Indian jalap, St. Thomas lidpod, transparent wood rose, turpeth root, white day glory • Hindi: निशोथ nisoth, पिठोरी pitohri • Kannada: ಬಿಳಿತಿಗಡೆ bilitigade, ತಿಗಡೆ ಬೇರು tigade beru • Malayalam: ത്രികോല്പക്കൊന്ന thrikoolpakkonna • Marathi: निसोत्तर or  निशोत्तर nisottar • Nepalese: निशोधि nishodhi, निशोथ nisoth • Sanskrit: निशोत्र nishotra, त्रिपुट triputa, त्रिवृथ trivrutha • Tamil: சரளம் caralam, சிவதை civatai, கும்பஞ்சான் kumpncan, பகன்றை paganrai • Telugu: తెగడ tegada, త్రివృత్ తెల్లతెగ trivrut tellatega;
Leaves variable, orbicular, ovate, linear-lanceolate, oblong or triangular, acuminate or mucronate, base broad, truncate, cordate or sagittate, margin undulate, sometimes 3-5 lobed.
The important character is the winged stem. Often 3-5 wings are observed.
Operculina turpethum has winged stem, the leaves are ovate and bigger and petioles are longer. Merremia umbellata has un-winged stem, oblong and smaller leaves and short petioles. 

Creeper for ID : 120511 : AK-1:
Taken at Maharashtra Nature Park, Mumbai, Maharashtra.
First picture taken on the 12th of Feb, 2011, the next two on 26th March,2011 and the pods on 6th of April.

This looks like Operculina turpethum.

… the Indian jalapOperculina turpethum. Sometimes, as now, the sepal cup looks less wide than normal and my mind starts thinking about the hogvine, Merremia umbellata. Some visual clue to easily separate the two species ?

.., Operculina turpethum has winged stem, the leaves are ovate and bigger and petioles are longer. Merremia umbellata has un-winged stem, oblong and smaller leaves and short petioles.

As .. says…although the flowers were similar looking, I found two type of leaves on the different creepers, one smaller is size.

the leaves of O. turphetum are very varaible even in same plant.

    Operculina turpethum (L.) Manso. Subst. Bras. 16, 1836; Cooke, Fl. Pres. Bombay 2: 309, 1958 (Repr.); Almeida, Fl. Mah. 3: 344, 2001; Singh et al, Fl. Mah. St. 2: 479, 2001; Pradhan et al, Fl. SGNP 418, 2005.
Synonyms: Convolvulus turpethum L. Sp. Pl. 155, 1753. Merremia turpethum (L.) Shah & Bhatt, Fl. Gujarat 460, 1978. C. anceps L. Mant. 1: 48, 1767. Ipomoea turpethus (L.) R. Br., Prodr. Nov. Holl. 1: 435, 1810.
    Common names: Nisothar, Dudhkalmi.
leaves variable, orbicular, ovate, linear-lanceolate, oblong or triangular, acuminate or mucronate, base broad, truncate, cordate or sagittate, margin undulate, sometimes 3-5 lobed.


identification no110311sn2:
plant habit:climber i think
height:good height of about 5 ft.

Flora of Haryana: Operculina turpethum from bank of Western Yamuna Canal Karnal:
Operculina turpethum from bank of Western Yamuna Canal Karnal


Convolvulaceae Week: Operculina turpethum From WYC Karnal:

Most of the regions in our country know it by some name; must be well-known for its medicinal value … FRLHT

I remember observing this plant In Kolkata with …

The important character is the winged stem. Often 3-5 wings are observed. I am not sure if any of the pictures posted so far do show this but I can make out some of these here in the last photograph.
I have not understood the description of the capsule as circumsessile. I am sure you will show us this feature someday.

Operculina turpethum (mixed thread):
ID this plant Date-6.1.2010
Place-Dakshin Dinajpur,West Bengal
Wild Shrub Develop on wall, floor

This should be Operculina turpethum from Convolvulaceae, this is a trailing plant..


Convolvulaceae by wing : Operculina turpethum (L.) Silva Manso:

As i told yesterday the convolvulaceae week still goes on ringing into my mind…… !
…, the Hero of the Convolvulaceae Week posted a member at – efi thread.
Keys of Convolvulaceae –
I have been watching this twiner since then. It took long time to show me its buds. Well, buds only, no flower yet!
The most interesting part of my story is that it was growing alongside Ipomoea alba L., often intertwined with the later. Who knew that it would also turn out another convolvulaceae one day!!!
Species : Operculina turpethum (L.) Silva Manso
Habit & Habitat : wild twiner, as gigantic as Ipomoea alba, winged stem, leaves size equals that of Ipomoea alba but with more prominent venation
Date : 19/10/12, 10 a.m.
Place : Kamarkundu (Hooghly)

I loved seeing the winged stem. any more pics of the stem?
and look forward to you pics of the open flowers

Attaching four pics, two recorded on the 25th August and rest yesterday.
Yes, flower is important, dekha jak…

Shots of this morning….

Found this one near my home, today.

Attaching images of seedpod of this plant, recorded on 10th, this month, in Hooghly.

Really beautiful …

Now i find this is common here, spreading in waste-places, beside rail-tracks with its white flowers and pinkish seedpods.


Climber ID request – RK51 – 27-Nov-2012:
Request id of this climber from Vasai region. The leaves have a magenta margin and the stem as seen in the last photo is twisted. I am also confused if the first photo is of fruits or flower buds?

The first picture is of flower bud. The climber is a Convolvulaceae member.

This looks like Operculina terpethum [the Indian Jalap / White Day Glory].

… had recently posted photographs of this climber. These are mine.

I received a private reply from … who also identified it as Operculina turpethum.


Wild Shrub for ID- SR 140212:
ID this plant Date-6.1.2010 Place-Dakshin Dinajpur, West Bengal
Wild Shrub Develop on wall, floor

A reply from another threadOperculina turpethum

This is Operculina turpethum (L.) Silva Manso, as have been identified by …

I too believe that it is O.turpethum



Convolvolvulaceae for identification 180213MK01: (9 pictures)
Please help me to identify this twiner. I think this is a species of Argyreia.

Habitat: roadside
Flowers: creamy white; c.10cm long
Date: 29 Jan 2013
Place: Tanjore dist., TN
Alt.: c. 35 m asl

Kindly check for Operculina turpethum.

Yes Operculina turpethum. In hindi called as निशोथ

Operculina turpethum (L.) Silva Manso. SN Mar 22 : 1 post by 1 author. Attachments (1).
Operculina turpethum (L.) Silva Manso, (= Ipomoea turpethum (L.) R. Br.), fam convolvulaceae,
climber near wet localities, roots used as a purgative commercially.
common in Chennai outskirts, southern districts of Tamilnadu and Andhrapradesh.

Climber Id from Bangladesh SM041 : 7 posts by 4 authors. Attachments (2).
Habit: Climber
Habitat: Along the canal of a village
Location: Jessore
Flowering: March

Convolvulaceae member

Is this Operculina sp ?

I would like to know the stem nature. If it is angular then it is Operculina otherwise it’s Merremia

Operculina turpethum


23062014GS1 wood climber for ID from Karnal : 14 posts by 4 authors. Attachments (2).
Kindl help in the ID of this woody climber (Liana) photographed along Roadside in Karnal in September.

Looks very similar to Operculina turpethum (L.) Silva Manso

Yes, I agree with …

Thanks a lot … And yes this should be a herbaceous climber.

‘Bengal Plants’. FBI and FI describe it as a perennial stout climber. I have pictures of dried stem. I think, if left undisturbed the base of stem can be woody. In fact a document claims it to be a ‘woody vine’.
Thank you very much. Thank you …

Lalawmkima Darlong (personal communication) has suggested Byttneria aspera Collb. (Sterculiaceae), Looks more convincing.

The docs/illustrations found in the following links do not support winged stem. Moreover, the leaves in the photographs seem to have 7 basal veins.

Thanks … for useful analysis.

I was wondering if Buettneria aspera Colebrooke in FBI or FoN is same as Byttneria grandiflora DC.! FBI informs it’s a tree! Attachments (1).

Link I have given Byttneria aspera (Chinese name: prickly fruit vine) and this HK Herbarium

Yes, Sir, I have noted that in you earlier mail. My query was why it had been entered as a tree in FBI. I have found the answer in Haines (attached here). Attachments (1)

Sir No need to have any doubt. 101% Operculina turpethum. A highly important medicinal Plant Called as “Nishoth“. This plant grow in plenty along roadside area in Panipat and Karnal Districts

Accepted … if you are so sure.

I do agre with …, must be O. turpethum only..

Wild Climbers For ID : Nasik : 070514 : AK-14 : 4 posts by 3 authors. Attachments (2).
These wild climbers were growing all over the place in a wild area.
Leaves suggest Ipomoea species.
Pictures taken on 4/5/14.

May be Ipomoea.

Please find the Plant ID for link below: efi thread
Plant is large climber, a member of Convolvulaceae and most interesting in second image stem is slightly 3-ribbed or can say 3-winged. So, this is Operculina turpethum (L.) Silva Manso

Id pls : 4 posts by 3 authors. Attachments (3)
This plant collected from mahur ghad, Nanded Dist. Maharashtra
It is convovulaceae member….

Your plant here seems to be Operculina turpethum

i cant see any features of the flower.
You must stand in such a way that your body casts a shadow on the flower you ‘ll be able to catch more details  esp in a white or any light colored flower.

Flowering: January
Habitat: Village rode side 
Habit: Climber


at BOTANICAL GARDEN, SHIBPUR, HOWRAH on 02/10/07; Sonepat, Haryana, 14th April 09; at Shahapur- Sept’09?; Pune- 20/10/09; in Aarey area – Goregaon – Mumbai, on 15-11-09; Airoli-Mulund bridge- 31Jan10; at Mumbai University, Vidyanagari, Kalina, Mumbai- 03rd January 2010; Village Sutana panipat March 2009; Panipat District- Sept’10?; near alibaug- Oct’10?; in SEEPZ- Nov.’10?; at sagargad, Alibag- 19/11/10;

Creeper to be Identified – efloraofindia | Google Groups
operculina – efloraofindia | Google Groups

Convolvulaceae member for id – efloraofindia | Google Groups
IDENTIFY THIS PLANT – indiantreepix | Google Groups
Request for Id 171109GAS2 – indiantreepix | Google Groups
Plant 151 SMP Ipomoea climber for ID – indiantreepix | Google Groups
Flora of Panipat District- Operculina turpethum – efloraofindia | Google Groups
Sagargad flora – efloraofindia | Google Groups
Please identify this climber – indiantreepix | Google Groups
(150409SCS1-3) White Day Glory (Merremia turpethum) – indiantreepix | Google Groups
wildflower of Nagla 08.03.09 – indiantreepix | Google Groups
Is it “Operculina turpanthum’ ‘????????’ – efloraofindia | Google Groups
Airoli (31Jan10) WF 3 – efloraofindia | Google Groups
Winged stem? – efloraofindia | Google Groups


For Id 010318 AB 1 : 8 posts by 1 author. Attachments (5)

Pl. check Ipomoea obscura (L.) Ker Gawl. or Operculina tansaensis Sant. & Patel.
Where & when was it clicked ?

Operculina turpethum. Winged stem can be seen.

To me it looks like Operculina turpethum.
Why there are no messages in this mail ?

O. turpethum again.

In my area it is very common, flowers whole year, except after the rains come ……… for nearly one to two months, depending on the spell of rains, it stops flowering and spends all its energy in spreading …….. vigorous growth, huge leaves, nearly round in shape with base cordate and apex obtuse …………..once rains stop and sun comes back , depending on the availability of water, new leaf shape changes abruptly to hastate and long narrow. In extreme summer , leaves become very small, linear lanceolate to somewhat trilobed. Flowers will come up now as rain is receding …… bigger flowers than those in summer months. 
There was some query and I specifically checked inflorescence and peduncle size compared to petiole ……… I found, flower can be single in leaf axil, to multiple flowered raceme …. 2 to 4 commonly …… peduncle of inflorescence may be shorter or equal or longer compared to subtending petiole.
Not only that, as winter goes away …….. in Surat after 15 January……. some vines, but not all, show pale yellow colored corolla ……. more pronounced in buds and as the day progresses color fades away. Also yellow tinged buds open up about 30 to 60 minutes later. ………….
I have read about O. tansaensis and all I could get is ……. it is a sub-shrub as against sprawling O. turpethum. I dream of one fine day going in the area of Tansa lake to
see this species. Online I could find abstract of two recent works by Botanists from Maharashtra …….. fortunately they are members of Indian Flora facebook group …….. I tagged them, messaged too, but sadly got no response . …………..
There is a report of very similar looking flower from Tripura ……. it has been identified as Merremia mammosa ……. its cordate. leaves are distinct in having dentate margin.

I guess … is correct !


need to id this creeper:
found this climber or creeper at bhopar, on 2/11/12 was spreaded over ground parallel to railway track

Check for Operculina turpethum.

efi page on Operculina turpethum with images

It is not Operculina turpethum; operculina is a stout climber; exudes a milky juice when cut. the leaves are ovate-cordate, apex obtuse; nerve impressions clear. Capsule globose, 1-1.5 cm across, enclosed in persistent calyx. hence it is not operculina

Perhaps Merremia umbellata; not confident.

There are more chance for Ipomoea alba

No question of it being I. alba at all. 
Operculina turpethum seems more likely, taking into account winged stem and fruit.
As for the leaves, in OT leaf morphology is very very variable, at times leaves become nearly linear.

Winged reddish stems; and fruit agree with Operculina turpethum but without flower it is difficult for me to confirm the identity

Operculina turpethum (L.) Silva Manso. Please see images from POWO  GBIF !


Operculina terpethum?–validation please: 3 images.
please validate. Pictures taken at Aambyvalley Rd.,Off Lonavala,Pune in April 21

Yes, it’s …


MS,June,2021/13 Climber for id: 3 images.
Location : Lengpui, Mizoram

Date : 18-03-2015
Habit : Climber
Habitat : Wild

Operculina turpethum (L.) Silva Manso ??

Yes …


Operculina turpethum (L.) Silva Manso :: Waghbil, Thane, Maharashtra :: Oct 30, 2010 · 9:58 AM IST: 2 images.
Operculina turpethum (L.) Silva Manso
Waghbil, Thane, Maharashtra :: Oct 30, 2010 · 9:58 AM IST :: about 3 m (10 ft) asl


Operculina turpethum (L.) Silva Manso :: Waghbil, Thane, Maharashtra :: Oct 30, 2010 · 9:15 AM IST: 2 images.

Operculina turpethum (L.) Silva Manso

Waghbil, Thane, Maharashtra :: Oct 30, 2010 · 9:15 AM IST :: about 3 m (10 ft) asl


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