Alligator weed, pig weed • Manipuri: ফকচেত Phakchet;
Aquatic perennial herb often also growing on wet soils; stems procumbent to ascending, often swollen; leaves lanceolate to obovate up to 7 cm long, up to 2 cm broad, apex mucronate; flower heads on long peduncles; bract and bracteoles half as long as tepals; tepals nearly equal, white, 5-6 mm long; stamens with filaments connate into a cup pseudostaminodes longer than stamens, lacerate.


Attaching here a small sized pic of another aquatic plant that i thought was the same as this one (with the monkey-puzzle-butterfly). but this attached pic doesn’t tally with yours shots.

This plant is clearly distinct from the one in your previous post.

Yes Sir, it is another species, your document tells me so. But, as i said earlier, i thought both were same. However, i will post a seperate document seeking ID of this one too.

the uploaded herb photo is of Alternanthera philoxeroides (Mart.) Griseb. from Amaranthaceae family.

I think … got it correct FOI


Aquatic plant from Chennai -2:
Location: Chennaipolluted rivers/lakes
Date : October 2011


Alternanthera philoxeroides from Hooghly:

This very common herb seems to be the Alternanthera philoxeroides (Mart.) Griseb. I have an earlier upload of this plant which was identified by Rajdeo Ji. Moreover, … discussed it very recently.
H & H : small aquatic herb, also in ditches and moist place, very common
Date : 19/11/12 (in pond) & 20/11/12 (last four pics in roadside drain)
Place: Hooghly

A correction, this can be long, 2 feet or more when in ponds.

Yes … Nice photographs

AMARANTHACEAE-CHENOPODIACEAE week: Alternanthera philoxeroides:  Alternantheragenus is represented by 11 naturally occurring species in India. Most of them are weedy in nature. Enclosing here pics of A.philoxeroides which is a common weed along water channels here in Pantnagar (Uttarakhand).

The young shoots are said to be edible. It is also known to accumulate heavy metals.

Very nice pictures with great details!


Chenopodiaceae and Amaranthaceae Week: NS 007: Alternanthera philoxeroides from Kaithal: This aquatic weed was shot from a village pond in 2012… Alternanthera philoxeroides (Mart.) Griseb. the alligator weed

Yes … Very good photographs

Thanks for sharing these beautiful photographs. This species is one of the most predominant invasive plants in the world. It is available in the markets of West Bengal as leafy vegetables and locally known as “Chhenchi shak” and has really good taste.

yes. a bad weed. some eat it, but at their own peril
it supposedly concentrates heavy metals in shaloow water ways or canals…
only a very large BW beetle eats it… in nature…. could be a famine food…
have not seen it in neighbourhood markets in south 24 paraganas’cities,
but as … says it must be available in local areas where it grows….  Thanks … for the name

This is a very bad weed… must be eradicated where found…
please read pg 12 of this pdf from Australia dept of BIOSECURITY
I was distrubed by the numbers in reduction in crop production due to this weed in china… pg 12 of pdf or sec1:10 in its own parlance….
we dont have a dept of BIOSECURITY do we?

its other name is ALLIGATOR WEED. WONDER WHY?

I have no knowedge of this being used as a food here in our state …only considered a weed… usually cannot compete with Eichhornia which overpowers this….. Alligator may be due to its dominating nature….

It can invade mid Himalayan hills along water channels. I have recorded it from 1400m altitude near Naini Tal, Uttarakhand.



Chenopodiaceae and Amaranthaceae Week: Alternanthera philoxeroides (Mart.) Griseb from Delhi and Bhimtal: Alternanthera philoxeroides (Mart.) Griseb., Abh. Königl. Ges. Wiss. Göttingen. 24: 36. 1879.

Syn: Telanthera philoxeroides (Mart.) Moq.; Achyranthes philoxeroides (Mart.) Standl.; Bucholzia philoxeroides C. Mart.
Common name: Aligator weed
Aquatic perennial herb often also growing on wet soils; stems procumbent to ascending, often swollen; leaves lanceolate to obovate up to 7 cm long, up to 2 cm broad, apex mucronate; flower heads on long peduncles; bract and bracteoles half as long as tepals; tepals nearly equal, white, 5-6 mm long; stamens with filaments connate into a cup pseudostaminodes longer than stamens, lacerate.
Photographed from Delhi and Bhimtal


Chenopodiaceae and Amaranthaceae Week : sk-14 : Alternanthera philoxeroides (Mart.) Griseb.:  This is Alternanthera philoxeroides (Mart.) Griseb., previously identified in efi thread.

Yes … Excellent photographs.

Thank you very much for appreciating, i could macro it from very close.

Chenopodiaceae and Amaranthaceae Week :: PKA11 : Alternanthera philoxeroides at Nagpur:  Came across this aquatic herb from “Amaranthaceae family” at Nagpur.
Bot.Name: Alternanthera philoxeroides

Yes … Nice photographs


Chenopodiaceae and Amaranthaceae Week: BS16: Alternanthera philoxeroides from Lohari: Alternanthera philoxeroides from Lohari

Yes … Very good photographs.


Alternanthera philoxeroides (Mart.) Griseb from Assam-Jan 2014 :  Attachments (6). 3 posts by 3 authors.

Attached images are Alternanthera philoxeroides (Mart.) Griseb.
Date :08.11.2013
Location: Assam
Family : Amaranthaceae
Genus & species : Alternanthera philoxeroides (Mart.) Griseb
Habitat: Grows wild on road side

Habit : Herb

Lovely pics, thanks …

It is a rapidly spreading alien species from Americas. A potential threat to native vegetation, this alligator weed, has invaded many moist areas in Uttarakhand up to 1500m altitude

Requesting to please validate ID of this plant captured near Dharamshala, HP in October 2014.

I hope this is Alternanthera philoxeroides based on the images in FoI.

Yes it is A. philoxeroides.
White Flower Headland of Myanmar : 5 posts by 3 authors. 2 images.

At first sight I thought of a flower of Allium … but that is not it! And I have not found anything!

Photos taken on the 22-10-2016, altitude 885met., To Sagar, Shan State, Myanmar

If you are more inspired than me thank you for helping me!

Alternanthera philoxeroides I think…

Thank you for this answer that seems perfectly!

I will not ps “look for this flower in the Amaranthaceae!


Alternanthera philoxeroides ABJUL2017/26 : 5 posts by 3 authors. Attachments (11)
I saw this plant unfamiliar to me this morning and assumed at first that it was a Polygonaceae. I now think that this is Alternanthera philoxeroides. Please correct me if I am wrong.
Alternanthera philoxeroides
Near Dal Lake, Dharamshala, HP
23 July 2017

Yes, the id is correct …!!

Identification Request : 6 posts by 3 authors. Attachments (4)- 1 Mb each.

Kindly identify the following plant.

Date: 9 JUL 2018
Place: Agara lake, Bengaluru
Wild growth on banks
My wild guess: Symphyotrichum

Alternanthera sp

Thanks for the clue. I am grateful to you.

It can be Alternanthera philoxeroides.
In my photos the flowers are not opened yet except one or two. May be I will observe the plant after few days.

Thank you for your suggestion.  I checked it.
It can be Alternanthera philoxeroides.


ALTERNANTHERA PHILOXEROIDES : 3 posts by 3 authors. Attachments (1)

Attacjing a collage of Alternanthera philoxeroides (ALLIGATOR WEED).

This invasive weed is native of South America.


For ID 10072019RK-2-Please help in identification : 4 posts by 3 authors. Attachments (1)
Kindly help in identification of this. It is a green leafy vegetable.
Local name-Kauwa sag
Date-1st july, 2019
Place-Khunti, Jharkhand

Seems to Alternanthera sp. But not sure, if you have any flower pics. Send please.

Appears close to images at Alternanthera philoxeroides (Mart.) per comparative images at Alternanthera


Extended Naturalization Record of Amaranthaceae species (Alternanthera philoxeroides (Martius) Grisebach) to Andhra Pradesh, India : pdf: Paradesi Anjaneyulu & Boyina Ravi Prasad Rao- Bioscience Discovery, 11(4):191-194, Oct – 2020-

if you would share these articles to our colleges and save the information in e flora of India.
id please Barasat,wb 03.12.16 : 4 posts by 2 authors. Attachments (1)

id please Barasat, Wb 03.12.16

Any other images ?

You should have take clear image of flower also.

Appears close to Alternanthera philoxeroides (Mart.) Griseb. 

Yes it’s only …


Fwd: ID please….. as early as possible : Attachments (5). 2 posts by 2 authors.
Please let me know the Botanical name or any clue of the attached photographs
This is a vegetable commonly called as “KOLSHYACHI BHAJII” or ‘Kolse ki Sabji’
I am unable to identify ……
[ Photos by: …]

Looks like Alternanthera philoxeroides (AmaranthaceaeAlligator weed growing along water channels.

You’re right …,  It’s Alternanthera philoxeroides only,



Plant for ID-PC-13-06.10.2015 : 1 post by 1 author. Attachments (2)
here is a plant from Uttarakhand. Please identify it.

Alternanthera philoxeroides



aquatic plant for ID070311AMS2:
aquatic plant from bhopal

Please allow these plants to flower and then upload them, with a close up of flower. It would help in confirming identification.

Viburnum erubescens ??

Alternanthera philoxeroides


Swamy/New series/ID/43 – ID of an aquatic plant: 4 images.
Please ID the aquatic plant photographed in Chennai during 1st week of  October in Chennai. Photos received from a friend for ID. Quality of the photographs is not good. Sorry.

Alternanthera philoxeroides (Mart.) Griseb.

You’re right …


Large flowered alternanthera ID: 2 images.
Need help

Edge of lake; black soil

Alternanthera philoxeroides (Mart.) Griseb.

Yes it is A. philoxeroides


I’d of Alternanthera: 2 high res. images.
Request for I’d of Alternanthera (possibly) growing in aquatic conditions from Bilaspur. Photographed in November, 2022.

Alternanthera philoxeroides (Mart.) Griseb.


Yes, as per images at—l/a/amaranthaceae/alternanthera/alternanthera-philoxeroides


SK 3808 July 2023: 3 high res. images.

Location: Barsha Tal, Dhorpatan, Baglung, Nepal 
Date: 31May 2023
Elevation: 2900 m.

Habit : Wild

Pic 1. Utricularia sp.

Pic 2. Alternanthera philoxerroides
Pic 3. Utricularia sp.