Dodecatheon dentatum
Encyclopedia
Dodecatheon dentatum is a species of flowering plant in the primrose family
known by the common name white shooting star. It is native to the Pacific Northwest
in North America, including British Columbia
, Washington, Oregon
, and Idaho
.
This plant is a perennial herb growing to 40 or 50 centimeters in height. The leaves have pointed oval blades up to 10 centimeters long by 6 wide with wavy or toothed edges. Each is borne on a long, winged petiole
. The inflorescence
contains 1 to 11 or 12 flowers. It arises on a tall, erect flowering stalk. The flower corolla has five white lobes each 1 or 2 centimeters long. They are reflexed away from the flower's center, which contains one style
surrounded by large reddish, purplish or black anthers
containing pollen
.
This species is sometimes divided into subspecies. Two of these may be treated as separate species, Dodecatheon ellisiae, native to Arizona
and New Mexico
, and the pink-flowered Dodecatheon utahense, a Utah
endemic.
Primulaceae
Primulaceae is a family of flowering plants with about 24 genera, including some favorite garden plants and wildflowers. It is also known as the primrose family.- Genera :...
known by the common name white shooting star. It is native to the Pacific Northwest
Pacific Northwest
The Pacific Northwest is a region in northwestern North America, bounded by the Pacific Ocean to the west and, loosely, by the Rocky Mountains on the east. Definitions of the region vary and there is no commonly agreed upon boundary, even among Pacific Northwesterners. A common concept of the...
in North America, including 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...
, Washington, Oregon
Oregon
Oregon is a state in the Pacific Northwest region of the United States. It is located on the Pacific coast, with Washington to the north, California to the south, Nevada on the southeast and Idaho to the east. The Columbia and Snake rivers delineate much of Oregon's northern and eastern...
, and Idaho
Idaho
Idaho is a state in the Rocky Mountain area of the United States. The state's largest city and capital is Boise. Residents are called "Idahoans". Idaho was admitted to the Union on July 3, 1890, as the 43rd state....
.
This plant is a perennial herb growing to 40 or 50 centimeters in height. The leaves have pointed oval blades up to 10 centimeters long by 6 wide with wavy or toothed edges. Each is borne on a long, winged 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...
. 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...
contains 1 to 11 or 12 flowers. It arises on a tall, erect flowering stalk. The flower corolla has five white lobes each 1 or 2 centimeters long. They are reflexed away from the flower's center, which contains one style
Gynoecium
Gynoecium is most commonly used as a collective term for all carpels in a flower. A carpel is the ovule and seed producing reproductive organ in flowering plants. Carpels are derived from ovule-bearing leaves which evolved to form a closed structure containing the ovules...
surrounded by large reddish, purplish or black anthers
Stamen
The stamen is the pollen producing reproductive organ of a flower...
containing pollen
Pollen
Pollen is a fine to coarse powder containing the microgametophytes of seed plants, which produce the male gametes . Pollen grains have a hard coat that protects the sperm cells during the process of their movement from the stamens to the pistil of flowering plants or from the male cone to the...
.
This species is sometimes divided into subspecies. Two of these may be treated as separate species, Dodecatheon ellisiae, native to Arizona
Arizona
Arizona ; is a state located in the southwestern region of the United States. It is also part of the western United States and the mountain west. The capital and largest city is Phoenix...
and New Mexico
New Mexico
New Mexico is a state located in the southwest and western regions of the United States. New Mexico is also usually considered one of the Mountain States. With a population density of 16 per square mile, New Mexico is the sixth-most sparsely inhabited U.S...
, and the pink-flowered Dodecatheon utahense, a Utah
Utah
Utah is a state in the Western United States. It was the 45th state to join the Union, on January 4, 1896. Approximately 80% of Utah's 2,763,885 people live along the Wasatch Front, centering on Salt Lake City. This leaves vast expanses of the state nearly uninhabited, making the population the...
endemic.