Eucrosia | |
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Flowers of Eucrosia bicolor | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Monocots |
Order: | Asparagales |
Family: | Amaryllidaceae |
Subfamily: | Amaryllidoideae |
Tribe: | Eucharideae |
Genus: | Eucrosia Ker Gawl. [1] |
Type species | |
Eucrosia bicolor Ker Gawl. [2] | |
Species | |
See text | |
Synonyms [1] | |
Eucrosia is a genus of herbaceous, perennial and bulbous plants in the Amaryllis family (Amaryllidaceae, subfamily Amaryllidoideae [3] ) distributed from Ecuador to Peru. The name is derived from the Greek eu, beautiful, and krossos, a fringe, referring to the long stamens. [4] As circumscribed in 2020, the genus contains six species. Phaedranassa and Rauhia are the genera most closely related to Eucrosia. [5]
All the members of the genus are bulbous. The leaves are deciduous, with characteristic long petioles and elliptical or ovate blades (laminae), up to 25 cm wide; they may or may not be present when the flowers are produced. The inflorescence is an umbel of 6–30 weakly to strongly zygomorphic flowers, tubular at the base, green, yellow or red in colour. The stamens hang downwards (i.e. are declinate) and have long filaments which in most species form a cup containing nectaries at the base. The flowers are assumed to be adapted for butterfly pollination, although there is one report of a hummingbird visiting E. eucrosioides. The fruit is a capsule with three locules; the seeds are flattened and winged. The diploid chromosome number is most commonly 2n=46. [6] [7]
It was published by John Bellenden Ker Gawler in 1817 with Eucrosia bicolor Ker Gawl. as the type species. [2]
As of February 2021 [update] , the World Checklist of Selected Plant Families accepted seven species of Eucrosia. [8] One, E. dodsonii, has since been recognized as belonging to the genus Urceolina and transferred as Urceolina dodsonii . [5]
A formerly accepted species has been moved to the genus Stenomesson :
Eucrosia is restricted to the central Andes of Ecuador and Peru. All of the species are found only in small areas or as small numbers of individuals. Two species are endemic to Ecuador, one to Peru. Three further species are only occasionally found in Peru, being primarily distributed in Ecuador. All species of Eucrosia are adapted to seasonally dry habitats, found on the lower, Pacific-facing slopes of the Andes and the adjacent lowlands. [6] [7] [5]
In cultivation, all species can be grown in pots in gritty soil in good light, being kept warm and dry when the leaves wither, and watered when the flowers or leaves begin to grow again. Only E. bicolor is widely grown. [9]
Hymenocallis (US) or (UK) is a genus of flowering plants in the amaryllis family native to the Americas.
Urceolina dodsonii, formerly known as Eucrosia dodsonii, is a species of plant that is endemic to Ecuador. Its natural habitat is subtropical or tropical moist montane forests. It is threatened by habitat loss.
Pamianthe is a genus of South American bulbous perennials in the Amaryllis family, subfamily Amaryllidoideae. They can be found in sandy, but rocky areas in Colombia, Ecuador, Peru, and Bolivia.
Phaedranassa is a genus of South American and Central American plants in Amaryllis family, subfamily Amaryllidoideae.
Ismene, or Peruvian daffodil, is a genus of South American plants in the Amaryllis family. The species are native to Peru and Ecuador and widely cultivated elsewhere as ornamentals because of their large, showy flowers.
Rhodophiala was a genus of herbaceous, perennial and bulbous plants in the Amaryllis family. It consisted of about 30 South American species distributed in southern Brazil, Argentina, and, specially, in Chile. Most of the species are known colloquially as añañuca. It has now been submerged in Zephyranthes.
The Griffineae is a tribe in the family Amaryllidaceae, subfamily Amaryllidoideae. It includes 3 genera with 22 species endemic to Brazil in South America. A typical character of the representatives of the tribe are the flowers - They are blue or lilac and collected into an umbel. Only the members of this tribe and the genus Lycoris are able to form flowers with such color in the whole subfamily Amaryllidoideae of Amaryllidaceae. The species in this group are typically perennial and produce bulbs. The leaves are green, with elliptical form in most of the cases but in some members, as in Worsleya, they are sword-shaped.
Urceolina amazonica, formerly known as Eucharis amazonica, is a species of flowering plant in the family Amaryllidaceae, native to Peru. It is cultivated as an ornamental in many countries and naturalized in Venezuela, Mexico, the West Indies, Ascension Island, Sri Lanka, Fiji, the Solomon Islands and the Society Islands. The English name Amazon lily is used for this species, but is also used for some other species of the genus Urceolina.
Eucrosia eucrosioides is a species of flowering plant in the family Amaryllidaceae. It is found in south west Ecuador and north Peru. Its natural habitats are seasonally dry lowland areas.
Eucrosia mirabilis is a species of plant from Ecuador. In the original scientific description in 1869, it was believed to be from Peru, but there is little evidence it ever grew there. The plant disappeared from cultivation until it was found in Ecuador in 1997. Its natural habitats are seasonally dry lowland areas to elevations of 1500 m.
The Amaryllidaceae are a family of herbaceous, mainly perennial and bulbous flowering plants in the monocot order Asparagales. The family takes its name from the genus Amaryllis and is commonly known as the amaryllis family. The leaves are usually linear, and the flowers are usually bisexual and symmetrical, arranged in umbels on the stem. The petals and sepals are undifferentiated as tepals, which may be fused at the base into a floral tube. Some also display a corona. Allyl sulfide compounds produce the characteristic odour of the onion subfamily (Allioideae).
Stenomesson is a genus of bulbous plants in the family Amaryllidaceae. All the species are native to western South America.
Clinanthus is a genus of bulbous plants in the family Amaryllidaceae. It is found in western South America, including Ecuador, Peru, Bolivia, north Chile and north west Argentina.
Amaryllidoideae is a subfamily of monocot flowering plants in the family Amaryllidaceae, order Asparagales. The most recent APG classification, APG III, takes a broad view of the Amaryllidaceae, which then has three subfamilies, one of which is Amaryllidoideae, and the others are Allioideae and Agapanthoideae. The subfamily consists of about seventy genera, with over eight hundred species, and a worldwide distribution.
Paramongaia is a genus of South American plants in the Narcissus Family ( Amaryllidaceae), the most important species being Paramongaia weberbaueri found only in the Andes of Peru and Bolivia. Common names are "giant Peruvian daffodil." and Cojomaria. Its appearance resembles the "King Alfred" Daffodil, but the flower is up to 7.25 inches in length by 7.5 inches wide with a corona 3.3 inches by 3 inches long by three inches wide.
Urceolina is a genus of South American plants in the amaryllis family native to Bolivia, Brazil, Colombia, Costa Rica, Ecuador, Guatemala, Panama, and Peru. It has also been introduced to many South and Central American states, as well as India and Sri Lanka. The formerly accepted genera Eucharis and Caliphruria are now regarded as synonyms of this genus. Many species of this genus share the common name Amazon lily.
Leptochiton is a genus of South American plants in the Amaryllis family.
Eucharideae is a tribe of plants within the family Amaryllidaceae. It was augmented in 2000 by Meerow et al. following a molecular phylogenetic study that revealed that many elements of the tribe Stenomesseae segregated with it, rather than separately, and were subsequently submerged in it. Further revisions were made in 2020, when three genera were merged. It forms one of the tribes of the Andean subclade of the American clade of the subfamily.
Stenomesson korsakoffii is a species of plant in the family Amaryllidaceae native to Peru. It was formerly known as Caliphruria korsakoffii and Urceolina korsakoffii, but a 2020 molecular phylogenetic study indicates that this species is sister to the other species of Stenomesson.