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Spirodela polyrhiza (L.) Schleid. from Hooghly:

According to the “Plant Groups”, a college text book, Spirodela polyrrhiza L., is a common floating herb; and according to wiki “polyrrhiza” is a orthographical variant of polyrhiza”!
Habit & Habitat : aquatic herb in a pond
Date : 30/8/12, 12.17 p.m.

Place : Garalgacha (Hooghly)


but these leaves are growing in some mathematical precision pattern…

tumi paro baba. first grasses
now aquatics


Charpasher soundarya ekhon hoyto ektu adhtu andaz korte parchi.



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Earlier post – efi thread



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Spirodela polyrhiza (L.) Schleid. is a common winter/spring aquatic weed in Pantnagar.



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Please help in the ID of Lemna sp. photographed from our College pond in Delhi.


All these are Spirodela polyrhiza (L.) Schleid.



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Lemna japonica Landolt, Veröff. Geobot. Inst. E.T.H. Stiftung Rübel Zürich. 70: 23. 1980.

Supposed to be differing from L. minor in intense red fronds beneath. Pl. validate. Photographed from Dal Lake Kashmir. Now placed in Lemnaceae.


It appears in the pictures that fronds have many roots underside. Lemna is described as having 1 or 2 roots only, more than 2 roots indicate towards Spirodela.


These are Spirodela polyrhiza (L.) Schleid.



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Attachments (3).

This floating hydrophyte is very common..
Please suggest id..
Is this Spirodela polyrhiza..??


Yes, Spirodela polyrhiza.


Thanks a lot … for confirming…



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Araceae, Arecaceae and Zingiberaceae Month: Araceae- Spirodela for id:: NS Aug 33 : 4 posts by 3 authors.

Attachments (3).

This was reported from a water body with stagnant water..
Is there mixing up of Spirodela and Lemna..??
This seems to be a different species looking upon striated leaves.. please give your valuable comments…


Very nice pictures …! I think it is Spirodela polyrhiza.



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Araceae, Arecaceae and Zingiberaceae Fortnight: August 1 to 14, 2014 : Araceae : Lemna minor : For Validation : Mumbai : 300814 : AK-121 : 3 posts by 2 authors. Attachments (2).

Seen floating in a pond at Jijamata Udyan, in August,2014.

Kindly validate.


efi page on Lemna minor


These are Spirodela polyrrhiza (L.) Schleid.



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Aquatic plant for identification -1: Can you identify the small leaved free floating aquatic plant. I guess it is Wolffia, pls confirm. And also identify the species.
Location: Chennai
Date : October 2011


I m sorry for the large file size. I will reduce the photo with better programs next time. My other guess for this plant is is Lemna sps.


It may be Spirodela polyrhiza (Araceae). Fronds purplish beneath; and roots are many as seen in the posted picture.


I think there are more than one species floating there which is not so unusual.
Lemna, Spirodella, Wolffia…..
Please check…


Yes there are many species. But I am aiming at what … metioned as Spirodella polyrrhiza.
Here’s one more close up of the same plant.


 


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References:

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