Quadrangular

Quadrangular [ Botany ]	Dictionary of botanic terminology - index of names
Adverb: Quadrangularly Noun: Quadrangularness, Quadrangle

In botany quadrangular describes a stem or other plant part having four angles in crosssection, and consequently four sides; tetragonal.

[ From Latin “quadrangulus" = "having four corners"]

Consequentially in a quadrangular stems the leaves and branches are opposite.

Subquadrangular = Less than completely quadrangular.

Left:

A quadrangular stem of
Astrophytum myriostigma forma quadricostata

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