Crocus is a genus of seasonal flowering plants in the family Iridaceae comprising about 100 species of perennials growing from corms. They are low growing plants with relatively large white, yellow, orange or purple flowers that become dormant after flowering. Many are cultivated for their flowers appearing in autumn, winter, or spring. The spice saffron is obtained from the dried stigma of Crocus sativus, an autumn-blooming species. Crocuses are native to woodland, scrub, and meadows from sea level to alpine tundra from the Mediterranean, through North Africa, central and southern Europe, the islands of the Aegean, the Middle East and across Central Asia to Xinjiang in western China.
Crocus sativus, commonly known as saffron crocus, or autumn crocus, is a species of flowering plant of the Crocus genus in the iris family Iridaceae. It is best known for producing the spice saffron from the filaments that grow inside the flower. The term "autumn crocus" is also used for species in the Colchicum genus, which strongly resemble crocuses. However, crocuses have 3 stamens and 3 styles, while colchicums have 6 stamens and 1 style, and belong to a different family, Colchicaceae. Colchicums are also toxic.
Crocus vernus is a species in Family Iridaceae, native to the Alps, the Pyrenees, and the Balkans. Its cultivars and those of Crocus flavus are used as ornamental plants. The Dutch crocuses are larger than the other cultivated crocus species. Depending on the year, Crocus vernus starts flowering about the same time or up to 2 weeks after Crocus chrysanthus starts flowering. Height: 4–6" (10–15 cm).
Crocus banaticus, syn. C. iridiflorus, is a species of flowering plant belonging to the family Iridaceae, native to the Balkans, particularly in Serbia, Romania and south western Ukraine. It creates its own subgenus in the Crocus subfamily known as Crociris. It is a cormous perennial growing to 10 cm (4 in).
Crocus chrysanthus, the snow crocus or golden crocus, is a species of flowering plant of the Crocus genus in the family Iridaceae. Native to the Balkans and Turkey, it bears vivid orange-yellow bowl-shaped flowers. It has smaller corms and a smaller flower than the giant Dutch crocus, although it produces more flowers per bulb than the latter. Its common name, "snow crocus", derives from its exceptionally early flowering period, blooming about two weeks before the giant crocus, and often emerging through the snow in late winter or early spring. The leaves are narrow with a silver central stripe. Height: 3–4 inches (7.6–10.2 cm).
Crocus sieberi, Sieber's crocus, also referred to as the Cretan crocus or snow crocus, is a plant of the genus Crocus in the family Iridaceae. A small, early blooming crocus, it easily naturalises, and is marked by a brilliant orange which is mostly confined to the stamens and style, fading through the bottom third of the tepal. It grows wild generally in the Balkans and Greece, especially in the island Crete. There are four subtypes: sieberi (Crete), atticus, nivalis and sublimis. Its cultivars are used as ornamental plants. Height: 3–4 inches (7.6–10.2 cm).
Crocus tommasinianus, the woodland crocus, early crocus, or Tommasini's crocus, was named after the botanist Muzio G. Spirito de Tommasini (1794-1879). It is native to Bulgaria, Hungary, Albania, and the former Yugoslavia. It is often referred to as the early or snow crocus, but these terms are shared with several other species, although C. tommasinianus is amongst the first to bloom.
Colchicum cilicicum, the Tenore autumn crocus, is a species of flowering plant in the Colchicaceae family. A bulbous perennial, it bears deep rose-lilac flowers in late summer, with barely any chequered pattern on the petals (tessellation). It has a very noticeable white stripe down the centre of each petal, which gives it a star-like appearance at the base. The flowers tend to stand up to weather better than other colchicum blooms. The flowers appear before the strap-like leaves, giving this and other colchicum species the common name “naked lady”. Although colchicums are called “autumn crocuses” they belong to a different family than true crocuses. There are in fact autumn-flowering species of crocus such as Crocus sativus, which is the source of the spice saffron. Colchicum cilicicum, by contrast, is toxic if eaten.
Crocus biflorus, the silvery crocus, is a species of flowering plant in the genus Crocus of the family Iridaceae, native to southeastern Europe and southwestern Asia, including Italy, the Balkans, Ukraine, Turkey, Caucasus, Iraq, and Iran. It is a cormous perennial growing to 6 cm (2.4 in) tall and wide. It is a highly variable species, with flowers in shades of pale mauve or white, often with darker stripes on the outer tepals. The flowers appear early in spring.
Crocus graveolens is a species of flowering plant in the family Iridaceae. It is native to Lebanon, Palestine, Syria, and Turkey.
Crocus nudiflorus is a species of flowering plant in the genus Crocus of the family Iridaceae. It is an autumn-flowering, dwarf, deciduous perennial found in western Europe from southwestern France to Spain. It has been cultivated since Tudor times in Great Britain, where it is now naturalized.
Crocus olivieri is a species of Crocus from Balkans, Albania, Yugoslavia and Bulgaria to Greece and Turkey.
Crocus scardicus is a species of flowering plant in the genus Crocus of the family Iridaceae. It is a cormous perennial native to eastern Albania, Kosovo, North Macedonia.
Crocus fleischeri is a species of flowering plant in the genus Crocus of the family Iridaceae. It is a cormous perennial with a native range from the eastern Aegean Islands to western and south western Turkey.
Crocus candidus is a species of flowering plant in the genus Crocus of the family Iridaceae. It is a cormous perennial native to Turkey.
Crocus antalyensis is a species of flowering plant in the genus Crocus of the family Iridaceae. It is a cormous perennial native to Turkey.
Crocus korolkowii is a species of flowering plant in the genus Crocus of the family Iridaceae. It is a cormous perennial with a native range from central Asia to northern Pakistan.
Crocus alatavicus is a species of flowering plant in the genus Crocus of the family Iridaceae. It is a cormous perennial native to Kazakhstan, Kirgizstan, Tadzhikistan, Uzbekistan, and Xinjiang.
Crocus cyprius is a species of flowering plant in the genus Crocus of the family Iridaceae. It is a cormous perennial native to Cyprus where it is found in the Troödos Mountains.
Crocus hartmannianus is a species of flowering plant in the genus Crocus of the family Iridaceae. It is a cormous perennial native to Cyprus.
