Contents 1 Description 1.1 Sizes 2 Growth 2.1 Temperature 2.2 Propagation 2.3 Flowering 3 Distribution 4 Taxonomy 5 Cultivation 6 In culture 7 References 8 External links


Description[edit] This section needs expansion with: plant structure. You can help by adding to it. (August 2013) Saintpaulias, which grow from 6–15 cm tall, can be anywhere from 6–30 cm wide. 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. 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. Wild species can have violet, purple, pale blue, or white flowers.[citation needed] Sizes[edit] Plants can be classified as one of several sizes based on its above-ground diameter. Although the size per category is not set in stone, these are a general guideline.[1][2] Micro: less than 3 inches Super-mini: 3 to 4 inches Mini: between 4 and 6 inches Semi-mini: between 6 and 8-10 inches Standard: between 8-10 to 12-16 inches Large/Giant: over 12-16 inches


Growth[edit] This section needs expansion with: nodes and internodes, adventitious roots, growing from seed, crown. You can help by adding to it. (August 2013) Temperature[edit] Saintpaulias are highly sensitive to temperature changes, especially rapid leaf cooling. Spilling cold water on African violet leaves causes discoloration. This is thought to be because rapid leaf cooling causes cell vacuole collapse in the palisade mesophyll cells.[3] Propagation[edit] African violets are commonly propagated asexually. Plants can be divided into smaller daughter plants or even grown from leaf cuttings.[4] Growing African violets from seed is rare and most commercially available plants are produced from cuttings and tissue culture.[5] Flowering[edit] The African violet is a day-neutral plant regarding flower development.[6][7]


Distribution[edit] Saintpaulias are native to eastern tropical Africa. There is a concentration of species in the Nguru mountains of Tanzania.


Taxonomy[edit] The plants get their common name "African violet" from their superficial resemblance to true violets (Viola, family Violaceae). The genus is named after Baron Walter von Saint Paul-Illaire (1860–1910), the district commissioner of Tanga province who discovered the plant in Tanganyika (now Tanzania) in Africa in 1892 and sent seeds back to his father, an amateur botanist in Germany. Two British plant enthusiasts, Sir John Kirk and the Reverend W.E. 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. The genus Saintpaulia, and original species S. ionantha, were scientifically described by H. Wendland in 1893.[8] Revisions of the genus by B.L. Burtt expanded the genus to approximately 20 species. Due to recent studies which showed most of the species to be very poorly differentiated, both genetically and morphologically, the number of species has been reduced to six, with the majority of former species reduced to subspecies under S. ionantha, in a recent floristic treatment.[9] As of 2009, 9 species, 8 subspecies, and 2 varieties have been recognized.[10] Old name vs. current name Saintpaulia amaniensis = S. ionantha ssp. grotei Saintpaulia brevipilosa = S. ionantha ssp. velutina Saintpaulia confusa = S. ionantha ssp. grotei Saintpaulia difficilis = S. ionantha ssp. grotei Saintpaulia diplotricha = S. ionantha ssp. ionantha var. diplotricha Saintpaulia grandifolia = S. ionantha ssp. grandifolia Saintpaulia grotei = S. ionantha ssp. grotei Saintpaulia intermedia = S. ionantha ssp. pendula Saintpaulia magungensis = S. ionantha ssp. grotei Saintpaulia magungensis var. minima = S. ionantha ssp. grotei Saintpaulia magungensis var. occidentalis = S. ionantha ssp. occidentalis Saintpaulia nitida = S. ionantha ssp. nitida Saintpaulia orbicularis = S. ionantha ssp. orbicularis Saintpaulia pendula = S. ionantha ssp. pendula Saintpaulia pendula var. kizarae = S. ionantha ssp. pendula Saintpaulia rupicola = S. ionantha ssp. rupicola Saintpaulia tongwensis = S. ionantha ssp. ionantha var. ionantha Saintpaulia velutina = S. ionantha ssp. velutina The genus is most closely related to Streptocarpus, with recent phylogenetic studies suggesting it has evolved directly from subgenus Streptocarpella.


Cultivation[edit] Saintpaulias are widely cultivated as house plants. 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 Saintpaulia ionantha (syn. S. kewensis). A wider range of species is now being looked at as sources of genes to introduce into modern cultivars. The African Violet Society of America is the International Cultivar Registration Authority for the genus Saintpaulia and its cultivars.


In culture[edit] African violets have long been associated with mothers and motherhood. For this reason they have been a traditional gift to mothers in many cultures around the world. African violets are also associated with Easter and Valentine's Day.[5]


References[edit] ^ "Grow-African-Violets.com". Retrieved 30 May 2013.  ^ "The Violet Barn". Retrieved 30 May 2013.  ^ Kadohama, Noriaki; Tatsuaki Goh; Miwa Ohnishi; Hidehiro Fukaki; Tetsuro Mimura; Yoshihiro Suzuki (February 2013). "Sudden Collapse of Vacuoles in Saintpaulia sp. Palisade Cells Induced by a Rapid Temperature Decrease". PLOS ONE. 8 (2): e57259. doi:10.1371/journal.pone.0057259. PMC 3581458 . PMID 23451194.  ^ Thomas, Paul A. "Growing African Violets". CAES Publications. Retrieved 11 August 2013.  ^ a b Chen, J. "Cultural Guidelines for Commercial Production of African Violets (Saintpaulia ionantha)". University of Florida. Retrieved 13 August 2013.  ^ Modeling Inflorescence Development of the African Violet (Saintpaulia ionantha Wendl.). James E. Faust and Royal D. Heins, J. AMER. SOC. HORT. SCI. 119(4):727–734. 1994. ^ Saintpaulia ionantha, Stromme E, 1985, p. 48–49. In: A. Halevy (ed.). CRC handbook of flowering. vol. 3. CRC Press, Boca Raton, Fla. ^ Smithsonian World Checklist of the Gesneriaceae ^ Darbyshire (2006) Saintpaulia, pp. 50-72, in Beentjy & Ghazanfar (eds), Fl. Trop. East Africa ^ Pilon F (2012) Saintpaulia. The history and origin of the African Violet.


External links[edit] Wikimedia Commons has media related to Saintpaulia. Wikispecies has information related to Saintpaulia African Violet Society of America website African Violet in Romania - Pasionata de violete africane African Violet Society of Canada website Swedish African Violet Society website Gesneriad Reference Web Saintpaulia article African Violet in Germany African Violet Thailand Authority control NDL: 00570795 Retrieved from "https://en.wikipedia.org/w/index.php?title=Saintpaulia&oldid=818358453" Categories: Afromontane floraEndemic flora of TanzaniaFlora of East Tropical AfricaFlowersGarden plants of AfricaGesneriaceaeHouse plantsHidden categories: Articles with 'species' microformatsArticles to be expanded from August 2013All articles to be expandedArticles using small message boxesAll articles with unsourced statementsArticles with unsourced statements from August 2013


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African_violet - Photos and All Basic Informations

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Taxonomy (biology)PlantaeAngiospermsEudicotsAsteridsLamialesGesneriaceaeHermann WendlandSaintpaulia GoetzeanaSaintpaulia InconspicuaSaintpaulia IonanthaSaintpaulia ShumensisSaintpaulia TeitensisEnlargeEnlargeHerbaceousPerennial PlantFlowering PlantGesneriaceaeTanzaniaKenyaAfricaEndangered SpeciesCloud ForestAgricultureNear-threatened SpeciesLeavesPetiole (botany)TrichomeFlowerFlowersWikipedia:Citation NeededEdit Section: TemperatureCell VacuolePalisade MesophyllPlant PropagationAsexual ReproductionSeedTissue CulturePhotoperiodismAfricaNguru MountainsTanzaniaViolet (plant)ViolaceaeTanga ProvinceGerman East AfricaTanzaniaGermanyRoyal Botanic Gardens, KewHermann WendlandBrian Laurence BurttGeneticallyMorphology (biology)SpeciesSubspeciesStreptocarpusHouse PlantCultivarAfrican Violet Society Of AmericaInternational Cultivar Registration AuthorityEasterValentine's DayDigital Object IdentifierPubMed CentralPubMed IdentifierWikispeciesHelp:Authority ControlNational Diet LibraryHelp:CategoryCategory:Afromontane FloraCategory:Endemic Flora Of TanzaniaCategory:Flora Of East Tropical AfricaCategory:FlowersCategory:Garden Plants Of AfricaCategory:GesneriaceaeCategory:House PlantsCategory:Articles With 'species' MicroformatsCategory:Articles To Be Expanded From August 2013Category:All Articles To Be ExpandedCategory:Articles Using Small Message BoxesCategory:All Articles With Unsourced StatementsCategory:Articles With Unsourced Statements From August 2013Discussion About Edits From This IP Address [n]A List Of Edits Made From This IP Address [y]View The Content Page [c]Discussion About The Content Page [t]Edit This Page [e]Visit The Main Page [z]Guides To Browsing WikipediaFeatured Content – The Best Of WikipediaFind Background Information On Current EventsLoad A Random Article [x]Guidance On How To Use And Edit WikipediaFind Out About WikipediaAbout The Project, What You Can Do, Where To Find ThingsA List Of Recent Changes In The Wiki [r]List Of All English Wikipedia Pages Containing Links To This Page [j]Recent Changes In Pages Linked From This Page [k]Upload Files [u]A List Of All Special Pages [q]Wikipedia:AboutWikipedia:General Disclaimer



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