Category: O

Any definite part of a plant structure (e.g. a cell, a leaf). Any member of a plant—as a petal, stamen, leaf, branch, etc. A part of the body consisting of two or more tissues organized to perform a specific function. A part of the body which is distinct from other parts and has a particular…

(In nomenclature) a taxon below class and above family. A higher taxonomic rank composed of one to several families. In the classification of living things, a category above the family and below the class. In law, a formal, written directive from a judge, administrative officer, or other judicial officer, as in a case involving child…

(2-dimensional) flat with a circular outline; (More correctly) (3-dimensional) globose, in the shape of a sphere. Circular or nearly so. Circular in outline. Round in shape. This term is used to describe round muscles, like the eye’s orbicular muscle (orbicularis oculi) and the mouth’s orbicular muscles (orbicularis oris).  

The most advantageous condition(s) for an organism or function.  

Placed before a sepal.  

Placed before a petal.  

A lid or cover, as in the flower of Eucalyptus or in a circumscissile fruit.  

With a lid. Having a lid or plate-like opening at the top of the ascus, through which the spores are shot.  

From the Latin opere citato, ‘in the work cited before’.