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AcroscopicFacing apically
ActinodromousWith three or more primary veins diverging radially from a single point at or above the base of the ...
ActinomorphicFlowers with radial symmetry and parts arranged at one level; with definite numbers of parts and siz...g-actinomorphic.png
ActinosteleA protostele having a xylem core in the form of radiating ribs, as viewed in transverse section
AcuminateGradually tapering to a sharp point, forming concave sides along the tip. (Compare with acute.)g-acuminate.png
AcuteTapering to a pointed apex with more or less straight sides, the sides coming together at an angle o...g-acute.png
AdaxialNext to the axis; facing the stem; ventralg-dorsal-ventral.png
AdherentWith unlike parts of organs joined, but only superficially and without actual histological continuit...
AdnateWith unlike parts or organs integrally fused to one another with histological continuity
AdpressedPressed closely to axis upward with angle of divergence 15 degrees or less
AdventitiousStructures or organs arising in a position that is unusual for their type, as roots originating on t...
Adventitious rootRoot arising from part of plant other than root; usually produced laterally on aerial stems.
AeratingVertical or horizontal aboveground roots.g-knee.png
AerialFibrous, adventitious roots, frequently with an adhesive disk; a crampon.
Aerial rootsRoots that grow above ground and are not covered by soil or water.
Aerial stemA prostrate to erect, above ground stem.
AerocaulousWith aerial stems
AerophyllousWith aerial leaves
AestivalAppearing in summer
AgamandrousInflorescence with neuter flowers inside or above and staminate outside or below (agamandrocephalous...g-agamandrous.png
AgamogynousInflorescence with neuter flowers inside or above and pistillate outside or below (agamogynecephalou...g-agamogynous.png
AgamohermaphroditicInflorescence with neuter flowers inside or above and hermaphroditic outside or below (agamohermaphr...g-agamohermaphroditic.png
AgamousWithout sex; sexual organs abortiveg-neuter.png
AgglomerateDense structures with varied angles of divergence
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