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''Streptocarpus'' ("twisted fruit" from Greek στρεπτός (''streptos'') "twisted" and καρπός (''carpos'') "fruit") is an
Afrotropical The Afrotropical realm is one of Earth's eight biogeographic realms. It includes Africa south of the Sahara Desert, the majority of the Arabian Peninsula, the island of Madagascar, southern Iran and extreme southwestern Pakistan, and the island ...
genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
of
flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...
s in the family
Gesneriaceae Gesneriaceae, the gesneriad family, is a family of flowering plants consisting of about 152 genera and ca. 3,540 species in the tropics and subtropics of the Old World (almost all Didymocarpoideae) and the New World (most Gesnerioideae), with ...
. The genus is native to
Afromontane The Afromontane regions are subregions of the Afrotropical realm, one of the Earth's eight biogeographic realms, covering the plant and animal species found in the mountains of Africa and the southern Arabian Peninsula. The Afromontane regions ...
biotope A biotope is an area of uniform environmental conditions providing a living place for a specific assemblage of plants and animals. ''Biotope'' is almost synonymous with the term "habitat", which is more commonly used in English-speaking countrie ...
s from central, eastern and southern
Africa Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area ...
, including
Madagascar Madagascar (; mg, Madagasikara, ), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), is an island country in the Indian Ocean, approximately off the coast of East Africa ...
and the
Comoro Islands The Comoro Islands or Comoros ( Shikomori ''Komori''; ar, جزر القمر , ''Juzur al-qamar''; french: Les Comores) form an archipelago of volcanic islands situated off the southeastern coast of Africa, to the east of Mozambique and northw ...
. The flowers are five-petalled, salverform tubes, almost
orchid Orchids are plants that belong to the family Orchidaceae (), a diverse and widespread group of flowering plants with blooms that are often colourful and fragrant. Along with the Asteraceae, they are one of the two largest families of flowering ...
-like in appearance, and hover or arch over the plant, while the pointed, elongate fruit is of a
helical Helical may refer to: * Helix, the mathematical concept for the shape * Helical engine, a proposed spacecraft propulsion drive * Helical spring, a coilspring * Helical plc, a British property company, once a maker of steel bar stock * Helicoil A t ...
form similar to that of the "tusk" of a
narwhal The narwhal, also known as a narwhale (''Monodon monoceros''), is a medium-sized toothed whale that possesses a large "tusk" from a protruding canine tooth. It lives year-round in the Arctic waters around Greenland, Canada and Russia. It is o ...
. In the wild, species can be found growing on shaded rocky hillsides or cliffs, on the ground, in rock crevices, and almost anywhere the seed can germinate and grow. For the home, there are now many hybrids of various colours and forms available. Although generally referred to simply as "Streptocarpus" or "Streps", the common name for
subgenus In biology, a subgenus (plural: subgenera) is a taxonomic rank directly below genus. In the International Code of Zoological Nomenclature, a subgeneric name can be used independently or included in a species name, in parentheses, placed between t ...
''Streptocarpus'' is Cape primrose, referring to the nativity of several species to
South Africa South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countri ...
and their superficial resemblance to the unrelated genus ''
Primula ''Primula'' () is a genus of herbaceous flowering plants in the family Primulaceae. They include the primrose ('' P. vulgaris''), a familiar wildflower of banks and verges. Other common species are '' P. auricula'' (auricula), '' P. veris'' (cow ...
''. The common name for
subgenus In biology, a subgenus (plural: subgenera) is a taxonomic rank directly below genus. In the International Code of Zoological Nomenclature, a subgeneric name can be used independently or included in a species name, in parentheses, placed between t ...
''Streptocarpella'' is nodding violet. ''Streptocarpus'' sect. ''Saintpaulia'' ("African violet") is a separate section within ''Streptocarpus'' subgenus ''Streptocarpella''. DNA studies have shown that, despite not having a twisted fruit, African violets evolved from within the Tanzanian ''Streptocarpus'' subgenus ''Streptocarpella''. There are a few
Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an area ...
n species that have recently been removed from the genus, most notably ''Streptocarpus orientalis'', now reclassified as '' Damrongia orientalis.'' Molecular systematics has shown conclusively that they are not true ''Streptocarpus''.Bellstedt, D. U., ''Streptocarpus'' Genus Overview


Description

There are two subgenera within ''Streptocarpus'', namely subgenus ''Streptocarpus'' and subgenus ''Streptocarpella''.


Subgenus ''Streptocarpus''

Within the ''Streptocarpus''
subgenus In biology, a subgenus (plural: subgenera) is a taxonomic rank directly below genus. In the International Code of Zoological Nomenclature, a subgeneric name can be used independently or included in a species name, in parentheses, placed between t ...
''Streptocarpus'', there are two main forms, the plurifoliates and the unifoliates. ''Streptocarpus'' with more than one leaf are called "plurifoliates", and there are two main types of these. First is the rosulate form, which is
perennial A perennial plant or simply perennial is a plant that lives more than two years. The term ('' per-'' + '' -ennial'', "through the years") is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also wide ...
. Rosulates are made up of a basal rosette of leaves. Flower stems sprout from the upper surfaces of the bases of these leaves. The most common ''Streptocarpus'' houseplant is of the rosulate type. The flowers of modern rosulate hybrids are generally three to several centimeters in diameter. The other plurifoliate type is essentially somewhere in between a rosulate and a unifoliate. In this group, two or three leaves grow in addition to the first leaf. The plurifoliates are perennial. Examples are ''Streptocarpus prolixus'', and ''Streptocarpus polyanthus'' ssp ''polyanthus''. The second form is the
unifoliate The following is a list of terms which are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (a single leaf blade or lamina) or compound (with several leaflets). The edge of the leaf may be regular o ...
, which only has one leaf. In the unifoliates group, one single leaf grows continuously from the base. Many unifoliates are also
monocarpic Monocarpic plants are those that flower and set seeds only once, and then die. The term is derived from Greek (''mono'', "single" + ''karpos'', "fruit" or "grain"), and was first used by Alphonse de Candolle. Other terms with the same meaning are ...
, which means that they will flower once, set seed, then die. But they may take a few years to reach this stage. In other unifoliates, the original leaf may die, but one or two new leaves will sprout from it, and the plant continues to grow. This subgenus (comprising plurifoliates and unifoliates) is unique in that, in winter, they can form abscission lines part way down the leaf (see photo gallery below). The leaf then dies back to this point, whilst the proximal part of the leaf stays alive and healthy. In unifoliate species, the remaining healthy portion of that leaf will start to grow again from the base.


Subgenus ''Streptocarpella''

Members of the ''Streptocarpus''
subgenus In biology, a subgenus (plural: subgenera) is a taxonomic rank directly below genus. In the International Code of Zoological Nomenclature, a subgeneric name can be used independently or included in a species name, in parentheses, placed between t ...
''Streptocarpella'' are very different in form to those mentioned above. The flowers and seed pods are similar, but the leaves and stems are
caulescent This glossary of botanical terms is a list of definitions of terms and concepts relevant to botany and plants in general. Terms of plant morphology are included here as well as at the more specific Glossary of plant morphology and Glossary o ...
(have stems). ''Streptocarpellas'' are generally clump-forming or trailing plants. Their flowers are only about 2.5-3.5 cm in diameter, and their colour range seems to be limited to mid-purples, pale pinks, and white. ''Streptocarpella'' leaves can be decussate in arrangement (each pair of leaves at a node is at 90 degrees to the ones preceding or following it), or ternate (whorls of 3 leaves at each node). Some specimens may exhibit both on the same plant. Streptocarpella are grown as houseplants, hanging plants, and sometimes as bedding plants. These two ''Streptocarpus'' subgenera do not interbreed. For information on ''Streptocarpus'' subgenus ''Streptocarpella'' section ''Saintpaulia'', see ''Streptocarpus'' sect. ''Saintpaulia''.


Flower anatomy

''Streptocarpus'' flowers are five-lobed, salverform,
zygomorphic Floral symmetry describes whether, and how, a flower, in particular its perianth, can be divided into two or more identical or mirror-image parts. Uncommonly, flowers may have no axis of symmetry at all, typically because their parts are spirall ...
tubes. The diagram at the right shows a labelled drawing of a vertical cross-section along the length of a ''Streptocarpus'' flower. It is important to note that the two anthers (each arising from one filament on each side of the flower), are loosely joined together. As the anthers mature, they open slightly and act like a pepper shaker, which means that not all the pollen is released at once. ''Streptocarpus'' flowers have evolved to be pollinated by birds, long-tongued flies, butterflies and probably long-tongued moths and bees. Although almost any small insect, animal, or breeze could potentially pollinate ''Streptocarpus''. ''Streptocarpus'' flowers often have nectar guidelines that guide would-be pollinators to the nectar (and anthers and stigmas). Self-pollination is also common.


Species

About 155 species of ''Streptocarpus'' are currently recognized, the first to be described being ''Streptocarpus rexii''. A complete list of the species and their synonyms can be found at the Smithsonian's World Checklist of Gesneriaceae. A list of selected species from representative locales follows: * '' S. andohahelensis'' Humbert (Madagascar) * '' S. candidus'' Hilliard - scented (South Africa, Natal) * '' S. caulescens'' Vatke (Kenya, Tanzania) * '' S. confusus'' Hilliard (South Africa) * '' S. cooperi'' C.B.Clarke (South Africa) * '' S. cyaneus'' S. Moore (South Africa, Transvaal) * '' S. denticulatus'' (South Africa) * '' S. dolomiticus'' - in the process of being described (origin unknown) * '' S. dunnii'' Hook. f. (South Africa) * '' S. elongatus'' Engl. (Cameroon, San Thomé Island, Sudan) * '' S. eylsii'' S.Moore - scented (Zimbabwe, Malawi, Mozambique, Zambia) * '' S. fanniniae'' Harv. Ex C. B. Cl. - scented (South Africa) * '' S. fenestra-dei'' Weigend & T.J.Edwards (South Africa, Transvaal) * '' S. formosus'' (Hilliard & B.L.Burtt) T.J.Edwards (South Africa) * '' S. gardenii'' Hook. (South Africa, Natal) * '' S. glandulosissimus'' Engl. (Burundi, Congo, Kenya, Rwanda, Tanzania, Uganda) * '' S. insularis'' Hutch. & Dalziel (West Africa: Fernando Po Island) * '' S. kentaniensis'' L.L.Britten & Story (Congo) * '' S. liliputana'' D.U.Bellstedt & T.J.Edwards (Pondoland in Eastern Cape, South Africa) * '' S. meyeri'' B.L. Burtt (South Africa) * '' S. milanjianus'' Hilliard & B.L.Burtt (Malawi) * '' S. modestus'' L.L.Britten (South Africa) * '' S. pentherianus'' (South Africa) * '' S. polyanthus'' Hook. (South Africa) * '' S. pusillus'' Harv. ex C.B.Clarke (South Africa) * '' S. revivescens'' Humbert ex B.L.Burtt (Madagascar) * '' S. rexii'' (Bowie ex Hook.) Lindl. (South Africa) * '' S. rhodesianus'' S.Moore (Angola, Katanga, Zambia) * '' S. saxorum'' Engl. (Kenya, Tanzania) * '' S. trabeculatus'' Hilliard (South Africa) * '' S. vandeleurii'' Baker f. & S.Moore - scented (South Africa) * '' S. variabilis'' Humbert (Madagascar, Comoro Islands, Anjouan Island) * '' S. wilmsii'' Engl. (South Africa) * '' S. zimmermannii'' Engl. (Tanzania)


Cultivation

Each grower will have their own preferences for cultivation. The details given below are a tested general guide, but ''Streptocarpus'' will do quite well on either side of these optimums. The two main things to remember when growing ''Streptocarpus'' are that they do not like soil that is too wet, and they do not like it too hot. Soil: Use an ordinary commercial potting mix with 1/8 to 1/4 perlite mixed in. This makes sure the soil will retain some moisture but not get boggy. Always have adequate drainage holes at the bottom of the pot you are planting in. Temperature: . They can be taken down to or less in winter for a rest. Light: Medium to bright indirect light is best. However, a bit of morning/late afternoon sun is more than okay. Even in dimmer light, they will flower - but less
floriferous {{Short pages monitor * 'Sioned' (magenta/pale pink) * 'Snow White' (white, yellow throat) * 'Stella' (pink with deeper veining) * 'Susan' (magenta, yellow throat) * 'Tina' (pink lower lobes deeper pink) * 'White Butterfly'


Genes and inheritance

The following is a quick summary of 1950s publications by Lawrence and Sturgess,Lawrence, W.J.C. and V.C. Sturgess. 1957. Studies on ''Streptocarpus''. III. Genetics and Chemistry of Flower Colour in the Garden forms, Species, and Hybrids. Heredity 11: 303-336.Lawrence, W.J.C. 1957. Studies on ''Streptocarpus''. IV. Genetics of Flower Colour Patterns. Heredity 11: 337-357. Colour genes V = places pigment in the flower stems F = places pigment in the petal cells V and F are both necessary to give colour, but do not control which colour. When V or F are recessive (vv or ff) the flowers will lack any colour and will be white in appearance. I = colour intensity. II = intense colour, Ii = medium colour and ii = pale colour. This gene doesn't control "which colour", just how "intense" the final colour will be in appearance. The actual flower colour genes are named O, R, and D. Where the second copy of the gene is given as a "_", the second copy can be either dominant or a recessive. For example, in blue flowers, only one dominant of each the three genes is needed (e.g. the O gene could be either OO or Oo, and it wouldn't matter which). Blue = O_R_D_ Magenta = ooR_D_ Pink = oorrD_ Mauve = O_R_dd Rose = ooR_dd Salmon = oorrdd Other genes affect the pattern of colour or modify the final colour. Some of these genes are: B = gives a blotch of colour in the throat of the bloom. The recessive "bb" produces flowers without a blotch. The trait appears to produce a darker or more intense version of the colour of the outer edges of the petals. Thus, you can get dark pink blotches on a lighter pink flower etc. H = gives colour on the capitate hairs of the pistil. The recessive "hh" gives white or colourless hairs. Genes F, I, B, and H are very closely linked and are usually inherited as a single unit. Therefore, many plants have pigmented flowers with at least medium intensity of color, and blotches in the throat, or have white flowers without blotches. C = adds a co-pigment to the flower colour. This gene modifies the appearance of the colour, giving a bluish tint to the overall colour. Plants with the recessive "cc" combination have flowers that are "brighter" in appearance. In the Mauve-Rose-Salmon series, the dominant gene produces undesirable murky colours. L = puts nectar guides in the flower tubes. The recessive "ll" produces flowers without the lines. Y = puts a yellow central stripe in the flower tube. I suspect that the size of the yellow area changes with "YY" versus "Yy" plants. The recessive "yy" would produce flowers with no yellow in the flower tube. Other genes are mentioned in the original articles, but they appear to involve some rarely seen colour modifications. Genes for plant size, fragrance etc. were not mentioned in these articles.


History of discovery and hybridisation

The following is an adapted excerpt from the 1906 text "
Hortus Veitchii James Herbert Veitch F.L.S., F.R.H.S. (1 May 1868 – 13 November 1907), was a member of the Veitch family who were distinguished horticulturists and nursery-men for over a century. Early days James was born at Chelsea, London, the elder son of ...
": The first ''Streptocarpus'' to reach British gardens was ''Streptocarpus rexii''. This species was sent to
Kew Kew () is a district in the London Borough of Richmond upon Thames. Its population at the 2011 census was 11,436. Kew is the location of the Royal Botanic Gardens ("Kew Gardens"), now a World Heritage Site, which includes Kew Palace. Kew is a ...
in 1824 by Mr Bowie, who was His Majesty’s collector in South Africa. The plant was found on the estate of Mr George Rex, after whom it was named. Following ''Streptocarpus rexii'' came ''Streptocarous polyantha'' from
Natal NATAL or Natal may refer to: Places * Natal, Rio Grande do Norte, a city in Brazil * Natal, South Africa (disambiguation), a region in South Africa ** Natalia Republic, a former country (1839–1843) ** Colony of Natal, a former British colony ...
. It was accidentally introduced to Kew in 1853 in material surrounding trunks of
tree ferns The tree ferns are arborescent (tree-like) ferns that grow with a trunk elevating the fronds above ground level, making them trees. Many extant tree ferns are members of the order Cyatheales, to which belong the families Cyatheaceae (scaly tree ...
sent from Natal by Captain Garden. ''Streptocarpus gardeni'', also introduced in 1853 from the same country was named for Captain Garden, who sent seeds to Kew. In 1860, Mr Wilson Saunders sent a specimen to Kew, and it was eventually named ''Streptocarpus saundersii''. In 1882, the
caulescent This glossary of botanical terms is a list of definitions of terms and concepts relevant to botany and plants in general. Terms of plant morphology are included here as well as at the more specific Glossary of plant morphology and Glossary o ...
species, ''Streptocarpus kirkii'', was sent to Kew by
Sir John Kirk Sir John Kirk, (19 December 1832 – 15 January 1922) was a physician, naturalist, companion to explorer David Livingstone, and British administrator in Zanzibar, where he was instrumental in ending the slave trade in that country, with the a ...
. ''Streptocarpus caulescens'', another caulescent species, followed in 1886. In 1887, ''Streptocarpus parviflora'' (probably ''Streptocarpus parviflorus'', and referred to hereafter as such) was raised from seed brought in from
Grahamstown Makhanda, also known as Grahamstown, is a town of about 140,000 people in the Eastern Cape province of South Africa. It is situated about northeast of Port Elizabeth and southwest of East London, Eastern Cape, East London. Makhanda is the lar ...
by Mr Watson of Kew. A similar plant raised from seed by Mr Lynch of the Cambridge Botanic Gardens, was eventually named ''Streptocarpus lutea''. The next plant to be introduced, ''Streptocarpus dunnii'', played an important role in the production of “beautiful hybrids” of the day. In 1884, seed was collected in the mountains of the
Transvaal gold fields The Transvaal gold fields resulted from gold discoveries during the 19th century in the South African Republic. After insignificant discoveries from 1840 up to 1870, payable or substantial gold deposits were found at: * Leydsdorp in 1870 and 1883 ...
, and sent to Kew by Mr E. G. Dunn of
Claremont, Cape Town Claremont is a suburb of Cape Town, South Africa. It is situated 9 kilometres south of the city, and is one of the so-called " Southern Suburbs", it is situated alongside Lansdowne. It is an important commercial and residential area, which is cur ...
. It was a unifoliate species with “rose or salmon red colour”. It first flowered at Kew in 1886. In 1890, ''Streptocarpus galpini'' was introduced to Kew by Mr E Galpin, who found it on the “Bearded Man” peak that forms one of the boundaries of Swaziland. '' Streptocarpus wendlandii'' was sent in 1887 from Transvaal to Naples to “Messrs Damman” (i.e. two or more men with the last name ‘Damman’ – possibly nurserymen). It first appeared in England at Kew in seed contained in soil attached to tree ferns from South Africa. It flowered at Kew in 1895. A hybrid named “''Streptocarpus'' × ''Dyeri''” was raised at Kew by crossing ''Streptocarpus wendlandii'' with ''Streptocarpus dunii''. ''Streptocarpus faninii'' (not currently listed, could this perhaps be referring to ''Streptocarpus fanniniae''?), is apparently noteworthy because of its contribution to many of the “more beautiful hybrids”.
Hortus Veitchii James Herbert Veitch F.L.S., F.R.H.S. (1 May 1868 – 13 November 1907), was a member of the Veitch family who were distinguished horticulturists and nursery-men for over a century. Early days James was born at Chelsea, London, the elder son of ...
states that the first hybrid ''Streptocarpus'' recorded was “''Streptocarpus'' × ''Greenii''”, which was the progeny of ''S. saundersii'' and ''S. rexii''. It was raised by Mr Charles Green, who was at the time the gardener to Sir George Mackay of Pendell Court. This specimen was apparently never widely grown and did not contribute to the “present garden race”. The initial step towards the “beautiful forms” in cultivation at the time was taken by the Curator of Kew. He raised the hybrid “''Streptocarpus'' × ''Kewensis''” by crossing ''S. rexii'' and ''S. dunii''. However, he had previously also raised ''S. parviflorus'' × ''S. rexii''. A coloured plate of the progeny was published in 1886. In 1887, another Kew-raised hybrid flowered. It was a hybrid of ''S. parviflorus'' and ''S. dunnii'', and received the name of ''S.'' × ''Watsoni'', after Mr Watson who raised the seed. In 1887, two hybrids (''S.'' × ''Kewensis'' and ''S.'' × ''Watsoni'') were crossed with each other and their parents in all combinations. A host of progeny resulted with marked differences in colour, size, form and flower, and many were “decidedly attractive”. A selection of these were obtained by Heal, who crossed them with each other and with the red-flowered ''S. dunii''. Many of these are now known as “Veitch’s Original Hybrids”. Breeding continued using these hybrids.


Societies and the international registry

There are several societies and groups dedicated to ''Streptocarpus'' enthusiasts. Common activities include imparting knowledge, sharing plant material for propagation, and ''Streptocarpus'' shows. These societies are both large and small. Some of the groups are housed within larger Gesneriad groups. Examples of ''Streptocarpus'' societies or groups: * British ''Streptocarpus'' Society * The Gesneriad Society (including societies and the international registry for ''Streptocarpus'' hybrids) * Gesneriphiles - an active email forum * AVI Streps - a forum for ''Streptocarpus'' enthusiasts * Steptocarpus Info - including forums


Showing and displays

Shows In addition to the casual growing, private enthusiasm, or hybridizing, ''Streptocarpus'' make excellent show plants. Flower shows are competitions where prizes are awarded for presenting outstanding, usually individual specimens. ''Streptocarpus'' are shown in locations all around the world, either in Streptocarpus-exclusive shows, or as part of wider garden or
Gesneriaceae Gesneriaceae, the gesneriad family, is a family of flowering plants consisting of about 152 genera and ca. 3,540 species in the tropics and subtropics of the Old World (almost all Didymocarpoideae) and the New World (most Gesnerioideae), with ...
shows. Generally, to do well at shows, a specimen needs to have many perfect flowers, none faded or damaged; and many healthy, unblemished leaves. ''Streptocarpus'' flowers come from leaves, so more leaves means more flowers.Dibley, R., ''Streptocarpus'' (second edition, Wales, 2008, pg 78 Prizes may also be awarded for "uniqueness" of a specimen. Displays Displays are when a large group of plants are shown together, and prizes are awarded for the overall 'look' of the display. Dibleys Nurseries, of
Wales Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the ...
, have won over 100 Royal Horticultural Society gold medals for their ''Streptocarpus'' displays, including 25
Chelsea Flower Show The RHS Chelsea Flower Show, formally known as the ''Great Spring Show'',Phil Clayton, ''The Great Temple Show'' in ''The Garden'' 2008, p.452, The Royal Horticultural Society is a garden show held for five days in May by the Royal Horticultural ...
gold medals.


Images

File:Peloria in Streptocarpus.jpg,
eft A newt is a salamander in the subfamily Pleurodelinae. The terrestrial juvenile phase is called an eft. Unlike other members of the family Salamandridae, newts are semiaquatic, alternating between aquatic and terrestrial habitats. Not all aqu ...
Normal ''Streptocarpus'' flower (zygomorphic), and ight
peloric Floral symmetry describes whether, and how, a flower, in particular its perianth, can be divided into two or more identical or mirror-image parts. Uncommonly, flowers may have no axis of symmetry at all, typically because their parts are spirall ...
''Streptocarpus'' flower on the same plant. File:Asymmetric cotyledon development in Streptocarpus subgenus Streptocarpella.jpg, Asymmetric cotyledon development in ''Streptocarpus'' subgenus Streptocarpella File:2007-03-20Streptocarpus01.jpg, ''Streptocarpus'' 'Marlene' from above File:Pink Streptocarpella flowers.JPG, Pink ''Streptocarpella'' flowers File:Streptocarpus seed next to pinky finger and seed pods.JPG, ''Streptocarpus'' seed File:A flower showing 'fantasy' patterning, Streptocarpus 'DS-Plush Animal'.JPG, A flower showing 'fantasy' patterning, ''Streptocarpus'' 'DS-Little Plushy Arctic Fox' File:Streptocarpus seedling with Streptocarpus liliputana in ancestry.JPG, ''Streptocarpus'' seedling with ''Streptocarpus liliputana'' in recent ancestry File:Streptocarpus confusus ssp confusus (unifoliate, monocarpic), young plant.JPG, ''Streptocarpus'' confusus ssp confusus, young plant File:Streptocarpus 'Anderson's Purple Delta'.JPG, ''Streptocarpus'' 'Anderson's Purple Delta' File:Part of the Dibleys Streptocarpus display at the Chelsea Flower Show in May 2011.JPG, Part of the Dibleys ''Streptocarpus'' display at the Chelsea Flower Show in May 2011 File:Streptoarpus flower anomaly - 6 petals.JPG, Extra petal anomaly in ''Streptocarpus'' 'Gloria' File:10-year-old (approx) Streptocarpus 'Kim' after pre-winter prune showing creeping stems.JPG, 10-year-old (approx) ''Streptocarpus'' 'Kim' after pre-winter prune showing creeping stems File:Streptocarpus 'Anderson's Wellington Morning' hybrid, side-on.JPG, Side-on view of a ''Streptocarpus'' flower File:Close-up of Streptocarpus bud.jpg, An unopened ''Streptocarpus'' bud showing hairs, ''Streptocarpus'' 'Anderson's Nightway' File:Streptocarpusconcordblue.jpg, ''Streptocarpella'' 'Concord Blue' File:Streptocarpus leaves showing abcission line.JPG, A mature rosulate variety of ''Streptocarpus'' showing new winter abscission lines File:Streptocarpus leaf with abcission line.JPG, Close-up of a ''Streptocarpus'' leaf showing winter abscission line File:Peloric Streptocarpus flower.jpg, Left: A normal zygomorphic ''Streptocarpus'' flower. Right: An aberrant
peloric Floral symmetry describes whether, and how, a flower, in particular its perianth, can be divided into two or more identical or mirror-image parts. Uncommonly, flowers may have no axis of symmetry at all, typically because their parts are spirall ...
''Streptocarpus'' flower. Both of these flowers appeared on the ''Streptocarpus'' hybrid 'Anderson's Crows' Wings'. File:Root plantlet of Streptocarpus 'Dales Polar Lava'.jpg, Root plantlet of ''Streptocarpus'' 'Dale's Polar Lava' File:Root plantlet on Streptocarpus 'Gloria'.JPG, Root plantlet on ''Streptocarpus'' 'Gloria'


References


External links

* *
''Streptocarpus'' Info

The Gesneriad Reference Web

The British ''Streptocarpus'' Society

The Gesneriad Society (including societies and the international registry for ''Streptocarpus'' hybrids)
{{Taxonbar, from=Q159180 Gesneriaceae genera Garden plants House plants