Definition
Awn (awned)	The terminal extension of the midrib of an organ such as a bract (bearing awns).
Axile placentation	A type of ovule arrangement in which the ovules arise from placental tissue derived from the apices of the septa of a locule. In this type of placentation the apices of the septa are fused or in very close proximity to one another.
Axillary	Arising from an axil; for example, an axillary bud arising in the axil between the stem and the petiole.
Axillary bud	A bud that arises in a leaf axil. Same as lateral bud.
Axillary inflorescence	A inflorescence that arises from a leaf axil
Axillary inflorescence	An inflorescence that arises from a leaf axil
Baccate	Berrylike. See berry.
Ballistic dispersal	A type of dispersal in which seeds are ejected from the fruits upon dehiscence. Same as autochorous.
Banner	The upper, broad petal of Fabaceae. Same as standard, banner, and vexillum with standard the preferred term.
Barbate (diminutive = barbellate)	Bearded or tufted with hairs.
Bark	All tissue of the trunk and branches external to the vascular cambium.
Bark	The tissue of the trunk and branches external to the vascular cambium.
Bark fissured	Bark with distinct longitudinal grooves.
Bark not fissured	A bark that does not have conspicuous vertically oriented fissures.
Bark rough	Bark without fissures and scallops yet with very shallow irregular cracs and often shedding small pieces of bark.
Bark scalloped	A bark that peels in irregular plates that leave conspicuous depressions.
Bark slightly fissured	Bark with vertical fissures that are less than 5 mm deep.
Bark smooth	A bark without fissures, scallops, or roughness.
Basal	Toward the base. Opposite of apical. Same as proximal.
Basal aril	An aril located at the base of the seed.
Basal placentation	A type of placentation in which the ovules arise from the base of the locule.
Basal rosette	Referring to an arrangement of leaves radiating from the base of the stem and usually placed close to the ground.
Basal-lateral aril	An aril starting at the base and extending part way up the side of the seed.
Basidiomycetes	A type of fungus that produces its spores on club-shaped structures called basidia, including some of the more conspicuous fungi such as mushrooms, bracket fungi, and puffballs. Many basidiomycetes form mycorrhizal association with flowering plants.
Basifixed	Attached at the bottom or the base; e.g., the anthers of many plants.

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