Browallia americana (Introduced)

Browallia americana L., Sp. Pl. 631 1753. (Syn: Browallia americana f. alba Stehlé …; Browallia cordata G.Don; Browallia demissa L.; Browallia dombeyana Dammer; Browallia elata L.; ….; Browallia viscosa Kunth; Nierembergia petunioides Dunal ….);
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Central Mexico to Tropical America: Bolivia, Colombia, Costa Rica, Cuba, East Himalaya, Ecuador, El Salvador, Guatemala, Honduras, Jamaica, Leeward Is., Mexico Central, Mexico Gulf, Mexico Southeast, Mexico Southwest, Nicaragua, Panamá, Peru, Puerto Rico, Trinidad-Tobago, Venezuela, Windward Is.; Introduced into: Assam, Bangladesh, Brazil Northeast, Brazil South, Brazil Southeast, Cameroon, Dominican Republic, Fiji, Galápagos, Gulf of Guinea Is., India, Jawa, Kenya, Malawi, Malaya, Mauritius, New Caledonia, New Guinea, Nigeria, Queensland, Réunion, Sulawesi, Tanzania, Uganda, Vietnam, Zambia, Zaïre, Zimbabwe as per POWO;
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Common name: Bush Violet, Browallia, Amethyst Flower

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Solanaceae week- Browallia elata- PKA1:
Bot. name: Browallia elata (Solanaceae family) .
Location: Munnar- Kerala

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– Are they two separate plants or the same flowers changing colour?

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– Not very familiar with this plant but I have dowloaded and enlarged calyx of second white flower. I am attaching the same. I may venture to say that it could be B. viscosa ‘Alba’

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– Just found out Both B. elata L. and B. viscosa HBK are now synonyms of B. americana L.
    So unless second turns out some thing else first and third photographs belong to B. americana L. and second to B. americana cv Alba

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Herb from Ooty for identification 160311MK2:
Please help to id this herb found in a private garden of Ooty, Nilgiris.

Date/Time- 24-01-2011 / 11:15 PM
Location- Place, Altitude, GPca.2200asl; Ooty, TN
Habitat- Garden/ Urban/ Wild/ Type- garden
Plant Habit-herb
Height/Length- 30 cm long
Leaves Type/ Shape/ Size- ca.5 x 3 cm;
Inflorescence Type/ Size- Raceme
Flowers Size/ Colour/ Calyx/ Bracts- c. 2 cm across

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04/06/2013 ASP 40 : Attachments (1). 4 posts by 3 authors.
Can you please ID this ornamental herbaceous plant with blue flowers. Photo was taken in a garden in the central district in Sri Lanka in March 2012.

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A guess.. Could be Browallia americana, common name Amethyst Flower.
I had seen in Kodai.

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Solanaceae Fortnight : Browallia americana : Sri Lanka : 25FEB15 : AK-30: 2 posts by 2 authors. Attachments (1)
An ornamental plant seen in Sri Lanka.
Common name Bush Violet, Amethyst Flower.

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References:
POWO  Catalogue of Life  BSI Flora of India Checklist  Flora of peninsular India  Flowers of India