Ludwigia perennis L., Sp. Pl. 1: 119 119 1753. (syn: Isnardia jussieuoides Kuntze; Isnardia multiflora Guill. & Perr.; Isnardia parviflora (Roxb.) Kuntze; Jussiaea caryophyllaea Lam.; Jussiaea maderaspatana Steud.; Jussiaea perennis (L.) Brenan; Ludwigia caryophyllea (Lam.) Merr. & Metcalf; Ludwigia gracilis Miq.; Ludwigia humbertii Robyns & Lawalrée; Ludwigia jussiaeoides Wall.; Ludwigia lythroides Bl.; Ludwigia multiflora Walp.; Ludwigia nesaeoides H. Perrier; Ludwigia oppositifolia L.; Ludwigia parviflora Roxb.; Ludwigia zeylanica Pers.; Oenothera quadricolumnata Noronha);
Common name: Perennial Water Primrose, paddy clove • Kannada: kaere bandu gida, kere bendu gida • Malayalam: Neerkarayambu • Tamil: musalkathilai • Telugu: lavanga kaaya
China (Fujian, Guangdong, Guangxi, Hainan, Yunnan), Taiwan, Bangladesh, India, peninsular Malaysia (Perak, Selangor), Andaman Isl. (South Andaman Isl.), Bhutan, Darjeeling, Myanmar [Burma] (Yangon), Nepal, Pakistan (Hazara), Thailand, Cambodia, Laos, Vietnam, Philippines (throughout), Sulawesi, Lesser Sunda Isl., Moluccas, New Guinea, Bismarck Arch., Solomon Isl., Sumatra, Sri Lanka, Afghanistan (Laghman, Nangarhar), Japan (Honshu), New Caledonia, Java, Australia (N-Western Australia, Northern Territory, Queensland), Senegal, Mali, Burkina Faso, Chad, Sudan, South Sudan, E-D.R.Congo (Zaire), Central African Republic, Uganda, Kenya, Tanzania, Zambia, Zimbabwe, Malawi, Mozambique, Swaziland, Madagascar, Botswana, Benin, Togo, Tajikistan (I), Uzbekistan (I) as per Catalogue of Life;
India (throughout), Afghanistan, Africa, Japan, New Caledonia, Sri Lanka, Tropical Asia to subtropical China and Tropical Australia as per The Genus Ludwigia (Onagraceae) in India by I.C. Barua- Rheedea Vol. 20 (1) 59-70 2010;
As per efi thread :
In L. octovalvis the sepals are 0.5-1.2cm long, petals are 0.6-1.8cm long whereas, in L. perennis it is less than 0.5 cm for both sepals and petals;


Erect herbs. Leaves 2-6 x 0.5-15 cm, elliptic-lanceolate, base attenuate, apex acute to acuminate, glabrous. Flowers sessile, 4-merous. Calyx tube adnate to ovary; lobes 4, c. 2 mm long, ovate acuminate. Petals 4-5 mm long, elliptic, yellow. Stamens 4; filaments short. Ovary 1-1.5 cm long, linear, 4-celled, 4-angled. Ovules many. Capsule 1-2 cm long, linear, subterete, 4-ribbed. Seeds ellipsoid.
Flowering and fruiting: Throughout the year
Waterlogged areas in grasslands
Tropical Africa, Asia and Australia



herb for id mm1 16102011: 2 images.

very small flowers
no bigger than 3 or 4 mm

would very much appreciate an id

Looks like Ludwigia octovalvis

This is Ludwigia perennis of Onagraceae family.

It is interesting
Whether it is Ludwigia octovalvis or Ludwigia perennis ? Only significant difference between the two what I noticed from the literature is that the small petiole is winged in L.perennis.
…. Can you check this in your plant as it is not appreciated in the given picture.
Otherwise the plant looks close to Ludwigia octovalvis to me…

As per the key provided in this link ( and the description and illustrations therein shows that the stem leaf margin of L. octovalvis is hairy and the same for L. perennis is glabrous. In this pictures, though it is not very clear, seems that the plant is glabrous.
…. please check whether the plant is hairy or not.

Got some some more photographs yesterday
the plant seems glabrous
without a hint of purple

I still think that this is L. perennis.


I am not aware of the two species in detail. Attaching my pictures of the plant seen near water body near Kaas Plateau which was IDed as L.octovalvis  for comparison/Review again.

Is this a hairy plant or a glabrus one? Further in L. octovalvis the sepals are 0.5-1.2cm long petals are 0.6-1.8cm long whereas, in L. perennis it is less than 0.5 cm for both sepals and petals
Please refer this
If this is a glabrous plant with smaller flowers, I think this too is L. perennis.

I think you are right. That was the reason I posted the plant again.
This definitely is a glabrous plant but size wise I think it is closer to L.octovalvis.
Anyway can’t confirm now. Thanks for the analysis which would be useful when I might encounter similar plant again

the flowers of this ludwigia were tiny, no more thean 5mm at the maximum, so that seems to rule out L. octovalvis

Please refer the attached file.
If the flowers were so small I am sure that this is L. perennis.
One more important point that if the capsule is angular (4 angled) then the plant would be L. prostrata flowers are almost equal sized in these 2 species.

Many thanks for the article – never knew of L.decurrens, among a host of other things!!

Would I be correct in assuming that a erect plant 1.5m, flower >2cms,
leaves glabrous (also stem), sepals not hairy is L.deurrens?
saw this
plant at north end of sgnp very recently.


Ludwigia sp1 (?) ID Hooghly 16/9/12 SK2: 6 images.

Found this wild herb beside my home today.
Species : UNKNOWN
Habit & Habitat : small wild herb, less than 1 foot tall, stem glabrous, NOT wiged
Date : 16/9/12, 10.39 a.m.

Place : Hooghly

is that L.perrenis…?? For me it looks so…:-)

Thank you very much Sir for the ID of this Ludwigia species, found similar pictures at –






ludwigia perennis over the past few weeks

ID correction GOPALNAGAR,WB OCTOBER,2016 : 3 posts by 2 authors. Attachments (1)

Please tell me Whether it is Ludwigia octovalvis or perennis or Ludwigia hyssopifolia
I am confused.

workout done. L. perennis



Ludwigia prostrata @ Mumbai: Attachments (6)

I have identified the images posted as being Ludwigia prostrata following the keys in Rheedea Vol. 20 (1) 59-70 2010. Reference is available in thread ‘efloraofindia:89073’.
Must mention that the keys in Flora of China and Flora of Maharashtra are different but Rheeda reference is most recent & India specific.
Flora of Maharashtra does not mention this species so am not sure whether it is documented in Maharashtra.
Here’s my brief explanation for the id:
– Plant erect. (-894)
– Stem winged (-896), well branched & herbaceous throughout.
– Stem and leaves glabrous.
– Flower (-900): sepals 4, petals 4; sepal size 4-5mm, almost similar for petals also;
– Capsule: as seen (-909)
– Capsule and seeds (-903): as seen [uniseriate: arrangement of seeds in a single row]

Numbers in brackets above are the last three digits of the respective images.
Ruled out L. perennis as stem and branches were winged.
Ruled out L. linifolia as stem not woody at base.
Will be happy to visit the site again & / or provide additional information, if required.

Would you please mention the number of stamens in your plant?

Working on stamen number in existing images;
Will appreciate knowing whether you (or any other group member) concur with id minus the stamen number.

I agree with your points. Initially I thought how come your plant L.prostarta is erect but later I read the description which states that the plant is semierect.
… I can’t comment on the number of stamens from my images as the stigma is large similar to one in illustrations which is concealing the stamens in … pictures too.Sorry.

Whenever you happen see this plant next, please count the number of stamens by dissecting the flowers.

Number of stamens is crucial in confirming the id.

It is just impossible to count the number of stamens from pictures because they are almost adhered to the pistil (surrounding).
I had to sacrifice 4 flowers to get the actual count of stamens that I would upload later.
Still processing the id.

I am still waiting for the number of stamens in this plant if the number of stamens is not 4 in this plant then this is not L. prostrata.

BTW my plant also seems to have winged stem ….at least not cylindrical.

There is L. decurrens with 4-winged stem with 8 stamens and here we have L. prostrata, again 4-winged stem but with 4 stamens so what determines the species here?

Stamen count is four (4).
The plant is L. prostrata.

Four stamens, this is undoubtedly L. prostrata.

I think it should be Ludwigia perennis as per images and details herein and as per keys at Ludwigia.
Capsules here are not four angular, but terete as per keys.


Ludwigia octovalvis (Jacq.) Raven from Kamrup (Rural), Assam:

Attached images are Ludwigia octovalvis (Jacq.) Raven..
Date : 08.11.2012
Location:  Kamrup district (Rural), Assam
Family : Onagraceae
Genus & species : Ludwigia octovalvis (Jacq.) Raven
Habitat: Grows on bank of the pond
Habit :Shrub
Flower : Yellow in colour

I think it should be Ludwigia perennis as per images and details herein and as per keys at Ludwigia.


ARJUL21 Plant for ID : 6 posts by 2 authors. Attachments (1).
Found in Bangalore 13th July

This looks like Ludwigia octovalvis. Please check this link : Google Groups . Will send my more recent photographs of this later if required.

Thank you sir, but the petals in my photo seem to be acute tipped whereas the one you mentioned doesn’t seem so?

Habit photo: Attachments (1)

I think it should be Ludwigia perennis as per images and details herein and as per keys at Ludwigia. 



Photographed on my property at Shahapur. Any more doubts ?

Attachments (8)

None sir. Thank you very much for the photos and the id.

I think it should be Ludwigia perennis as per images and details herein and as per keys at Ludwigia.



for id request 121112 BRS: 2 images.

Pl. find the attached file contain photos for id. request.
Date: 30.10.2012
Location: Anamalai
Habitat: Wild (Road side)
Habit: Herb

Just guessing Cuphea platycentra.

The first two pictures are of Ludwigia sp., probably L. perennis

For me the first two photographs (ptr 2012.jpg, ptr 2.jpg) look like one of the Ludwigia species.


SGNP, Aug 2014 :: Requesting ID of this plant :: ARKSEP-11 :  4 posts by 3 authors. Attachments (1).

Requesting to please ID this plant captured at Kanheri Caves, SGNP in Aug 2014. Any Ludwigia species?

One such plant has been identified as Ludwigia hyssopifolia (G.Don) Exell in my uploads.

Thank you … for a possible ID… Hopefully experts validate it.

But I guess, this pic alone may not be helpful to arrive at an ID…

I think it may be Ludwigia perennis as per images and details herein and as per keys at Ludwigia


Plz id this herb: pa16 – 30oct2012: Plz id this herb from Yeoor region if possible. I think it was around 2 feet height but maybe taller also.

Ludwigia species

Thank you … I saw similar flower posted by … called Ludwigia perennis, is this the same?

I think it should be Ludwigia perennis as per images and details herein and as per keys at Ludwigia.


Plant for identification 15102013 : Attachments (2).  6 posts by 4 authors.

sending images of a plant growing in water logged area

This is a species of Ludwidgia possibly L.octovalvis.

efi page on Ludwigia octovalvis

Ludwigia species for sure, but would require additional info like number of stamens for sps level id.

Wholeheartedly endorse … view.

Additionally flower size and capsule features are also very important to minimize guesswork.

I think it should be Ludwigia perennis as per images and details herein and as per keys at Ludwigia.

Yes it is Ludwugia perennis.

Requesting to please ID this plant captured in a residential building compound in Mumbai growing wild in the rains in August 2013.

Is this Ludwigia perennis? Even the flower with 5 petals?

This is a species of Ludwigia possibly L.octovalvis.

looks like Ludwigia hyssopifolia

this looks Ludwigia parviflora.

efi pages onLudwigia perennis (Syn: Ludwigiaparviflora Roxb.), Ludwigia hyssopifolia, Ludwigia octovalvis

I think it may be Ludwigia perennis as per images and details herein and as per keys at Ludwigia

Need Help in ID : Specimen 01, Little Yellow Flower : 5 posts by 3 authors. Attachments (1) – 2 mb.
These two wild shrubs are flourishing in Aramnagar, Versova, Mumbai.
Need help in identifying it..
The flower is roughly 6mm in diameter.
(Is there a good book on identifying wild shrubs of Maharashtra?)

Both photographed today, May 21, 2019.

Ludwigia sp.

To me appears close to images at Ludwigia perennis L. as per comparative images at Ludwigia


Bhadreshwar, Hooghly, West Bengal: 18/11/2007; PLANT FOR IDENTIFICATION -34 – indiantreepix | Google Groups

Agra03 plant : 11 posts by 5 authors.

I’d requested for shrub growing near water body.

5 November 19
Agra, U.P.

Ludwigia sp. Only. Resembles L.perennis,

Thanks Sir. But in my post flowers has 5 petals. But in foi images all flowers has 4 petals in L.perennis please guide.

Also check for L.parviflora. This is only a suggestion.

You’re welcome …, You can check e flora of India key of Ludwigia, there is clearly mentioned rarely pentamerous. And you can observe the forth image that has five petals And One more thing don’t relay too much for sp. On others because we are doing here photo taxonomy, Exact identification will do only which they have material, You can check with local floras of Ludwig keys then only you finalize sp.

I hope you understand in a good way.

L.parviflora has  both 4 petalled & 5 petalled plants.

for Ludwigia, photographs are not enough.

You have to get hold of a regional flora or a key to Ludwigia species, have to sit by the plant and verify characters physically.

Thanks, for the id.
Keys and comparative images at Ludwigia also lead me to Ludwigia perennis L. (syn: Ludwigia parviflora Roxb.)


Banasura Sagar Dam  Wayanad

Date: November 15, 2019 … Altitude: about 980 m (3,200 ft) asl
Ludwigia perennis  L.

For me the ID is correct.

it just dawned on me that its used in aquariums. did you find this plant  in waterlogged soil or in the edge of the dam?

Thanks … I think there were just a couple of this bushy plants, next to a foot wide remains of annual stream, quite far from base of dam.

Mumbai, MH :: Ludwigia octovalvis for validation :: ARK2020-024 : 5 posts by 3 authors. Attachments (4)

Saw this plant in a marshy area in Charkop, Mumbai, MH in October 2019.
Is this Ludwigia octovalvis? Local name provided was Pan lavang (trans. water clove).
Requested to please validate.

No, it’s not octovalvis, because the plant has glabrous and small petals,

Could be perennis

To me also appears close to images at Ludwigia perennis L. as per comparative images at Ludwigia


BK0036 : 11 posts by 4 authors. Attachments (1)- 724 kb.
Location: Kathmandu
Elevation: 1340m asl
Date: 19 Sep 2020

The fruit looks siliqua type.

Cuphea ignea ??

Resembles Ludwigia,

Not matching. Here the fruit can help.. missed the flower this season.

Found it as a weed not ornamental.

Two plants are there within the pic, one is a vegetative branch with opposite leaves and another one is the fruiting twig with alternate leaves,

Fruiting one is Ludwigia only, its marshy or aquatic weed,

Yes I was asking for the fruiting one, weed.

You’re welcome always, …, Check locally for sp. and let us know, resembles L.perennis,


Close to Ludwigia octovalvis (Jacq.) Raven

Going by the leaves, I will go by Ludwigia perennis L. as per comparative images at Ludwigia


Need help with yellow-flowered annual : 3 posts by 2 authors. Attachments (4)- around 700 kb each.

Kerwa, Bhopal; Black soil; 22nd Nov 2020

Pl. check comparative images at Ludwigia

I think Ludwigia perennis L. as per comparative images at Ludwigia


Ludwigia Species for Id : Nasik : 04JAN21 : AK-03
3 images.
Seen yesterday (3.1.21) at Gangapur Grasslands.
Ludwigia perennis?

Hope you’re right ma’am



References: Catalogue of Life  The Plant List Ver.1.1  GRIN  Flora of Pakistan  Annotated checklist of the flowering plants of Nepal  Flora of China  Dinesh Valke’s Flickr Post  IUCN Red List (LC)  India Biodiversity Portal  Wikimedia Commons

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