Yes Vijayasankar,
From your description and the name it is likely to be
Citrus reticulata Blanco '
Kamala'
The name
கமலாப்பழம் is often found but only applied to the species
Citrus reticulata Blanco. That's fair, however "Kamala" is a cultivar. One can see a parallel with the Mosambi story.
A cultivar name is transferred to the species, and then other species for all sorts of twisted reasons.
Here is what I have compiled. I leave it up to the experts in the group to cross out the wrong names and / or correct the spelling mistakes.
Citrus reticulata
Blanco 'Kamala'
ASSAMESE : Sumothira.
BENGALI : কমলা Komala
(Kamalā), কমলা গাছ
Kamalā gācha, কমলালেবু Komalalebu
(Kamala leboo, Kamalālēbu), কমলালেবু গাছ Kamalālēbu
gācha (tree), কমলালেবুর গাছ Kamalālēbura
gācha (tree), নাগরঙ্গ Nāgaraṅga
নারঙ্গ Nāraṅga নারাঙ্গা Nārāṅgā
নারাঙ্গি Nārāṅgi
সান্তারা Sāntārā
সান্তোলা Sāntōlā.
ENGLISH : Kamala orange, Orange.
GUJARATI :
નારંગી
Naarangii (
naarNgii), સંતરા Santaraa,
Santra.
HINDI :
कमला Kamalā, Kamla,
Kaula,
कौंला Kaunla,
संतरा Santara,
Santra.
KANNADA : Kittale.
NEPALESE :
कमला Kamalaa,
सुन्तला
Suntalā.
ORIYA : Kamala.
MARATHI : Santre.
SANSKRIT :
कमला Kamalaa
(Kamlaa), Kamalaa niibuu.
TAMIL :
கமலா Kamalā,
கமலாப்பழம்
Kamalāppaḻam .
TELUGU :
కమలా పండు Kamala
pandu (Kamalā paṇḍu).
Please let us know also if any of those names are applied to other species or cultivars.
Thanks