Aponogeton appendiculatus

Aponogeton appendiculatus H.Bruggen, Blumea 16: 265 1968. ;
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W. & S. India, Bangladesh (from WCSP);
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Perennial water-plants, 40-150 cm high. Tubers up to 2 cm across, oblong or globose. Leaves all submerged, 30-80 x 2.5 – 4.5 cm, oblong-lanceolate, base narrowly cuneate, margins undulate, apex acute or acuminate, mature leaves purplish; petiole 10-25 cm long. Spikes 3-12 cm long (fruiting spike upto 35 cm long), cylindrical, densely flowered; spathe 2-5 cm long, conical, acuminate, calyptrate, 6-7-sided, angles winged, caducous; peduncle 40-135 cm long, narrowed at base and gradually thickening towards apex, dark brown. Flowers 4-5 mm across, in groups about 4. Tepals 2, white with pink tinge, 2-2.5 x 2-2.5 mm, obovate or suborbicular, base cuneate, apex obtuse, fleshy, persistent. Stamens 5-6; filaments 1-1.5 mm long, widened towards the base, white, persistent; anthers c. 0.5 mm long, ovoid, yellow. Ovaries 2-3, 1-1.5 x 1-1.5 mm, conical; ovules 1 or 2. Fruit 0.8-1.5 x 0.5-1 cm, conical, with scattered blunt spines, base violet, apex beaked. Embryo very unusual, 0.7-1.2 x 0.3-0.6 cm, obovate, tuberous, crowned with a whorl of linear tortuous appendages of 3-5 mm long.

Flowering and fruiting: July-March
Ponds and ditches
Southern Western Ghats
(Attributions- Dr. N Sasidharan (Dr. B P Pal Fellow), Kerala Forest Research Institute, Peechi from  India Biodiversity Portal)
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Aponogeton appendiculatus : 1 post by 1 author.

Aponogeton appendiculatus (aponogetonaceae).

Kumarakom, Kerala, 2015 May

When we took boat ride in lake near Kumarakom i’ve collected this plant floating near shore 
Thanks to … for identifying this beautiful plant.
A. appendiculatus is endemic to the coastal region of the Kerala and Tamil Nadu States of India.
It grows in brackish water streams of 1 − 1.5 m depth in the vicinity of the sea.
It can be distinguished from other Indian Aponogeton species by its brackish water habitat

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GIB_250812_01_id request: Forwarding the photos of Arola plant from Vembandu lake collected by CERC project assistant Mr.K.M.Puvu.This plant can be seen almost all parts of Vembanadu lake. Only the underground part will survive when salinity increases.

I am forwarding a mail with attachments of pictures of a water plant from Vembanad Lake near Alappuzha.

I was wondering whether this is a species of Echinodorus of Alismataceae family?
I request all my friends in the group to help in iding this plant.
I suggested my student … to work on some ecological aspects of this plant for her MSc project.

  I dont know much about Echinodorus. For me,it looks like Cryptocorine of Araceae. The gelly like thing could be spawn of some organism which could be interesting.

Could be Cryptocryne and those jelly like things could be algal communities or asexual reproductive phase.

Jelly like substance looks like Snail eggs.

This is Aponogeton appendiculatusi have collected this species in Vembnaad lake in 2015 only species of Aponogeton which occurs in brackish water lake

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