Iris

iris, (genus Iris), genus of about 300 species of plants in the family Iridaceae, including some of the world’s most popular and varied garden flowers. The diversity of the genus is centred in the north temperate zone, though some of its most handsome species are native to the Mediterranean and central Asian areas. The iris is (arguably) the fleur-de-lis of the French royalist standard. It is a popular subject of Japanese flower arrangement, and it is also the source of orrisroot, from which “essence of violet” perfume is made.

Biological Description

The flowers commonly possess three sepals, three petals, and three broad pollen-receptive stigma branches, under which the pollen-producing anthers are hidden. Of the six petal-like floral segments in irises, the more erect inner ones are called standards and the usually drooping outer ones are called falls. These flower parts are located above the ovary (inferior ovary), which consists of three carpels unified into a single pistil. Ovules within the ovary portion become seeds, and the ovary matures into dry capsule fruits.

Identifying Species

The aim is to classify iris flowers among three species (Setosa, Versicolor, or Virginica) from sepals’ and petals’ length and width measurements.

Analysis

It was found that Setosa had the highest average Sepal width as well as the smallest average Sepal length and Petal width. Virginica was found to have the largest average Sepal Length. Versicolor fell in the middle of every average distribution.

Graphical Summaries Versicolor has an average Sepal length is in between Setosa and Virginica. Virginica has the greatest variation with more upper quartile outlyers. Setosa has the samllest Sepal lengths.