Pseudostellaria oxyphylla

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Pseudostellaria oxyphylla
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Core eudicots
Order: Caryophyllales
Family: Caryophyllaceae
Genus: Pseudostellaria
Species:P. oxyphylla
Binomial name
Pseudostellaria oxyphylla
(B.L. Rob.) R.L. Hartm. & Rabeler
Synonyms

Stellaria oxyphyllaB.L. Rob.

Pseudostellaria oxyphylla, the robust starwort [1] or Robinson's starwort, is a rare plant species endemic to Idaho, known only from Kootenai and Shoshone Counties. It grows along streambanks in conifer forests at elevations of 800–900 m. [2]

Idaho State of the United States of America

Idaho is a state in the northwestern region of the United States. It borders the state of Montana to the east and northeast, Wyoming to the east, Nevada and Utah to the south, and Washington and Oregon to the west. To the north, it shares a small portion of the Canadian border with the province of British Columbia. With a population of approximately 1.7 million and an area of 83,569 square miles (216,440 km2), Idaho is the 14th largest, the 12th least populous and the 7th least densely populated of the 50 U.S. states. The state's capital and largest city is Boise.

Kootenai County, Idaho County in the United States

Kootenai County is a county located in the U.S. state of Idaho. As of the 2010 census, the population was 138,494, making it the third-most populous county in Idaho. The county seat and largest city is Coeur d'Alene. The county was established in 1864 and named after the Kootenai tribe.

Shoshone County, Idaho County in the United States

Shoshone County is a county in the U.S. state of Idaho. As of the 2010 census, the population was 12,765. The county seat is Wallace, and the largest city is Kellogg. The county was established in 1864, named for the Native American Shoshone tribe.

Pseudostellaria oxyphylla is an annual herb with fibrous roots. Stems are 4-angled, up to 30 cm long, with a thin line of hairs along one side. Leaves are narrow, up to 12 cm long. Flowers have green sepals and white petals. [2] [3] [4] [5]

Fibrous root system

A fibrous root system is the opposite of a taproot system. It is usually formed by thin, moderately branching roots growing from the stem. A fibrous root system is universal in monocotyledonous plants and ferns. The fibrous root systems look like a mat made out of roots when the tree has reached full maturity.

Related Research Articles

Caryophyllaceae family of plants

Caryophyllaceae, commonly called the pink family or carnation family, is a family of flowering plants. It is included in the dicotyledon order Caryophyllales in the APG III system, alongside 33 other families, including Amaranthaceae, Cactaceae, and Polygonaceae. It is a large family, with 81 genera and about 2,625 known species.

<i>Stellaria</i> genus of plants

Stellaria is a genus of about 90-120 species flowering plants in the family Caryophyllaceae, with a cosmopolitan distribution. Common names include starwort, stitchwort and chickweed.

<i>Saponaria officinalis</i> species of plant

Saponaria officinalis is a common perennial plant from the carnation family (Caryophyllaceae). This plant has many common names, including common soapwort, bouncing-bet, crow soap, wild sweet William, and soapweed. There are about 20 species of soapworts altogether.

<i>Moenchia erecta</i> species of plant

Moenchia erecta, erect chickweed or upright chickweed, is a small annual plant in the family Caryophyllaceae. It can grow to over 10 cm in height, but it is usually smaller. It has blue-green glaucous leaves, and small, delicate white flowers. The sepals are longer than the petals, green and bordered in white. The plant is a common pasture weed native to Europe. It has been introduced elsewhere, including Australia and western North America, but it is not particularly invasive or competitive.

<i>Allium anceps</i> species of plant

Allium anceps, known as twinleaf onion and Kellogg's onion, is a species of wild onion native to the western United States. It is widespread in Nevada, extending into adjacent parts of California, Idaho, and Oregon. It grows in barren clay and rocky soils.

<i>Stellaria graminea</i> species of plant

Stellaria graminea is a species of flowering plant in the Caryophyllaceae family known by the common names common starwort, grass-leaved stitchwort, lesser stitchwort and grass-like starwort.

<i>Sagina</i> genus of plants

Sagina is a genus of 20–30 species of flowering plants in the pink or carnation family, Caryophyllaceae. These are flowering herbs native to temperate regions of the Northern Hemisphere extending south to tropical mountain areas at high altitudes, reaching just south of the equator in Africa. They are small annual or perennial herbaceous plants, growing to 5–15 cm. The leaves are opposite, often in tight whorl-like clusters, simple linear, typically 5–20 mm long. The flowers are solitary or in small cymes, with four or five green sepals and an equal number of white petals; the petal size relative to the sepal size is useful in species identification. The fruit is a small capsule containing several seeds.

<i>Caltha leptosepala</i> species of plant

Caltha leptosepala, the white marsh marigold, twinflowered marsh marigold, or broadleaved marsh marigold, is a species of flowering plant in the buttercup family. It is native to western North America from Alaska to New Mexico, where it grows in wet mountain habitats in alpine and subalpine regions. There are two general wild types of this species, one native to the interior and one that grows along the Pacific coast and coastal mountains, but these are not always treated separately.

<i>Cirsium scariosum</i> species of plant

Cirsium scariosum is a species of thistle known by the common names meadow thistle, elk thistle and dwarf thistle. It is native to much of western North America from Alberta and British Columbia south to Baja California. There are also isolated populations on the Canadian Atlantic Coast, on the Mingan Archipelago in Québec.

<i>Pseudostellaria jamesiana</i> species of plant

Pseudostellaria jamesiana is a species of flowering plant in the pink family known by the common names tuber starwort and sticky starwort. It is native to much of the western United States, where it can be found in sagebrush, coniferous forests, and many other types of habitat. It is a perennial herb growing from a rhizome network with tuberlike swellings. The stem grows up to 45 to 60 centimeters in maximum height. It is four-angled and usually at least partially coated in glandular hairs. The thick lance-shaped leaves are up to 15 centimeters long, oppositely arranged, and sometimes rough and hairy. The inflorescence is a cluster of flowers at the tip of the stem or in the leaf axils. Flowers occurring in leaf axils are sometimes cleistogamous, never opening. Open flowers have five white petals with two lobes at the tips and usually ten long stamens.

<i>Pseudostellaria sierrae</i> species of plant

Pseudostellaria sierrae is a species of flowering plant in the pink family known by the common name Sierra starwort.

<i>Pseudostellaria</i> genus of plants

Pseudostellaria is a genus of flowering plants in the pink family. There are up to 20 species, most of which occur in Asia. They are similar to Stellaria, differing in the morphology of the roots and fruit capsules and having shallower notches in the petals.

Stellaria crispa is a species of flowering plant in the pink family known by the common names curled starwort and crisp starwort. It is native to western North America from Alaska south to California and Wyoming, where it grows in moist, shady habitat such as deep forests and streambanks. It is a rhizomatous perennial herb producing a mat of prostrate or trailing stems up to about 40 centimeters long. It is lined with opposite pairs of pointed oval leaves each 1 to 2 centimeters long. Single flowers occur in the leaf axils, each borne on a short pedicel. The flower has five pointed green sepals each a few millimeters long. Some flowers have one or more petals, but most lack these.

<i>Stellaria longifolia</i> species of plant

Stellaria longifolia is a species of flowering plant in the pink family known by the common name longleaf starwort. It is native to much of the northern half of the Northern Hemisphere, occurring throughout northern Europe and North America. It grows in many types of moist habitat, including meadows, marshes, and roadsides. It is a rhizomatous perennial herb forming clumps with sprawling, branching stems which are mostly hairless except for tiny rough hairs along the edges of the squarish stem. The linear to lance-shaped leaves are up to 3.5 centimeters long and are oppositely arranged in pairs. The inflorescence bears several flowers, each on a short pedicel. The flower has five pointed green sepals each a few millimeters long. There are five white petals, each so deeply lobed it appears to be two.

<i>Stellaria longipes</i> species of plant

Stellaria longipes is a species of flowering plant in the pink family known by the common names longstalk starwort and Goldie's starwort. It has a circumpolar distribution, occurring throughout the northernmost latitudes of the Northern Hemisphere. It grows in a wide variety of habitat types, including tundra and taiga and many areas farther south with subalpine and alpine climates. It is extremely variable in morphology, its form depending on both genetic makeup and environmental conditions. It has a widely varying number of chromosomes. In general, it is a rhizomatous perennial herb forming mats or clumps, or growing erect. The stems may be short and simple or with sprawling and highly branched. The linear to lance-shaped leaves are usually 1 to 4 centimeters long and are oppositely arranged in pairs. The inflorescence bears one or more flowers, each on a short pedicel. The flower has five pointed green sepals each a few millimeters long. There are five white petals each divided into two lobes, sometimes shallowly, but often so deeply there appear to be two petals. The plant is gynodioecious, with some flowers having functional male and female reproductive parts and others being only female.

<i>Stellaria obtusa</i> species of plant

Stellaria obtusa is a species of flowering plant in the pink family known by the common names Rocky Mountain chickweed, blunt-sepaled starwort, and obtuse starwort. It is native to western North America, from British Columbia and Alberta to California to Colorado, where it grows in moist areas in forests and on mountain slopes.

Stellaria umbellata is a species of flowering plant in the pink family known by the common names umbrella starwort and umbellate starwort. It is native to western North America from Alaska and northwestern Canada to the southwestern United States, as well as parts of Asia, including Siberia. It grows in subalpine and alpine climates in mountain forests and riverbanks. It is a rhizomatous perennial herb producing a slender prostrate stem up to about 20 centimeters long, sometimes forming clumps or mats. The stem is lined with pairs of oval leaves each up to about 2 centimeters long. The inflorescence is an umbel-shaped array of several flowers each on an arching or erect pedicels. The flower has five pointed green sepals each no more than 3 millimeters long. There are occasionally tiny white petals within the calyx of sepals, but these are generally absent.

<i>Illecebrum</i> species of plant

Illecebrum is a monotypic genus in the family Caryophyllaceae. It contains the single species Illecebrum verticillatum, which is a trailing annual plant native to Europe, with whorls of small white flowers borne in the axils of the paired leaves.

Boykinia intermedia is a plant species native to northwestern Oregon and eastern Washington. Some publications reported the species from northern Idaho as well, but these citations appear to have been based in misidentified specimens. The species grows in forests, on stream banks and lake sides at elevations up to 700 m.

Allium douglasii, the Douglas onion, is a plant species native to northeastern Oregon, eastern Washington, and northern Idaho. It grows in shallow soils at elevations of 400–1,300 m (1,300–4,300 ft).

References