Anemone oregana
Encyclopedia
Anemone oregana is a species of flowering plant in the buttercup
Ranunculaceae
Ranunculaceae are a family of about 1700 species of flowering plants in about 60 genera, distributed worldwide....

 family known by the common names blue windflower, Oregon anemone, and western wood anemone. It is native to the forests of the west coast of the United States. This is a perennial herb growing from a thick rhizome
Rhizome
In botany and dendrology, a rhizome is a characteristically horizontal stem of a plant that is usually found underground, often sending out roots and shoots from its nodes...

 to a maximum height of 25 to 30 centimeters. There is usually a single basal leaf made up of three large leaflets on a long petiole
Petiole (botany)
In botany, the petiole is the stalk attaching the leaf blade to the stem. The petiole usually has the same internal structure as the stem. Outgrowths appearing on each side of the petiole are called stipules. Leaves lacking a petiole are called sessile, or clasping when they partly surround the...

. There are sometimes more leaves along the mostly naked stem. The inflorescence
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Strictly, it is the part of the shoot of seed plants where flowers are formed and which is accordingly modified...

 has three leaflike bracts and a single flower. The flower has no petals but 5 to 7 petal-like sepal
Sepal
A sepal is a part of the flower of angiosperms . Collectively the sepals form the calyx, which is the outermost whorl of parts that form a flower. Usually green, sepals have the typical function of protecting the petals when the flower is in bud...

s in any of several colors, usually blue or purple but sometimes reddish, pink, white, or bicolored. In the center of the flower are up to 75 thin stamen
Stamen
The stamen is the pollen producing reproductive organ of a flower...

s. The fruit is a cluster of achene
Achene
An achene is a type of simple dry fruit produced by many species of flowering plants. Achenes are monocarpellate and indehiscent...

s.

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