Idahoa
Encyclopedia
Idahoa is a monotypic genus of plants in the mustard family
containing the single species Idahoa scapigera, which is known by the common names scalepod and oldstem idahoa. It is native to western North America from British Columbia
to California
to Montana
where it grows generally in mountains and foothills. This is a petite annual herb growing a basal rosette of petioled
leaves each one to three centimeters long and smooth or lobed along the edges. The thin, leafless erect stems rise to a maximum height near ten centimeters. Each bears a single tiny flower with white petals above red-purple sepal
s. The fruit is a flat, round capsule, shaped like a disc
or somewhat oval, and 6 to 12 millimeters wide. The green fruit dries to a papery gray or white.
Brassicaceae
Brassicaceae, a medium sized and economically important family of flowering plants , are informally known as the mustards, mustard flowers, the crucifers or the cabbage family....
containing the single species Idahoa scapigera, which is known by the common names scalepod and oldstem idahoa. It is native to western North America from British Columbia
British Columbia
British Columbia is the westernmost of Canada's provinces and is known for its natural beauty, as reflected in its Latin motto, Splendor sine occasu . Its name was chosen by Queen Victoria in 1858...
to California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...
to Montana
Montana
Montana is a state in the Western United States. The western third of Montana contains numerous mountain ranges. Smaller, "island ranges" are found in the central third of the state, for a total of 77 named ranges of the Rocky Mountains. This geographical fact is reflected in the state's name,...
where it grows generally in mountains and foothills. This is a petite annual herb growing a basal rosette of petioled
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...
leaves each one to three centimeters long and smooth or lobed along the edges. The thin, leafless erect stems rise to a maximum height near ten centimeters. Each bears a single tiny flower with white petals above red-purple 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. The fruit is a flat, round capsule, shaped like a disc
Disk (mathematics)
In geometry, a disk is the region in a plane bounded by a circle.A disk is said to be closed or open according to whether or not it contains the circle that constitutes its boundary...
or somewhat oval, and 6 to 12 millimeters wide. The green fruit dries to a papery gray or white.