Phyllanthus gardnerianus

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Erect herbs, glabrous, leafy branchlets scabrous. Leaves 14-18 x 6 mm, 21-30 pairs on lateral branchlets, oblong, acute at both ends, serrulate, nerves 8-10 pairs; petiole to 1 mm long; stipule ovate, cordate at base, decurrent on either sides. Female flowers sessile, solitary; sepals 5 or 6, 1 mm long, ovate, acute. Male flowers solitary, subsessile; sepals ovate. Capsule 3 x 3 mm, rugose; seeds 6, 2 x 1.5 mm, trigonous, transversally strongly ridged connected with minute parallel crossbars.  

Flowering and fruiting: July-November
Moist deciduous and semi-evergreen forests and grasslands
Paleotropics 
(Attributions- Dr. N Sasidharan (Dr. B P Pal Fellow), Kerala Forest Research Institute, Peechi

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Attachments (3).
Phyllanthus virgatus var. gardnerianus (Wight) Govaerts & Radcl.-Sm; (= P. gardnerianus)
Wild herb from Coonor area of Nilgiris 

Thanks, … P. virgatus var. gardnerianus (Wight) Govaerts & Radcl.-Sm. (& Phyllanthus gardnerianus (Wight) Baill.) is Phyllanthus simplex Retz. var. gardnerianus (Wight) Müll. Arg. as per Flora of India Vol 23 (2012) (Editors N. P. Balakrishnan, T. Chakrabarty, M. Sanjappa, P. Lakshminarsimhan & P. Singh- by Botanical Survey of India).

We have followed Webster in adopting the name P. simplex.



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ANSEPT50 Phyllanthus sp. for ID : 6 posts by 4 authors. Attachments (4).

Chikamagalur-Kemmangudi Road
13th September 2014


It seems Phyllanthus reticulatus


P. reticulatus is not matching sir. The plant I have found lacks the 5 calyx lobes and pubescent branches seen in P. reticulatus..
P. gardnerianus perhaps?

I can think of no other species than Phyllanthus reticulatus for the present.


Okay sir, thank you.


While seeing the unresolved mails, I came across this post. I think you are right in determining this as Phyllanthus gardnerianus, also treated as P. simplex var. gardnerianus. Good photography.



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Phyllanthus sp. from Chikamagalur for ID-GS06012020-2 : 5 posts by 3 authors. Attachments (2)
Please help with ID. Phyllanthus sp. from Chikamagalur Mullayaingiri Road, Bangalore. September 26, 2015.  

… has suggested Phyllanthus gardnerianus, another one not in our database


Both Catalogue of life and World Flora online consider it as  Phyllanthus virgatus var. gardnerianus (Wight) Govaerts & Radcl.-Sm.


CoL and POWO mentioned distribution in India !


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Kindly suggest name of this Phyllanthus : (Mixed thread): 7 posts by 2 authors. Attachments (1)
Is it not Phyllanthus urinaria?


the picture from Flowers of India is of Phyllanthus urinaria. I missed asserting about it in my above response.


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This shows prostrate habit. Photographed by …


to me the posted plant (3 attached pictures) do not look P. urinaria to me. The leaves of posted plant do not seem to have a clear tip that I know for P. urinaria.
P. simplex comes to my mind, but the leaves of posted plant look relatively shorter in length. I may be wrong with my observations.


The prostrate habit is unique. The subsessile flowers and fruits point to P. urinaria which is an erect herb. The problem can be solved only if … can collect specimens for further studies.


This should be Phyllanthus gardnerianus instead.


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Phyllanthus rangachariarii Murugan, Kabeer & G.V.S.Murthy submission AS27 December 22: 6 high res. images.
Here’s a new addition to eFloraofIndia website.
Phyllanthus rangachariarii Murugan, Kabeer & G.V.S.Murthy
Family – Phyllanthaceae
This rare species is narrow endemic to Agasthyamala Biosphere Reserve, Tamil Nadu
Photographed in Kanyakumari district, Tamil Nadu
In November 2022


I think this is the first field photographs of this rare endemic.


Thanks …, yes definitely these are the first and only photographic evidence of this rare endemic Phyllanthus species.


I am sorry for misguiding you!
This is not at all P. rangachariarii. Just now I noticed that the male sepals are 6. 
The characters of the plant point to very close alliance to Phyllanthus clarkei in almost all characters. But I have some doubts because P. clarkei in not known from peninsular India so far and the leaves here are stiffly coriaceous. The glands in male flowers appear to be 6 instead of 3.
So, please study your plant very carefully once again and compare with P. clarkei (now called Cathetus clarkei).

Even closer to P. gardnerianus but leaves sessile and thickly coriaceous.


Thanks for pointing the mistake in id. You are absolutely correct it can’t be Phyllanthus rangachariarii owing to the characters you mentioned i.e. 6 perianth and glands in male flowers instead of 4 in P. rangachariarii). Additionally my plant is much smaller is height not taller than 2 feets while P. rangachariarii is a much bigger shrub upto 2 metre tall.
I also checked type material images available on BSI virtual herbarium, confirming the same.
https://ivh.bsi.gov.in/phanerogams/Pyllanthus+rangachariarii

This must be Phyllanthus narayanswamii Gamble
Under shrub upto 2 metre tall. Leaves alternative,sessile, elliptic coriaceous with thickened recurved margins. Perianth lobes 6 with 6 small glands in male flowers. Fruit capsule globose with verrucose glands. All these characters are matching with Phyllanthus narayanswamii Gamble
So our plant is Phyllanthus narayanswamii Gamble, which is already reported from the Agasthyamala Biosphere Reserve where I have clicked this plant.
… I hope the identity is correct now!

Syn. of  Phyllanthus virgatus G.Forst. ? ? Looks different from images at
http://flora-peninsula-indica.ces.iisc.ac.in/herbsheet.php?id=3940&cat=7 !
Now , Cathetus virgatus (G.Forst.) R.W.Bouman ??
Please compare with Phyllanthus macraei Müll.Arg. . Now: Cathetus rheedei (Wight) R.W.Bouman
https://www.flowersofindia.MacraesLeaf-Flower.html


Someone recently united P. narayanswamii under P. virgatus but kept P. gardnerianus distinct. Bouman et al. (2022) maintained all as distinct. I am fully confused here. P. virgatus is a Pacific species while P. simplex is Asian. Someone recently informed me that P. narayanswsmii is distinct from P. gardnerianus by habit, habitat and DNA data.
My studies based on specimens and images indicate that narayanswamii and gardnerianus should be merged but considering the confusions, I will not go for any taxonomic changes. Let someone clarify these 3 species with field data combined with DNA studies.


Thanks for your valuable comments … I agree with your views and meanwhile someone clarify these 3 species based on field data combined with DNA/molecular studies, … in my opinion we should keep it as a separate species on our website under page Phyllanthus narayanswamii Gamble.
Please note than Verwijs et al. 2019 while synonymizing  P. narayanswamii  under P. virgatus have also mentioned some difference “The nervature of the leaves on the type of P. narayanswamii differs a little bit from other specimens of P. virgatus in the prominent nervature on the lower side of the leaf blade”. Also it is notable that when the publication of Verwijs et al. came in October 2019, at around same time (just two months before in August) came another publication in Phytotaxa entitled “Taxonomic and habitat update to Phyllanthus narayanswamii (Phyllanthaceae): an endemic and endangered species from southern India” which is not referred in the publication of Verwijs et al. because as I mentioned earlier they got published round same time. So before this publication only little data was available about P. narayanswamii with no any images, so who knows if the publication on P. narayanswamii taxonomic and habitat update would have came earlier, Verwijs et al. may have retained the distinct species status of P. narayanswamii as they retained the status of P. gardnerianus and P. tararae. They have also mentioned in their paper abstract that “The species complex around Phyllanthus virgatus remains taxonomically difficult” and we are suffering from the same thing here…


I feel it is different from Phyllanthus narayanswamii as per
https://efloraofindia.com/2021/03/10/phyllanthus-narayanswamii/
https://www.gbif.org/species/5382382
https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:354846-1
http://flora-peninsula-indica.ces.iisc.ac.in/herbsheet.php?id=3940&cat=7
https://www.researchgate.net/publication/282182721: Notes_on_Phyllanthus_narayanaswamii_Gamble Euphorbiaceae_and_Dimeria_lawsonii_Hookf_Fischer Poaceae_-_from_the_state_of_Tamil_Nadu
I find it closer to images of Phyllanthus macraei as per GBIF specimen and images at
https://efloraofindia.com/2011/04/09/phyllanthus-macraei/
Pl. check.


Two persons, one from Delhi University and the other from IISC Bangalore had contacted me for initial identifications of their specimens for initiating molecular studies. Unfortunately none of them have published their findings yet. One person published a new species, P. palakondensis. The other person from Delhi shared me images from three localities of TN and AP and asked me to name them. I found that the supposed morphological differences between P. gardnerianus and P. narayanswamii are not standing good due to presence of intermediate plants (images). However, P. simplex stands separate for its much narrower and thinner leaves and presence of bisexual cymules, absent in the other two.
Meanwhile Bouman et al. (2022) recognized these species as distinct under the genus Cathetus. They had not studied DNA samples of P. narayanswamii.
In conclusion, in my opinion, morphologically P. naraynswamii is same as P. gardnerianus but different from P. simplex.
I hope molecular data and field observations will eventually clarify the situation.


What about its id as Phyllanthus macraei as per GBIF specimen and images at
https://efloraofindia.com/2011/04/09/phyllanthus-macraei/ ?

This is not at all P. macraei.


The image marked as A is Phyllanthus macraei Mull.Arg., now called Cathetus rheedei (Wight) R.W. Bouman.
The image marked as B is Phyllanthus stylosus Griff. (syn. P. griffithii Mull.Arg.), now known as Cathetus stylosus (Griff.) R.W. Bouman
The image marked as C is Phyllanthus gageanus (Gamble) M.Mohanan, now known as Nymphanthus gageanus (Gamble) R.W. Bouman ex Chakrab. & N.P. Balakr.
The image marked as D is the lectotype of Phyllanthus roeperianus Wall. ex Mull.Arg., now known as Cathetus roeperianus (Wall. ex Mull.Arg.) Chakrab. & N.P. Balakr.
1 attachment


It still seems a mystery to me.


This is only Phyllanthus narayanswamii Gamble, there should not be any doubts about its identity. The only doubt we have is about its status as a species (as discussed with …) as it is close to P. gardnerianus and P. simplex but this can be only resolved after molecular studies.
There is absolutely no chances of my plant being P. macraei. I think you may be are confused because of the misidentified plant images posted on Flora of Peninsular India Website. If you will closely check with the gbif specimens its perfectly matching along with illustration showing thickened recurved leaf margins on the herbarium sheet https://www.gbif.org/occurrence/912222572


What do you say?
Why images posted by … look so thick.
Why images of Phyllanthus narayanswamii look different as per
https://efloraofindia.com/2021/03/10/phyllanthus-narayanswamii/
https://powo.science.kew.org/354846-1
http://flora-peninsula-indica.ces.iisc.ac.in/herbsheet.php?id=3940&cat=7
https://www.researchgate.net/publication/282182721: Notes_on_Phyllanthus_narayanaswamii_Gamble Euphorbiaceae_and_Dimeria_lawsonii_Hookf_Fischer Poaceae_-_from_the_state_of_Tamil_Nadu


Images from https://www.researchgate.net/publication/ looks different compared to … images !


I think … may be able to resolve this issue.


May be a new species in the making.


That would be a great news …


Any further discussions on this issue?
https://www.flowersofindia.net/catalog/slides/South-Indian%20Gooseberry.html
https://www.researchgate.net/publication/282182721_Notes_on_Phyllanthus_narayanaswamii_Gamble_Euphorbiaceae_and_Dimeria_lawsonii_Hookf_Fischer_Poaceae_-_from_the_state_of_Tamil_Nadu
https://ivh.bsi.gov.in/phanerogams-Details/en?link=MH00001114&column=szBarcode
https://ivh.bsi.gov.in/phanerogams-Details/en?link=MH00001112&column=szBarcode


I would like to see the images once again please.


I am sending the link please.

This is Phyllanthus gardnerianus only.


I think you are right, …
https://biodiversityofsrilanka.blogspot.com/2021/09/phyllanthus-gardnerianus.html
https://indiaflora-ces.iisc.ac.in/FloraPeninsular/herbsheet.php?id=3931&cat=7


 

 


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References:
POWO  Catalogue of Life  Flora of Peninsular India  
Flora of India Vol 23 (2012)  The Plant List Ver.1.1  WCSP  India Biodiversity Portal  

Updated on January 31, 2026

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