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.
Iridaceae is a family of plants in order Asparagales, taking its name from the irises. It has a nearly global distribution, with 69 accepted genera with a total of c. 2500 species. It includes a number of economically important cultivated plants, such as species of Freesia, Gladiolus, and Crocus, as well as the crop saffron.
Crocus sativus, commonly known as saffron crocus or autumn crocus, is a species of flowering plant in the iris family Iridaceae. A cormous autumn-flowering cultivated perennial, unknown in the wild, it is best known for the culinary use of its floral stigmas as the spice saffron. Human cultivation of saffron crocus and the trade and use of saffron have endured for more than 3,500 years and span different cultures, continents, and civilizations.
Bulbine bulbosa, commonly known as bulbine lily, native leek, golden lily, or native onion, is a species of flowering plant in the family Asphodelaceae and is endemic to Australia. It is a perennial herb with thick roots, channelled leaves, and yellow flowers with hairy stamen filaments.
Watsonia marginata is a species of flowering plant in the family Iridaceae known by the common name fragrant bugle-lily. It is native to the Cape Provinces of South Africa, but it is well known as an ornamental plant grown in gardens for its showy spikes of flowers. Its native range is an area with winter rainfall and dry summers. It is a perennial herb growing from a corm and growing to a maximum height well over one metre when in flower, sometimes reaching two metres. Each corm produces three or four erect leaves that measure up to 80 cm long by 5 wide. They are blue-green with thickened yellow margins. The inflorescence is a dense spike of 30 to 50 flowers which may be any shade of pink or sometimes dark red or white. The flower is actinomorphic, or radially symmetrical, unlike those of other Watsonia, which are zygomorphic. The flowers are several cm long.
Babiana ambigua is a species of plant in the Iridaceae. It is endemic to the Western Cape province of South Africa. It is a geophyte, that appears from an underground corm every year and grows to a height of 5–8 cm (2.0–3.1 in) or occasionally up to 16 cm (6.3 in). Its leaves are pleated, hairy, lance-shaped, reaching higher than the inflorescence. The fragrant, mirror-symmetric, blue to mauve flowers, consist of six tepals merged into a tube at their base, but with free lobes at the top. The lower lateral tepals have whitish markings accentuated by a more intense blue line along their margin. Each flower is supported by two green bracts sometimes with a brownish tip, and the inner bract is divided entirely to its base. There are three anthers crowded to the dorsal side of the perianth and a style divided in three branches on top of a smooth ovary. Flowers can be found from late July at sea level to the end of September at high altitude.
Crocus etruscus is a species of flowering plant in the genus Crocus of the family Iridaceae, endemic to woodlands of Central Tuscany (Italy). It is a cormous perennial growing to 8 cm (3.1 in) tall. The lilac flowers with purple veining and prominent orange stigmas appear in early spring.
Iris crocea is a species in the genus Iris, it is also in the subgenus Limniris and the series Spuriae. It is a rhizomatous perennial plant, found in Kashmir. It is cultivated as an ornamental plant. It is also commonly known as Golden Iris or Golden Flag. It was also known as Iris aurea for a long time, before that was regarded as a synonym of Iris crocea.
Crocus ochroleucus is species of flowering plant in the Iridaceae family. It is a cream-colored crocus native to Lebanon, Palestine and Syria.
Romulea sabulosa is a perennial geophyte that is assigned to the family Iridaceae. It has a few grooved thread-like leaves, and relatively large burgundy red trimerous flowers, reminiscent of crocus flowers, with yellow to light greenish with black markings and stamens with light green free filaments. It only occurs on sandy clay on renosterveld west of Nieuwoudtville in the Northern Cape province South Africa. It is called satynblom in Afrikaans.
Romulea tortuosa is a herbaceous perennial geophyte in the family Iridaceae native to South Africa. It has a small corm in the soil, a few prostrate coiling leaves, and fragrant, trimerous yellow flowers, sometimes with six brown blotches on the inside near the bottom of the flower.
Romulea toximontana is low a herbaceous perennial geophyte in the family Iridaceae native to South Africa. It has a small corm in the soil, several linear leaves, white trimerous flowers, yolk-yellow near the centre and with a purple wash on the outside. The 1997 IUCN Red List of Threatened Plants lists this species as rare.
Romulea monadelpha is a herbaceous perennial geophyte in the family Iridaceae native to South Africa. It has a small corm in the soil, a few thread-like leaves, and trimerous dark red flowers with elaborate markings on the inside near the bottom of the flower. It is called karoo satynblom in Afrikaans.
Typhonium peltandroides is a species of plant in the arum family that is endemic to Australia.
Patersonia argyrea is a species of plant in the iris family Iridaceae and is endemic to Western Australia. It is a tufted perennial herb with linear, sword-shaped leaves and violet tepals.
Crocus jablanicensis is a species of flowering plant in the genus Crocus of the family Iridaceae. It is a cormous perennial native from eastern Albania to western north Macedonia.
Babiana rubrocyanea is a perennial geophyte of 5–15 cm (2.0–5.9 in) high, with entire, lance-shaped, hairy, pleated leaves and flowers that have a narrowly funnel-shaped tube at their base and six free tepal lobes at the top that form a wide cup that is purplish blue with a sharply defined carmine red centre. It can be found in a small area of the Western Cape province of South Africa. Flowers can be found from August to the middle of September. It is called blue-and-red babiana in English and rooibloubobbejaantjie in Afrikaans.
Babiana scabrifolia is a perennial plant of 5–15 cm (2.0–5.9 in) high that annually forms leaves and flowers from an underground corm and is assigned to the Iris family. It produces relatively large, pale lilac or blue flowers slightly above the soil, and soft, lightly pleated leaves that reach beyond the flowers. These leaves are lance-shaped to oblong in adults, but line-shaped and twisted in non-flowering specimens. Flowering occurs from June to August. The species can be found in the Western Cape province of South Africa.
Babiana hypogaea is a perennial plant of about 5–8 cm (2.0–3.1 in) high that annually forms leaves and flowers from an underground corm that is assigned to the iris family. It has pale greenish yellow, buff or rarely white, mirro-symmetrical flowers and line- to sickle-shaped, slightly pleated, thinly hairy or hairless leaves that are held horizontally or inclined, that grows in the summer rainfall areas of southeastern Namibia and central and northern central South Africa. Flowers may be found between June and September and sometimes between December and May. It is called Bobbejaankalkoentjie, Bobbejaanuintjie or Ertappeluintjie in Afrikaans.
Babiana mucronata is a perennial plant species that grows to about 5–18 cm (2.0–7.1 in) high and annually forms leaves and flowers from an underground corm. It is assigned to the iris family. It has a simple or branched, more or less upright spike of 3-12 dark to pale violet-blue, mirror-symmetrical flowers. Each flower consists of a perianth that is merged below into a funnel-shaped tube of 10–25 mm (0.39–0.98 in) long but splits into six unequal tepals. Three stamens are curved, crowded near the upper lip, and carry pale violet anthers. Flowers may be found between late July and September.
