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, whose flower stems remain underground, that bear relatively large white, yellow, orange or purple flowers and then become dormant after flowering. Many are cultivated for their flowers, appearing in autumn, winter, or spring. The flowers close at night and in overcast weather conditions. The crocus has been known throughout recorded history, mainly as the source of saffron. Saffron is obtained from the dried stigma of Crocus sativus, an autumn-blooming species. It is valued as a spice and dyestuff, and is one of the most expensive spices in the world. Iran is the center of saffron production. 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. Crocuses may be propagated from seed or from daughter cormels formed on the corm, that eventually produce mature plants. They arrived in Europe from Turkey in the 16th century and became valued as an ornamental flowering plant.
Digitalis purpurea, the foxglove or common foxglove, is a toxic species of flowering plant in the plantain family Plantaginaceae, native to and widespread throughout most of temperate Europe. It has also naturalised in parts of North America and some other temperate regions. The plant is a popular garden subject, with many cultivars available. It is the original source of the heart medicine digoxin. This biennial plant grows as a rosette of leaves in the first year after sowing, before flowering and then dying in the second year. It generally produces enough seeds, however, so that new plants will continue to grow in a garden setting.
Crocosmia (;), also known as montbretia, is a small genus of flowering plants in the iris family, Iridaceae. It is native to the grasslands of southern and eastern Africa, ranging from South Africa to Sudan. One species is endemic to Madagascar.
Primula vulgaris, the common primrose, is a species of flowering plant in the family Primulaceae, native to western and southern Europe, northwest Africa, and parts of southwest Asia. The common name is primrose, or occasionally common primrose or English primrose to distinguish it from other Primula species also called primroses. None of these are closely related to the evening primroses.
Allium sphaerocephalon is a plant species in the Amaryllis family known as round-headed leek, round-headed garlic, ball-head onion, and other variations on these names. Drumstick allium is another common name applied to this species. Some publications use the alternate spelling Allium sphaerocephalum. It is a bulbous herbaceous perennial plant.
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.
Erythronium americanum, the trout lily, yellow trout lily, or yellow dogtooth violet, is a species of perennial, colony forming, spring ephemeral flower native to North America and dwelling in woodland habitats. Within its range it is a very common and widespread species, especially in eastern North America. The common name "trout lily" refers to the appearance of its gray-green leaves mottled with brown or gray, which allegedly resemble the coloring of brook trout.
Romulea bulbocodium is one of the best-known species from the genus Romulea. The plant, a member of the family Iridaceae, is native to the Mediterranean region and Sudan. It has many varieties and is occasionally used as ornamental plant.
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 corm 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 flavus, known as yellow crocus, Dutch yellow crocus or snow crocus, is a species of flowering plant in the genus Crocus of the family Iridaceae. It grows wild on the slopes of Greece, former Yugoslavia, Bulgaria, Romania and northwestern Turkey, with fragrant bright orange-yellow flowers. It is a small crocus (5–6 cm, despite the names of some cultivars, compared to the giant Dutch crocuses. Its cultivars are used as ornamental plants.
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 of 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).
Tecophilaea cyanocrocus, the Chilean blue crocus, is a flowering perennial plant that is native to Chile, growing at 2,000 to 3,000 m elevation on dry, stony slopes in the Andes mountains. Although it had survived in cultivation due to its use as a greenhouse and landscape plant, it was believed to be extinct in the wild due to overcollecting, overgrazing, and general destruction of habitat, until it was rediscovered in 2001.
Crocus angustifolius, the cloth-of-gold crocus, is a species of flowering plant in the genus Crocus of the family Iridaceae, native to southern Ukraine and Armenia. It is a cormous perennial growing to 5 cm (2.0 in) tall and wide. The narrow grass-like leaves with silver central stripe appear in late winter or early spring. They are followed by bright yellow fragrant flowers with maroon blotches on the outer petals.
Crocus biflorus, the silvery crocus or scotch 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 corsicus is a species of flowering plant in the genus Crocus of the family Iridaceae, endemic to the Mediterranean islands of Corsica and Sardinia.
Crocus speciosus, with common name Bieberstein's crocus, is a species of flowering plant in the genus Crocus of the family Iridaceae. The plant is native to northern and central Turkey, the Caucasus, northern Iran, Crimea and Bulgaria.
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 ochroleucus is species of flowering plant in the Iridaceae family. It is a cream-colored crocus native to Lebanon, Palestine and Syria.
Crocus dispathaceus is species of flowering plant growing from a corm, with a native range from southern Turkey to northern Syria.
