Calochortus excavatus
Encyclopedia
Calochortus excavatus is a species of flowering plant in the lily family
known by the common name Inyo County star-tulip. It is endemic to California
, where it is known from several reduced and threatened populations in Mono
and Inyo Counties
. It occupies grassy habitat in alkaline scrub alongside Atriplex
and other playa
flora. The main threat to its existence is loss of local groundwater
. This is a perennial
herb
growing a slender, unbranched stem to about 30 centimeters in maximum height. The inflorescence
bears 1 to 6 erect bell-shaped flowers in a close cluster. Each flower has three sepal
s which lack spotting and three white petal
s. The petals may have green striping on their outer surfaces and generally have a red-purple blotch at the base. The anther
s are reddish or purple.
Liliaceae
The Liliaceae, or the lily family, is a family of monocotyledons in the order Liliales. Plants in this family have linear leaves, mostly with parallel veins but with several having net venation , and flower arranged in threes. Several have bulbs, while others have rhizomes...
known by the common name Inyo County star-tulip. It is endemic 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...
, where it is known from several reduced and threatened populations in Mono
Mono County, California
Mono County is a county located in the east central portion of the U.S. state of California, to the east of the Sierra Nevada between Yosemite National Park and Nevada. As of the 2010 census, the population was 14,202, up from 12,853 at the 2000 census...
and Inyo Counties
Inyo County, California
-National protected areas:* Death Valley National Park * Inyo National Forest * Manzanar National Historic Site-Major highways:* U.S. Route 6* U.S. Route 395* State Route 127* State Route 136* State Route 168* State Route 178...
. It occupies grassy habitat in alkaline scrub alongside Atriplex
Atriplex
Atriplex is a plant genus of 100-200 species, known by the common names of saltbush and orache . The genus is quite variable and widely distributed. It includes many desert and seashore plants and halophytes, as well as plants of moist environments...
and other playa
Dry lake
Dry lakes are ephemeral lakebeds, or a remnant of an endorheic lake. Such flats consist of fine-grained sediments infused with alkali salts. Dry lakes are also referred to as alkali flats, sabkhas, playas or mud flats...
flora. The main threat to its existence is loss of local groundwater
Groundwater
Groundwater is water located beneath the ground surface in soil pore spaces and in the fractures of rock formations. A unit of rock or an unconsolidated deposit is called an aquifer when it can yield a usable quantity of water. The depth at which soil pore spaces or fractures and voids in rock...
. This is a perennial
Perennial plant
A perennial plant or simply perennial is a plant that lives for more than two years. The term is often used to differentiate a plant from shorter lived annuals and biennials. The term is sometimes misused by commercial gardeners or horticulturalists to describe only herbaceous perennials...
herb
Herbaceous plant
A herbaceous plant is a plant that has leaves and stems that die down at the end of the growing season to the soil level. They have no persistent woody stem above ground...
growing a slender, unbranched stem to about 30 centimeters in maximum height. 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...
bears 1 to 6 erect bell-shaped flowers in a close cluster. Each flower has three 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 which lack spotting and three white petal
Petal
Petals are modified leaves that surround the reproductive parts of flowers. They often are brightly colored or unusually shaped to attract pollinators. Together, all of the petals of a flower are called a corolla. Petals are usually accompanied by another set of special leaves called sepals lying...
s. The petals may have green striping on their outer surfaces and generally have a red-purple blotch at the base. The anther
Stamen
The stamen is the pollen producing reproductive organ of a flower...
s are reddish or purple.