Ranunculus is a large genus of about 1700 to more than 1800 species of flowering plants in the family Ranunculaceae. Members of the genus are known as buttercups, spearworts and water crowfoots.
Ranunculus repens, the creeping buttercup, is a flowering plant in the buttercup family Ranunculaceae, native to Europe, Asia and northwestern Africa. It is also called creeping crowfoot and sitfast.
Ranunculus bulbosus, commonly known as bulbous buttercup or St. Anthony's turnip, is a perennial flowering plant in the buttercup family Ranunculaceae. It has bright yellow flowers, and deeply divided, three-lobed long-petioled basal leaves.
Ranunculus californicus, commonly known as the California buttercup, is a flowering plant of the buttercup family Ranunculaceae. It is a native of California, where it is common in many habitats, including chaparral and woodlands.
Ranunculus acris is a species of flowering plant in the family Ranunculaceae, and is one of the more common buttercups across Europe and temperate Eurasia. Common names include meadow buttercup, tall buttercup, common buttercup and giant buttercup.
Ranunculus glaberrimus, the sagebrush buttercup, is a species of flowering plant in the buttercup family, Ranunculaceae. It is native to interior western North America, in western Canada, the western United States, and the northwestern Great Plains.
Ranunculus sceleratus known by the common names celery-leaved buttercup, celery-leaf buttercup, and cursed buttercup is a species of flowering plant in the buttercup family Ranunculaceae. It has a circumpolar distribution in the northern hemisphere, native to temperate and boreal North America and Eurasia, where it grows in wet and moist habitats, including ponds and streambanks.
Ranunculus flammula, the lesser spearwort, greater creeping spearwort or banewort, is a species of perennial herbaceous plants in the genus Ranunculus (buttercup), growing in damp places throughout the Boreal Kingdom. It flowers June/July. Ranunculus flammula is poisonous. It is very closely related to R. reptans, which is distinguished by prostrate and more slender stems, narrower leaves and smaller flowers and is sometimes included within R. flammula sensu lato as a variety.
Ranunculus alismifolius is a species of buttercup known by the common name plantainleaf buttercup. It is native to western North America from British Columbia to California to Colorado, where it grows in moist mountain habitat such as meadows, streambanks, and bogs, becoming common to abundant in some places. It is somewhat variable in appearance and there are several varieties which can be hard to tell apart. In general the plant is a perennial herb producing a few usually upright to erect, branching stems from a fleshy, fibrous root system. It can be up to half a meter tall, or it can remain quite short and clumpy. The leaves vary in shape, the lower ones with oval blades and the upper linear to lance-shaped, all borne on long petioles. The inflorescence bears one or more flowers, each on a long pedicel. The flower has up to 12 yellow petals and many yellow stamens and pistils at the center. The fruit is an achene, borne in a spherical cluster of 12 or more.
Ranunculus canus is a species of buttercup known by the common name Sacramento Valley buttercup. It is endemic to California, where it grows in the Central Valley and adjacent mountain foothills, and the Transverse Ranges just south. It grows in grassland and meadows in woodland and forest habitat. This plant can be very similar in appearance to the California buttercup, and may be difficult to distinguish from it. It is variable in form. In general the plant is a perennial herb producing erect, usually hairy stems up to 65 centimeters tall. The hairy leaves are each made up of three leaflets, leaves occurring lower on the plant with wider leaflets which may be notched to lobed, and upper leaves with narrow, toothed leaflets. The flower has up to 23 shiny yellow petals and many yellow stamens and pistils at the center. The fruit is an achene, borne in a spherical cluster of 11 or more.
Ranunculus eschscholtzii is a species of buttercup flower known by the common name Eschscholtz's buttercup.
Ranunculus lobbii is a species of buttercup known by the common name Lobb's buttercup, or Lobb's aquatic buttercup. It is native to a few areas in western North America, where it is reported from British Columbia, Oregon, and northern California. It is an aquatic plant, growing in various types of shallow-water habitat, including forest ponds and vernal pools. It is an annual herb producing submerged stems 20 to 80 centimeters long which may float at the surface. The blades of the leaves are tiny and divided into threadlike segments. If any leaves develop on stem parts which are exposed to air they are much different in morphology, developing larger, more robust leaves. Flowers have generally 5 petals which are white in color and about half a centimeter long. Many stamens and pistils fill the center of the flower. The fruit is an achene borne in a spherical cluster.
Ranunculus orthorhynchus is a species of buttercup known by the common name straightbeak buttercup. It is native to western North America from Alaska to California to Utah, where it grows in moist areas in many types of habitat, including meadows and marshes.
Ranunculus parviflorus is a species of buttercup known by the common name smallflower buttercup. It is native to Europe, but it is known on other areas of the world as an introduced species and sometimes a roadside weed, for example, in parts of Australia and the United States.
Ranunculus pusillus, commonly called low spearwort, is a species of flowering plant in the buttercup family (Ranunculaceae). It is native to much of the eastern United States from New York to Florida and west to Texas; it is also known in California. It grows in wet habitat, where it is semi-aquatic growing partially submerged or terrestrially on muddy substrates.
Ranunculus auricomus, known as goldilocks buttercup or Greenland buttercup, is a perennial species of buttercup native to Eurasia. It is a calcicole typically found in moist woods and at the margins of woods. It is apomictic, and several hundred agamospecies have been recognised.
Ranunculus abortivus is a species of flowering plant in the buttercup family, Ranunculaceae. Its common names include littleleaf buttercup, small-flower crowfoot, small-flowered buttercup, and kidneyleaf buttercup. It is widespread across much of North America, found in all ten Canadian provinces as well as Yukon and the Northwest Territories, and most of the United States, except Hawaii, Oregon, California, and parts of the Southwest.
Ranunculus cortusifolius, also known as the Azores buttercup or Canary buttercup, is a plant species in the genus Ranunculus, family Ranunculaceae, the buttercup or crowfoot family. It grows on moister sites throughout the Azores, Madeira and Canary Islands but is widely cultivated elsewhere as an ornamental. There are reports of it having become naturalized in parts of California.
Ranunculus fascicularis, commonly called early buttercup, is a species of flowering plant in the buttercup family (Ranunculaceae). It is native to the eastern North America, where it is found in Canada and the United States. It is generally widespread in eastern North America, although its populations become sporadic in areas east of the Appalachian Mountains and south of New England. Its natural habitat is in dry areas with sparse vegetation, such as rocky or sandy bluffs, prairies, and savannas.
Ranunculus allegheniensis is a species of flowering plant in the buttercup family, Ranunculaceae. Its common names include Allegheny Mountain buttercup and Allegheny crowfoot.
