Oxalis is a large genus of flowering plants in the wood-sorrel family Oxalidaceae, comprising over 550 species. The genus occurs throughout most of the world, except for the polar areas; species diversity is particularly rich in tropical Brazil, Mexico, and South Africa.
Acer macrophyllum, the bigleaf maple or Oregon maple, is a large deciduous tree in the genus Acer. It is native to western North America. In addition to uses by animals, it is of some culinary and woodworking interest.
Cornus nuttallii, the Pacific dogwood,western dogwood, or mountain dogwood, is a species of dogwood tree native to western North America. The tree's name used by Hul'q'umi'num'-speaking nations is Kwi’txulhp.
Marah oreganus, the Oregon manroot, coastal manroot or western wild-cucumber, is a common manroot of the northwest coast of the United States. It ranges from California north to Canada.
Berberis nervosa, commonly known as dwarf Oregon-grape, Cascade barberry, Cascade Oregon-grape, or dull Oregon-grape, is a flowering plant native to the northwest coast of North America from southern British Columbia south to central California, with an isolated population inland in northern Idaho. It is especially common in second growth, Douglas-fir or western redcedar forests, making use of those pools of sunlight that intermittently reach the ground.
Dicentra formosa is a flowering plant with fern-like leaves and an inflorescence of drooping pink, purple, yellow or cream flowers native to the Pacific Coast of North America.
Oxalis violacea, the violet wood-sorrel, is a perennial plant and herb in the family Oxalidaceae. It is native to the eastern and central United States.
Lilium columbianum is a lily native to western North America. It is also known as the Columbia lily, Columbia tiger lily, or simply tiger lily.
Oxalis stricta, called the common yellow woodsorrel, common yellow oxalis, upright yellow-sorrel, lemon clover, or more ambiguously and informally "sourgrass", "sheep weed", or "pickle plant", is a herbaceous plant native to North America, parts of Eurasia, and a rare introduction in Britain. It tends to grow in woodlands, meadows, and in disturbed areas as both a perennial and annual. Erect when young, this plant later becomes decumbent as it lies down, and branches regularly. It is not to be confused with similar plants in the same genus which are also often referred to as "yellow woodsorrel".
Gaultheria ovatifolia is a species of shrub in the heath family which is known by the common names western teaberry, Oregon spicy wintergreen, and slender wintergreen. It is native to western North America from British Columbia to California, where it grows in high mountain forests.
Arnica cordifolia is a species of arnica in the sunflower family, known by the common name heartleaf arnica. It is native to western North America.
Balsamorhiza sagittata is a North American species of flowering plant in the tribe Heliantheae of the family Asteraceae known by the common name Arrowleaf Balsamroot. Also sometimes called Oregon sunflower, it is widespread across western Canada and much of the western United States.
Oxalis tetraphylla is a bulbous herbaceous perennial plant from Mexico. It is sometimes sold as lucky clover or shamrock. In the wild or feral state it is often called four-leaved wood-sorrel after its family, Oxalidaceae. Other English common names for this plant include Lucky Clover, Four-Leaf Sorrel, Four-Leaf Pink-Sorrel and others. It is sometimes called "the iron cross plant" or "oxalis iron cross" because the leaves loosely resemble the iron cross symbol, though this name is not a classic folk term and has fallen out of favour due to the bad political connotations associated with this symbol.
Rosa pisocarpa is a species of rose known by the common name cluster rose or swamp rose. It is native to western North America from British Columbia to northern California, where it generally grows in moist habitats. It is a shrub sometimes forming a thicket, and growing up to 2.5 meters tall. The stems can be dark red or blackish and are often studded with straight, paired prickles at nodes. The leaves are each made up of several toothed oval leaflets, the terminal leaflet up to 4 centimeters long. The inflorescence is a cyme of up to 10 flowers with pink petals each up to 2 centimeters in length. The fruit is a rose hip about a centimeter wide. The hips are pear- or egg-shaped and borne in clusters, and are decorative in fall and early winter, when they are red or reddish-purple and contrast with yellow foliage. Fall foliage can be yellow or dark red.
Micranthes oregana is a species of flowering plant known by the common name Oregon saxifrage. It is native to western North America, including the mountainous regions of the western United States. It can be found in moist habitat, such as marshes and other wetlands. It is a perennial herb growing from a thick, fleshy or woody caudex. It produces a basal rosette of linear to lance-shaped leaves each up to 25 centimeters long. The inflorescence arises on a stout peduncle which may exceed a meter in height. It is topped with one or more dense clusters of white-petaled flowers.
Sidalcea oregana is a species of flowering plant in the mallow family known by the common name Oregon checkerbloom.
Oxalis articulata, known as pink-sorrel, pink wood sorrel, windowbox wood-sorrel, Chari amilo (Nepal),sourgrass,Netho (khatta) saag (India) is a perennial plant species in the genus Oxalis native to temperate South America. It has been introduced in Europe in gardens and is now naturalized in these areas.
Circaea alpina, commonly called alpine enchanter's nightshade or small enchanter's nightshade, is a 10–30 cm tall perennial herb found in cool forests of the Northern Hemisphere.
Micranthes occidentalis, commonly known as western saxifrage, is a species of flowering plant native to North America.
Bolandra oregana is a species of flowering plant in the saxifrage family. It is commonly known as Oregon bolandra or northern false coolwort and is endemic to Idaho, Washington and Oregon. It is a perennial herb which grows up to 2 ft (0.61 m) tall. It is distributed along the Columbia River Gorge as well as the Snake River and its tributaries. It grows around moist, mossy rocks and riparian habitats.
