Lagenandra ovata

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¿ lag-en-AN-druh ? — from the Greek lagenos (flask) and andros (man) … Dave’s Botanary
oh-VAY-tuh — ovate in shape … Dave’s Botanary 
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commonly known as: Malayan sword • Kannada: ¿ ಕೋಮಣ ? ಗೆಡ್ಡೆ komana gedde, ನೀರ ಕೂವೆ neera koove • Malayalam: കരിന്പോള karinpeala • Marathi: वत्सनाभ vatsanabh • Sanskrit: हल्लकम् hallakam • Tulu: ನಿರ್ಕೂವೆ neerkoove 
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ID request -150311-PKA1:
I had seen this small aquatic herb at a stream near Karikale, North Karnataka.

Date/Time: 17-01-2011 / 11:30AM
Location: Karikale, North Karnataka
Habitat: Wild
Plant Habit: Herb, (aquatic) around 25 to 30cm
Leaves around 10 – 12cm, undulate, petioles around 10 to 15cm.
Flowers not seen.

Looks like Ottelia alismoides to me.

Yes I agree with … that it is Lagenandra ovata of Araceae family.

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Names of Plants in India :: Lagenandra ovata (L.) Thwaites:
via Species‎ > ‎L‎ > ‎  Lagenandra ovata (L.) Thwaites … family: Araceae

Flowers of India Discussions at efloraofindia more views in flickr more views on Google Earth
¿ lag-en-AN-druh ? — from the Greek lagenos (flask) and andros (man)
oh-VAY-tuh — ovate in shape … Dave’s Botanary
commonly known as: Malayan sword • Kannada: ¿ ಕೋಮಣ ? ಗೆಡ್ಡೆ komana gedde, ನೀರ ಕೋವೆ neera kove • Malayalam: കരിന്പോള karinpeala • Marathi: वत्सनाभ vatsanabh
botanical names: Lagenandra ovata (L.) Thwaites … synonyms: Arisarum ovatum (L.) Raf. • Arum ovatum L. • Caladium ovatum (L.) Vent. • Cryptocoryne ovata (L.) Schott • Lagenandra insignis Trimen … The Plant List (2010). Version 1
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Photographed along Mattighatta Road, Karnataka on 15 DEC 12
Many thanks to … for the ID.

Names update …

 • Tulu: ನಿರ್ಕೂವೆ neerkoove 

I think you have used FRLHT words i.e. koomana gedde, neer kove  for Kannada transliteration/ translation using google translation link. In my view the  words ‘ಕೋಮನ ಗೆಡ್ಡೆ , ನೀರ್ ಕೋವೆ’ are more appropriate. Nevertheless, it is left to your discretion to use these wordsor retain those in your posting.

Google translation is not perfect … More often than not, it is subject to correction by those who know Kannada.

Many thanks, dear Mahadewara ji, for validating the Kannada names.
I depend on https://alar.ink/ for checking possibilities of any given names in Kannada.
I will use ನೀರ್ ಕೋವೆ for neer kove as you have pointed out.
About ಕೋಮನ and ಕೋಮಣ …
at https://alar.ink/ … only the latter (ಕೋಮಣ) is listed, with the meaning as loin cloth. ಕೋಮನ is not listed.
Searching ಕೋಮನ and ಕೋಮಣ in Google, ಕೋಮನ does not give relevant results, while ಕೋಮಣ does.
I think we will go with ಕೋಮಣ.
What are your thoughts?

I did not pay attention to ಕೋವೆ in your suggestion.
ಕೋವೆ =
  1. the creeping plant Galedupa arborea.
  2. its flower.
  3. the creeper Coccinia cordifolia ( = C. indica, = Bryonia grandis, = Momordica monadelpha) of Cucurbitaceae family.
  4. the climbing shrub Bryonia epigea of Cucurbitaceae family.
and few more meanings, not relevant to plants.
ಕೂವೆ =
  1. the plant Curcuma angustifolia of Zingiberaceae family, with large leaves, white flowers, and starchy roots; East Indian arrowroot.
  2. the plant Maranta arundinaceae of Marantaceae family.
and a few more meanings.
In the reference:
… neeru koove = water arrowroot, named so due to its aquatic habit and resemblance with Maranta and Curcuma species.
Let us therefore go with ನೀರ್ ಕೂವೆ for neeru koove.
¿ lag-en-AN-druh ? — from the Greek lagenos (flask) and andros (man) … Dave’s Botanary
oh-VAY-tuh — ovate in shape … Dave’s Botanary

commonly known as: Malayan sword • Kannada: ಕೋಮಣ ಗೆಡ್ಡೆ komana gedde, ನೀರ್ ಕೂವೆ neeru koove • Konkani: वत्सनाभ vatsanabh • Malayalam: അണ്ടവാഴ andavaazha, കരിന്പോള karinpola • Marathi: वत्सनाभ vatsanabh • Sanskrit: हल्लकम् hallakam • Tamil: நீர் கூவை neer koovai • Tulu: ನಿರ್ಕೂವೆ neerkoove
botanical names: Lagenandra ovata (L.) Thwaites … homotypic synonyms: Arisarum ovatum (L.) Raf. • Arum ovatum L. • Caladium ovatum (L.) Vent. • Cryptocoryne ovata (L.) Schott … heterotypic synonyms: Lagenandra insignis Trimen … POWO

Bibliography / etymology
Links listed as references in the notes below, may not remain valid permanently. Portals / websites have a tendency to re-organize / revise their content, leading to change in URLs of pages in their site. Some sites may even close down at their own will.

~~~~~ ENGLISH ~~~~~
Malayan sword
~~~~~ KANNADA ~~~~~
ಕೋಮಣ ಗೆಡ್ಡೆ komana gedde
ನೀರ್ ಕೂವೆ neeru koove
  • Many thanks to Dr Mahadeswara Swamy for help with this name … efloraofindia
~~~~~ KONKANI ~~~~~
वत्सनाभ vatsanabh
  • name borrowed from Marathi, for want of name
~~~~~ MALAYALAM ~~~~~
അണ്ടവാഴ andavaazha
കരിന്പോള karinpola
~~~~~ MARATHI ~~~~~
वत्सनाभ vatsanabh
  • Further Flowers of Sahyadri by Shrikant Ingalhalikar, the second among the three field guides to identify plants of northern Western Ghats of India, based on flowers
~~~~~ SANSKRIT ~~~~~
हल्लकम् hallakam
~~~~~ TAMIL ~~~~~
நீர் கூவை neer koovai
  • Many thanks to Dr Vijayasankar Raman for coining this name … efloraofindia
~~~~~ TULU ~~~~~
ನಿರ್ಕೂವೆ neerkoove
~~~~~ DISTRIBUTION in States and Union Territories of India ~~~~~
Goa, Karnataka, Kerala, Maharashtra, Tamil Nadu
~~~~~ x ~~~~~
Names compiled / updated at https://dineshvalke.blogspot.com/2023/07/lagenandra-ovata-l-thwaites.html

Both Malayalam and English spelling are correct.

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Araceae, Arecaceae and Zingiberaceae Fortnight: Araceae-:: Lagenandra ovata from Karnataka :: PKA11: : 1 post by 1 author. Attachments (3).
I had seen this small aquatic herb at a stream near Karikale, North Karnataka.
Date/Time: 17-01-2011 / 11:30AM
Location: Karikale, North Karnataka
Habitat: Wild
Plant Habit: Herb, (aquatic) around 25 to 30cm
Leaves around 10 – 12cm, undulate, petioles around 10 to 15cm.
Flowers not seen. Bot. name: Lagenandra ovata

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Tamil name for Lagenandra ovata (L.) Thwaites:

Please help me coin a name for Lagenandra ovata (L.) Thwaites in Tamil.
It is distributed in Tamil Nadu as per BSI.
On lines of name given in Kannada (ನೀರ ಕೂವೆ neera koove), Tulu (ನಿರ್ಕೂವೆ neerkoove) … literal meaning = water arrowroot, named so due to its aquatic habit and resemblance with Maranta and Curcuma species, I am thinking of நீர்அருருட்டு nir-aruruttu. Please help.
The name  அருருட்டு is just a (modified) transliteration of the English name Arrowroot and not a proper Tamil name.
I think நீர் கூவை Neer koovai or நீர் கூகை Neer koogai would be more appropriate for Lagenandra ovata. Koovai or Koogai are Tamil names for Maranta arundinacea, a similar-looking plant.
Note: I noticed that in some databases (FoI, FRLHT-ENVIS), the name Maravara tsjembu is erroneously listed as a Tamil name for Lagenandra ovata. This is a “Latin” name (now a synonym) originally applied to Remusatia vivipara in Hortus Malabaricus.  
Thank you very very much, …, for help.
Among the two options, I will take நீர் கூவை Neer koovai … it is closer to Kannada and Tulu names.
Yes, I had seen the Malabari name Maravara tsjembu in  FRLHT-ENVIS … I knew it was placed wrongly for Tamil.

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References:

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