Oxalis or is a large genus of flowering plants in the wood-sorrel family Oxalidaceae, comprising about 570 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.
Oxalis corniculata, the creeping woodsorrel, also called procumbent yellow sorrel or sleeping beauty, resembles the common yellow woodsorrel, Oxalis stricta. It is a somewhat delicate-appearing, low-growing, herbaceous plant in the family Oxalidaceae.
Trifolium aureum, known by the various common names large hop trefoil, large trefoil, large hop clover, golden clover or hop clover, is a species of clover native to much of Eurasia.
Trifolium campestre, commonly known as hop trefoil, field clover and low hop clover, is a species of clover native to Europe and western Asia, growing in dry, sandy grassland habitats, fields, woodland margins, roadsides, wastelands and cultivated land. The species name campestre means "of the fields".
Oxalis pes-caprae is a species of tristylous flowering plant in the wood sorrel family Oxalidaceae. Oxalis cernua is a less common synonym for this species.
Yellow woodsorrel may refer to any member of the woodsorrel genus (Oxalis) with yellow flowers, but especially:
Trifolium dubium, the lesser trefoil, suckling clover, little hop clover or lesser hop trefoil, is a flowering plant in the pea and clover family Fabaceae. This species is generally accepted as the primary plant to represent the traditional Irish shamrock.
Oxalis stricta, called the common yellow woodsorrel, common yellow oxalis, upright yellow-sorrel, lemon clover, or more ambiguously and informally "sourgrass" or "pickle plant", is a herbaceous plant native to North America, parts of Eurasia, and has 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".
Aristida purpurea is a species of grass native to North America which is known by the common name purple three-awn.
Clarkia purpurea is a species of wildflower known by the common names winecup clarkia, winecup fairyfan, and purple clarkia.
Oxalis albicans, commonly known as radishroot woodsorrel, is North American species of perennial herbs in the woodsorrel family. It is widespread in Mexico and the southwestern United States.
Linaria purpurea is a species of flowering plant in the plantain family known by the common name purple toadflax. It is native to Italy, but it can be found growing wild as an introduced species in parts of western North America, including California, western Washington, and British Columbia, and it is cultivated as an ornamental plant. It is a perennial herb growing 30 to 70 centimeters tall with linear leaves 2 to 5 centimeters in length. The inflorescence is a raceme of flowers occupying the top of the stem. The flower is between 1 and 2 centimeters long with five lobes arranged into two lips with a spur at the end. The flower is usually light to medium purple in color. This plant is poisonous to livestock, the larvae of some species of Lepidoptera use this plant as a food source.
Monardella purpurea is a species of flowering plant in the mint family known by the common names Siskiyou monardella and serpentine monardella.
Oxalis incarnata is a species of flowering plant in the woodsorrel family known by the common names pale pink-sorrel and crimson woodsorrel. It is native to southern Africa, but it can be found on other continents where it is an introduced species, often the descendant of garden escapees. It is grown and kept as an ornamental plant. This is a perennial herb growing from a system of rhizomes and bulbs. The branching, hairless stem grows to nearly 30 centimeters in maximum length. There may be small bulblets located along the stem above ground. The leaves are borne on long petioles in erect bunches, each leaf made up of three leaflets. The solitary flower arises on a peduncle. Each flower has five white to light pink petals.
Oxalis latifolia is a species of flowering plant in the woodsorrel family known by the common names garden pink-sorrel and broadleaf woodsorrel. It is native to Mexico and parts of Central and South America.
Oxalis rubra is a species of flowering plant in the woodsorrel family known by the common name red woodsorrel and windowbox woodsorrel. It is sometimes considered a subspecies of Oxalis articulata. It is native to Argentina, Brazil, and Uruguay, but it is widely cultivated as an ornamental plant and can sometimes be found growing in the wild as a garden escapee. This is a perennial herb growing from a woody rhizome. There is generally no stem, the leaves arising on long petioles from ground level. Each leaf is made up of three leaflets which can vary in shape but are often heart-shaped. The inflorescence is a loose array of white to purple-pink flowers.
Oxalis suksdorfii is a species of flowering plant in the woodsorrel family known by the common name western yellow woodsorrel and Suksdorf's woodsorrel. It is native to the west coast of the United States from Washington to northern California, where it can be found in open and wooded habitat types. It is a perennial herb growing erect or trailing, sometimes rooting at stolons, its stem reaching up to 25 centimeters in length. The leaves are each made up of three leaflets. The inflorescence is a solitary flower or cluster of up to three, each flower with five yellow petals up to 2 centimeters in length.
Oxalis montana is a species of flowering plant in the family Oxalidaceae known by the common names mountain woodsorrel, wood shamrock, sours and white woodsorrel. It may also be called common woodsorrel, though this name also applies to its close relative, Oxalis acetosella.
Oxalis debilis, the large-flowered pink-sorrel or pink woodsorrel, is a perennial plant and herb in the family Oxalidaceae. Its original distribution is South America but has become a very cosmopolitan species, occurring in all continents except Antarctica. It can be found in both temperate and tropical areas.
Oxalis priceae, the tufted yellow woodsorrel, is a species of flowering plant in the woodsorrel family. It is native primarily to southeastern North America, with a disjunct population being known from montane areas of Nuevo León, Mexico. This species is found in dry, rocky, calcareous areas such as cedar glades and cliff faces, but it is occasionally found in oak-pine woodlands and longleaf pine savanna as well.
