Hygroryza aristata

Hygroryza aristata (Retz.) Nees ex Wight & Arn., Edinburgh New Philos. J. 15: 380 1833. (Syn: Leersia aristata (Retz.) Roxb.; Pharus aristatus Retz.; Pharus natans Russell ex Steud. [Invalid]; Potamochloa aristata (Roxb.) McClell. (Unresolved); Potamochloa retzii (Spreng.) Griff.; Zizania aristata (Retz.) Kunth; Zizania retzii Spreng.);

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Indian Subcontinent to S. China and Ind-China, Taiwan: Assam, Bangladesh, Cambodia, China South-Central, China Southeast, Hainan, India, Laos, Myanmar, Nepal, Pakistan, Sri Lanka, Taiwan, Thailand, Vietnam as per POWO;
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Common name: Asian Watergrass • Assamese: ফুটকী Phutki • Bengali: উরিধান Uridhan • Hindi: जंगली दाल Jangli dal, तिल्ली Tilli, Tini • Kannada: juarahumedhe, jyarahu medhe, kaadu bili sajjabu hullu • Malayalam: nir-valli-pulli, nirvallippulu • Marathi: Devbhaatha, Devbhata • Nepali: नवो धान Navo dhan • Sanskrit: aranyadhanya, aranyajali, munidhanya • Tamil: Vallippul • Telugu: Erra changala gaddi
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Annuals. Culms 10-45 cm long, floating; nodes bearded. Leaves 2.5-7.5 x 0.6-2 cm, ovate-oblong or lanceolate, base cordate, apex acute or obtuse, glaucous beneath; sheaths to 6 cm long, expanded, spongy, forming floats. Panicles 3.5-6 cm long, lax; pedicels with a red band below the middle. Spikelets 6-8 mm long, lanceolate, 1-flowered. Glumes wanting. Lemma 6-8 x 1-3 mm, lanceolate, acuminate, chartaceous, awned; awns 0.7-1.2 cm long, scabrid. Palea 6-8 x 1-2 mm, elliptic-lanceolate, keels scabrid or ciliate. Stamens 6. Grain oblong.

ID Help requested SP02216 : 3 posts by 2 authors. Attachments (1)

Can anybody help me with the identification of floating hydrophyte having red stock in the picture.

The photo was taken in one of the lake in Raigad district.

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It appears Hygroryza aristata, an aquatic grass.

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Aquatic Grass for ID : 4 posts by 3 authors. Attachments (1)- 992 kb.

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Maybe take a look at Dulichium?

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References:
POWO  The Plant List Ver.1.1  WCSP  RBG Kew: GrassBase  India Biodiversity Portal  Flowers of India