Ranunculus is a genus of about 500 species of flowering plants in the family Ranunculaceae. Members of the genus include the buttercups, spearworts and water crowfoots. The petals are often highly lustrous, especially in yellow species, owing to a special coloration mechanism: the petal's upper surface is very smooth causing a mirror-like reflection. The flash aids in attracting pollinating insects and temperature regulation of the flower's reproductive organs. Buttercups usually flower in the spring, but flowers may be found throughout the summer, especially where the plants are growing as opportunistic colonizers, as in the case of garden weeds.
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 glacialis, the glacier buttercup or glacier crowfoot, is a plant of the family Ranunculaceae.
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 lyallii, is a species of Ranunculus (buttercup), endemic to New Zealand, where it occurs in the South Island and on Stewart Island at altitudes of 700–1,500 m.
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.
Ficaria is a small genus of several species of plants in the Ranunculaceae family, which were previously grouped with Ranunculus. The genus includes Ficaria verna, known as fig buttercup or lesser celandine, and related species. The name "Ficaria" is Classical Latin for fig. Plants in the genus are closely related to true buttercups, but generally have only three sepals and swollen smooth achenes.
Geranium bicknellii is a species of geranium known by the common names Bicknell's cranesbill and northern cranesbill. It is native to much of the northern half of North America, where it can be found in a number of forest and woodland habitats. This is an annual or biennial herb which grows hairy stems up to about half a meter long. It may be erect or lie near the ground. Each leaf is several centimeters long and wide and is divided into several lobes, each of which may have smaller lobes or teeth. Flowers grow singly or in pairs and have pointed sepals and small lavender petals, each with a notch in the tip. The fruit has a rounded body with a long, straight style about 2 centimeters in length and tipped with a small beak.
Ranunculus aconitifolius is a species of flowering plant in the family Ranunculaceae, native to central Europe. Growing to 60 cm (24 in) high by 40 cm (16 in) broad,it is an herbaceous perennial with palmate leaves up to 20 cm (8 in) long, and panicles of white, saucer-shaped flowers in spring.
Ranunculus eschscholtzii is a species of buttercup known by the common name Eschscholtz's buttercup.
Ranunculus pedatifidus is a species of buttercup known by the common names surefoot buttercup, northern buttercup, and birdfoot buttercup. It has a circumpolar distribution, occurring throughout the northern latitudes of the Northern Hemisphere. There are two varieties, var. pedatifidus occurring mostly in Asia and var. affinis mostly native to North America.
Ranunculus allenii, commonly known as Allen's buttercup, is a flowering plant in the crowfoot or buttercup family, Ranunculaceae. Generally found in wetlands in northern latitudes, it bears yellow flowers in summer, which are pollinated by insects.
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 10 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 calandrinioides, the high alpine buttercup, is a species of flowering plant in the family Ranunculaceae, native to the Atlas Mountains of North Africa. Growing to 20 cm (8 in) tall by 15 cm (6 in) broad, it is an herbaceous perennial with broad, grey-green leaves which die down in summer, and white flowers, often tinged with pink, in winter and spring. It is one of the earliest buttercups to flower.
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 Canary and Azores Islands but is widely cultivated elsewhere as an ornamental. There are reports of it having become naturalized in parts of California.
Ranunculus trivedii is a flowering plant in the buttercup family Ranunculaceae. It is one of the highest altitude flowering plants in the world.
Ranunculus bullatus, commonly known as autumn buttercup, is a perennial member of the buttercup family Ranunculaceae, native to Europe and north Africa, including most Mediterranean islands.
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.
