The conservation status of Streptocarpus ionanthus has been classed as near-threatened. Corrections? The False African violet is a member of the true African violet family and is native to East Africa. [7], All the species previously placed in the genus Saintpaulia are now placed in Streptocarpus section Saintpaulia. Achetez neuf ou d'occasion A wider range of species is now being looked at as sources of genes to introduce into modern cultivars. Another solution is to grow some African violet relatives, such as Streptocarpus or Chirita. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Palisade Cells Induced by a Rapid Temperature Decrease", "Cultural Guidelines for Commercial Production of African Violets (Saintpaulia ionantha)", African Violet Society of America website, African Violet in Romania - Pasionata de violete africane, Gesneriad Reference Web Saintpaulia article, Baby Violets - African Violet Houseplants, https://en.wikipedia.org/w/index.php?title=Streptocarpus_sect._Saintpaulia&oldid=987829878, Short description is different from Wikidata, Articles containing potentially dated statements from March 2020, All articles containing potentially dated statements, Creative Commons Attribution-ShareAlike License, This page was last edited on 9 November 2020, at 14:04. The flowers are 2–3 cm in diameter, with a five-lobed velvety corolla ("petals"), and grow in clusters of 3–10 or more on slender stalks called peduncles. [8] Former Saintpaulia species did form a monophyletic group, and were placed in section Saintpaulia of Streptocarpus subgenus Streptocarpella. The scientific name of African violets -- Saintpaulia -- reflects this German colonial past. African violets do not grow naturally anywhere else in the world. Habitat African violets are native to Tanzania and Kenya, favouring a tropical climate. If you are wondering what is African Violet or want to know all About African Violet, then you are just at the right place. James E. Faust and Royal D. Heins, J. AMER. The members of Saintpaulia are small perennial herbs with thick, hairy, ovate leaves. African violets are one of the easiest and most adaptable flowering houseplants to grow, as they do well in the conditions found in most homes. Following studies which showed most of the species to be very poorly differentiated, both genetically and morphologically, the number of species was reduced to six in a 2006 treatment, with the majority of former species reduced to subspecies under S. National Geographic author Andrew Evans has written an eye-opening look at the delicate state of African violets in their native habitat, where unscrupulous gatherers are plucking rare species from the jungle to sell to collectors. Erweiterte Edition. Wild species can have violet, purple, pale blue, or white flowers.[2]. The little African violet, one of America's favorite flowering houseplants, is in big trouble in its native habitat. Omissions? Saintpaulias are native to eastern tropical Africa. This is thought to be because rapid leaf cooling causes cell vacuole collapse in the palisade mesophyll cells. Taylor, had earlier collected and submitted specimens to the Royal Botanic Gardens, Kew, in 1884 and 1887 respectively, but the quality of specimens was insufficient to permit scientific description at that time. This biodiversity hotspot is renowned for its high number of endemic species. These dark green leaves have long petioles (leaf stems) and are arranged in a basal cluster at the base of the plant. There are seven main cultural factors you should be aware of to ensure their success. Plants can be divided into smaller daughter plants or even grown from leaf cuttings. Such violets are endemic to the Usambara Mountains, which are part of the Eastern Arc Mountain Range, a nonglaciated area with consistent climate. Unfortunately, the native cloud-forest habitat of Saintpaulia is under threat from encroaching agriculture. Burtt expanded the genus to approximately 20 species. In their native habitat, in the Usambara Mountains of East Africa, the relative humidity is generally about 70 to 80 percent. African violets are also associated with Easter and Valentine's Day. 119(4):727–734. In: A. Halevy (ed.). If the level of humidity is much less than this, an African Violet's … African violets that you buy are almost certainly hybrids, generally of one main species (Saintpaulia ionantha). The leaves are rounded to oval, 2.5–8.5 cm long with a 2–10 cm petiole, finely hairy, and have a fleshy texture. Native African Violets grow in the high cloud forest of Udzungwa National Park, Tanzania. They are available in a many colours from white, through pink and red to purple and various flower types. The genus was named for Saint Paul-Illaire and his father. Traductions en contexte de "african violet" en anglais-français avec Reverso Context : It is best to feed an African violet more frequently and at reduced strength. Species and cultivars are commonly called African violets (although they are not closely related to true violets) or saintpaulias. African Violets are native to eastern tropical Africa. One solution would be growing some of the Saintpaulia (African violet) species, many of which will actually prefer your cool windowsill–it will remind them of their native habitat high in the mountains of East Africa. Saintpaulia is a section within Streptocarpus subgenus Streptocarpella[1] consisting of about ten species of herbaceous perennial flowering plants in the family Gesneriaceae, native to Tanzania and adjacent southeastern Kenya in eastern tropical Africa. The members of … Let us know if you have suggestions to improve this article (requires login). Each species has its own specific habitat unique to East Africa. SCI. Several of the species and subspecies of the section are endangered, and many more are threatened, due to their native cloud forest habitats being cleared for agriculture. The plants get their common name "African violet" from their superficial resemblance to true violets (Viola, family Violaceae). This article was most recently revised and updated by, https://www.britannica.com/plant/African-violet. Viola is a genus of flowering plants in the violet family Violaceae.It is the largest genus in the family, containing between 525 and 600 species. Some Viola species are perennial plants, some are annual plants, and a few are small shrubs. Saintpaulias, which grow from 6–15 cm tall, can be anywhere from 6–30 cm wide. In 1892, British colonists discovered African violets (Saintpaulia ionantha) growing on moist, mossy rocks in their native Tanzanian habitat. Hundreds of horticultural varieties have been developed for their various flower colours and shapes, including half-sized miniatures. African violet, (genus Saintpaulia), any of the six species of flowering plants in the genus Saintpaulia (family Gesneriaceae). Saintpaulias are widely cultivated as house plants. Modeling Inflorescence Development of the African Violet (Saintpaulia ionantha Wendl.). African violets are easy to get your hands on, fun to grow, and bring a splash of color and cheer to your home. Until recently, only a few of these species have been used in breeding programs for the hybrids available in the market; most available as house plants are cultivars derived from Streptocarpus ionanthus (syn. [3] Two British plant enthusiasts, Sir John Kirk and the Reverend W.E. The section was previously treated as a separate genus, Saintpaulia, but molecular phylogenetic studies showed that it was nested within the genus Streptocarpus. Noté /5. Plants grow in different regions and habitats. The section was initially regarded as a separate genus. African violets are still growing in the wild African cloud woods, although some of the species are endangered because their natural habitats are being cleared for agricultural use. They grow into cascading vines in their native habitat and are known for their soft fuzzy foliage. These wild species vary in all aspects of growth habit and form, and flowers range in color from nearly white to dark purple. African violets that you buy are almost certainly hybrids, generally of one main species (Saintpaulia ionantha). Saintpaulia is a section within Streptocarpus subgenus Streptocarpella consisting of about ten species of herbaceous perennial flowering plants in the family Gesneriaceae, native to Tanzania and adjacent southeastern Kenya in eastern tropical Africa. The common types of this plant are: Not Available. Their native habitats are fog forests, which can be referred to as mossy or cloud forests, and they are characterized by frequent low-level cloud cover at … Ten species were recognized, as of March 2020[update]. Streptocarpus sect. Native to higher elevations in tropical eastern Africa, African violets are widely grown horticulturally, especially S. ionantha. vol. Retrouvez African Violets: In Search of the Wild Violets et des millions de livres en stock sur Amazon.fr. Many of the native plants are threatened or endangered due to habitat loss. Streptocarpus sect. Verzeichnis eponymischer Pflanzennamen. Although the size per category is not set in stone, these are a general guideline. Burtt had expanded the genus to approximately 20 species. [6], A molecular phylogenetic study in 2015 confirmed previous studies showing that species placed in Saintpaulia were deeply embedded within the genus Streptocarpus,[7] supporting the transfer of all Saintpaulia species to Streptocarpus in 2012. Easily propagated from leaf cuttings, African violets are common indoor houseplants that can thrive in low light conditions and bloom throughout the year. [5] In 2009, 9 species, 8 subspecies, and 2 varieties were recognized. Smithsonian World Checklist of the Gesneriaceae. The African Violet Society of America is the International Cultivar Registration Authority for the section and its cultivars. If you’re anything like me, you’ve killed at least one poor African violet in your lifetime due to neglect. Burkhardt, Lotte. Most species are found in the temperate Northern Hemisphere; however, some are also found in widely divergent areas such as Hawaii, Australasia, and the Andes.. © Steve | CC BY-NC-SA 2.0 [13] Several of the species and subspecies are endangered, and many more are threatened, due to clearance of their native cloud forest habitat for agriculture. There is a concentration of species in the Nguru mountains of Tanzania. The native habitat of African Violets is the equatorial cloud forests of Tanzania and Kenya. The District Commissioner of Tanga, Baron W. Saint Paul Illaire, sent specimens onto Germany where they were formally described in his honor as Saintpaulia. Most of the African violet sites are located in Tanzania. 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