Variety traits

Iris flower diameter

Iris L.

An important morphological trait used for the classification and variety testing of irises, defined as the diameter of the circle formed by the falls (lower perianth segments).

In the reference 5 varieties crop Iris, where this is mentioned in the description.

The measurement of iris flower diameter is conducted in a natural, non-flattened state by placing a ruler beneath the flower, using the stem as a reference point. Measurement results are recorded in centimeters and serve as a reliable marker for varietal distinctness in professional variety testing.

The values of this trait vary depending on the iris class: from 5–5.7 cm in miniature dwarf bearded irises to 15–19 cm in certain Japanese iris cultivars. Flower size is directly related to ornamental value and genetic characteristics, including tetraploidy, although intensive selection for increased diameter may affect plant resistance to environmental conditions.

General information about the subject — on the page Flower diameter.

Sources8

Varieties of Iris mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.