Category: R
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Ray
One of the radiating branches of an umbel; (In Compositae/Asteraceae) the limb of a ray floret. In the sunflower family: the ligulate, or strap-shaped, marginal flowers on the head, as opposed to the central regular flowers. In the parsley family: one of the primary branches of an umbel or similar inflorescence. A pedicel within an…
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Raunkiaer’s system
System for categorising plants according how they survive the adverse (either cold or dry) season.
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Ratoon
Stem sprouting from the root of a cropped plant (as in sugarcane).
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Rapiform
(Of underground parts) shaped like a turnip, obovoid and rounded at the apex, tapering downwards.
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Raphides
(In anatomy) bundles of needle-shaped crystals of calcium oxalate.
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Rank
A vertical row on the axis. The order of values of a sample. A vertical row of leaves. Relative standing in a group, in education generally referring to the numerical order in which students rank by their GRADE point averages. In a graduating class, the highest-ranking student is the valedictorian and the second-highest is the…
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Ramuligerous
Bearing on little branches.
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Ramose
With many branches.
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Ramigerous
‘Bearing branches’, (of bracts) subtending the branches of the inflorescence.
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Ramiflory
Flowering and fruiting on thicker part of branches.