Ipomoea acanthocarpa (Choisy) Asch. & Schweinf., Beitr. Fl. Aethiop. 277 1867.
Costa Rica to S. Trop. America, Cape Verde to Ethiopia as per WCSP;
India as per Notes on the occurrence of Ipomoea acanthocarpa and Ipomoea laxiflora (Convolvulaceae) in India Kattee A.V., Patil C.R., Patel S.L., Kahalkar V.I. & V.B. Shimpale- Rheedea 29(3):209-214 · September 2019;


Ipomea chinensis 2 – indiantreepix | Google Groups : 2 images.
Dr.Almeida also identified this a Ipomea chinensis.

There is no species called Ipomea chinensis. There is one Ipomea sinensis. It has small flowers with distinctly heart-shaped sepals. In your pictures I could not get a reasonable view of the sepals.

Original thread posted by me is at efi thread# with the subject line: Ipomoea 10OCT09
Ipomoea sinensis (I. calycina) has very small — ALL WHITE — flower compared to what is here.
I. sinensis is just about 1 cm; and is smaller than I. triloba which may be about 1.5 – 2 cm.

Spoke to Dr.Almeida. Ipomea sinensis is a synonym of Ipomea chinensis, but he generally refers to it as I.chinensis.

chinensis and sinensis are orthographic variants, but chinensis never seems to have been published. I. sinensis has much smaller all white flowers (published as I calycina in FBI), and doesn’t seem to be one uploaded by …

Ipomoea acanthocarpa as per discussions at Ipomoea 10OCT09 – efloraofindia | Google Groups

Thanks … Thanks for pointing to Ipomoea piurensis O’Donell as synonym of Ipomoea acanthocarpa (Choisy) Hochst. ex Schweinf. & Asch.
Will revise my notes soon.

Bhagamandala – Thalacauvery Road Karnataka
Date: 22 FEB 2017 … Altitude range: ~ 907 – 1122 m (2976 – 3683 ft) asl
Ipomoea ¿ species ?

Dear friends,
Flower, about 6 cm across. Hopefully photos show aspects to know the ID.

Thanks, …  Pl. Check comparative images in efi,  if possible.

Pl. check with images at Ipomoea staphylina

Thanks, … I am afraid it is not I. staphylina.

Thanks, … On checking comparative images at Ipomoea, another close call can be Ipomoea sagittifolia Burm. f. (where I find the leaves are quite variable). 

Thanks …, but not Ipomoea sagittifolia (popular syn. Ipomoea sepiaria) … quite familiar with, and commonly found in my vicinity.

Neither Ipomoea staphylina (inflorescence many flowered) and not Ipomoea sagittifolia (purple spotted leaf center, many flowered inflorescence on long peduncle and flower tube and throat narrow).
This again looks like Ipomoea piurensis.

Thanks very very much … for suggesting Ipomoea piurensis as the ID.
I am ready to go with … thoughts as the ID.

MNP, Aug 2014 :: Requesting ID of this climber :: ARKJAN-34/47 : 4 posts by 2 authors. Attachments (3)
Requesting to please ID this Convolvulaceae member captured in MNPark, Mumbai in August 2014.

Ipomoea obscura

Is this I. obscura. All images of I. obscura in efi are light yellow in colour. Requesting confirmation of ID.

This species I am obsessed with , till it gets its place in Convolvulaceae of India. It is not Ipomoea obscura and It is not Ipomoea marginata with which it was clubbed in EFI page. I was looking everywhere for a clue as to what it could be, and I chanced upon a paper from Brazil, and it had listed this same flower picture with name Ipomoea piurensis o’donnell. Then I tried to find out literature on-line and I found, characteristics described do match. For last four years this flower was being posted in Indian Flora and was going unidentified. Last season I uploaded pictured right from seedling to seeds stage with name Ipomoea piurensis, asking expert opinion and refute or validation. Some opinion exchange took place with … Later I happily found out this flower being given a separate entry under Ipomoea in EFI .

I too am convinced about the Ipomoea piurensis ID for the posted plant.

I have also photographed the same at the same location.


Ipomoea acanthocarpa : 7 posts by 4 authors. Attachments (12)
Finally it got its name !
Iomoea acanthocarpa , synonym Ipomoea piurensis
Collected from roadside bushes just outside Surat City, Gujarat 
on the morning of 02 10 2019, first flowers of this season.
This year it flowered late. it is an annual vine, spreads along ground, climbs nearby vegetation, fences, may be upto 4-5 meters. 
Seedlings appear after first rains, and vine dies by end of November.
It has been reported from MH and other states of South India.
Stem is red, has shallow longitudinal grooves and is Tuberculated.
Leaf is never lobed, has red veins. Calyx small, about 6mm, outer two tuberculated. Non hairy. 
Petiole longer, peduncle to inflorescence shorter, emerging from leaf axil. 
Inflorescence a short cyme of usually 3 buds, not all reach flowering stage. 
Flowers open up in morning, wither by noon. 
Capsule usually about 1 cm dia, spherical or short spindle, style persistent, spiny. 3mm, dehiscent by multiple longitudinal splits. 
Calyx persists, not appressed, 
Testa covered in long soft wavy white hairs.

More images.
Attachments (11)

Thanks very much …, I will revise labels of this plant in my collection.

For sake of completion, attaching few old images (15), recorded in Sept – Oct 2017.

Tuberculated stem, petiole
Sort peduncle, long petiole, few flowered short cyme (maximum 4 I have seen).
Limb diameter 3.5 cm, corolla length 3 cm. Note the color too.
Fruit Capsule
Seed, long wavy soft hair covered testa.
And last , the peep show …….peduncle being shorter, flowers small …… they remain hidden beneath leaves, peep ………


Ipomoea piurensis : 6 posts by 3 authors.
Please take a look on this paper.
Attachments (1)- 3 mb- New Ipomoea.pdf

Thanks … for the paper.
Do we label our pics of Ipomoea piurensis as Ipomoea acanthocarpa ?
In context of closeness of Ipomoea laxiflora to Ipomoea triloba … there is another close one – Ipomoea dichroa Choisy

Ipomoea piurensis and Ipomoea acanthocarpa are almost synonymous …… almost….  because my online search for this species came up with both names, former in Brazil, latter in Africa. I. acanthocarpa has been used as synonym to I. obscura. Unless someone revises the Genus and decides to keep one as name, other as synonym, it will be difficult to decide for me.
(Revision of Ipomoea is due now, two new species have been reported from South India, TN I think …..in Indian Flora).
I have difficulty accepting Ipomoea laxiflora……. it is Ipomoea triloba. I do not find much reference for Ipomoea laxiflora, only a single paper from Uttarakhand. 

Ipomoea dichroa, previously Ipomoea arachnosperma has slightly bigger mauve flower, leaf is always cordate, unlobed …..and very hairy ….long stiff hairs all over the vine ……umcommon in Surat.

Both of you are exactly on target.
WCSP, which is generally correct, mentions this as
Ipomoea acanthocarpa (Choisy) Hochst. ex Schweinf. & Asch., Beitr. Fl. Aethiop.: 277 (1867).
I also got hold of the publication, where it is mentioned (Ipomoea (Convolvulaceae) in Bolivia (Abstract- An account of the genus Ipomoea L. in Bolivia is presented. 102 species are recognised in the country and each of these is described. Notes are provided on diagnostic features, distribution, habitat, phenology and conservation status. A dichotomous key to all species is provided together with additional informal keys focussing on outstanding features of morphology and ecology. Line drawings illustrate the new species described and photographs are provided to facilitate identification and draw attention to key diagnostic features. Maps of the distribution in Bolivia of selected species are also provided. ….)) as below:
26. Ipomoea acanthocarpa (Choisy) Aschers. & Schweinf. (Ascherson & Schweinfurth 1867: 277).
Calonyction acanthocarpum Choisy (1845: 346). Type: Sudan, Kordofan, T. Kotschy 269 (isotype K!).
Ipomoea piurensis O’Donell (1953: 382), synon. nov. Type: Peru, O. Haught 142 (holotype US!).

Great news…..happy ending finally !!
I got first clue from here  ….. it is flower no. 25 on page 2 of this pdf named Ipomoea piurensis …..search began and I found not many online references, but I did found the name Ipomoea acanthocarpa.
Earlier I had accessed ‘Ipomoea in Bolivia’ while looking for Ipomoea rubriflora, but at that time I didn’t know either of the names and, this document doesn’t have a color photo of the species, that way, being in possession of reference, I missed it entirely !
Any way , the mystery is solved now !
(Though … is not convinced ……. he still thinks it is a variation of Ipomoea sagittifolia, and he suggests cross pollination between two …… now that is not my cup of tea.)
Thanks … for bringing Bolivian document in support !!!


It was Dr. Rakesh Singh, who first reported Ipomoea acanthocarpa syn. Ipomoea piurensis O’Donell in India in efloraofindia in Oct.’18. as per details at Ipomoea acanthocarpa as below:
However, it was published only as per Notes on the occurrence of Ipomoea acanthocarpa and Ipomoea laxiflora (Convolvulaceae) in India Rheedea 29(3):209-214 · September 2019 by Kattee A.V., Patil C.R., Patel S.L., Kahalkar V.I. & V.B. Shimpale
It is also a great surprise that it was published after being posted by Dinesh ji in Oct.’2009.
Kudos to Rakesh ji and Dinesh ji, for all this.
Great work, …!!!

I feel may be only after identification by Rakesh ji, attention of botanical fraternity has been drawn for this new record for publication.

Also see Rakesh ji’s detailed posting at Ipomoea acanthocarpa

I’m only the proverbial squirrel helping out Shreeram constructing the bridge to Lanka. Accomplishing not really much but keep doing my bit!

In ’14 I recorded it first in Surat, reported in Indian Flora, and since then saw it being reported from elsewhere too!
Much later saw it being labeled as Ipomoe marginata (now Ipomoea sagittifolia) which I thought as grave injustice to a beautiful species .
Every year I kept repeating it in IndianFlora. In ’18 I had got hold of ID, was not sure of it and posted it again in Indian Flora with comparison photos of Ipomoea marginata. Differences are very clear cut. It is at that point I pulled Dinesh sir in the discussions.
I am happy, mystery is over finally. Ron Kushner was sceptical of this species and ID, ……..I pointed out its inclusion in the document Ipomoea in Bolivia after Garg sir pointed out this great piece of evidence  to us ………now he has relented and accepted.
All well that ends well !!!

Thanks, Rakesh ji, for your persistence, which may have finally lead to its publication.

I too think so, but it doesn’t matter …….. what matters is its place in Ipomoea in India.

Interestingly for many years Ipomoea acanthocarpa (Choisy) Asch. & Schweinf. has been recorded as synonym of I. obscura (L.) Ker.-Gawl. which has been well reported from India, but now all major databases treat them distinct. It would be interesting to know differences between them.


Ipomoea acanthocarpa : For Validation : Maharashtra Nature Park, Mumbai : 10OCT19 : AK-11 : 10 posts by 3 authors. Attachments (3)
With the current discussion going on about this Species, I am posting my pictures.
Taken in the first week of November in 2014, at MNP.
These were identified earlier by … as Ipomoea obscura.
For validation please.

Same. 100 %.

Leaves are cordate, acute tipped.
It has been treated as Ipomoea obscura mistakenly, you can find online. But it is different from I .obscura in leaf….. red veins, basal notch very wide, corolla entirely different in limb, tube, midpetaline bands, calyx larger and outers reticulated, stem tuberculated, capsule bigger, seeds hairy, lifespan short annual.
Interesting part is, there is an African species similar to and treated as I .obscura with longer elongated linear hairy calyx lobes, very very dissimilar to Asian species. Ron himself advocates in putting lot of emphasis in calyx and I follow it too ……in this case he chose to abide by some 50+ years old flora.
Any way, in a reply to a facebook post he has accepted Ipomoea acanthocarpa as ID to the flower in posts your and mine.

what is MNP. … who is Ron. you are talking shorthand. some of us are not on the fb

MNP =Maharastra Nature Park
Ron (Kushner) = Ron Convolvulaceae, international convolvulaceae expert. Expert and member in our group.

MNP is Maharashtra Nature Park in Mumbai, which is already mentioned in the subject line. You probably missed it.

Thanks … yes I recall him now.
… yes…. gift of cataract surgery. I wear these skinny reading glasses now and
on bing the screen flickers (google had those red boxes). hurts eyes. so I get to the meat of the thread in so doing missed the top. what to do

Not a problem. Get well soon.


Ghodbunder Road near Versova– 10 OCT 09;  Ipomoea 10OCT09 – efloraofindia | Google Groups

Mumbai, February 2022 :: Ipomoea for ID :: ARK2022-062:
This was clicked at Bhandup Pumping Station, Mumbai in February 2022
I thought this to be Ipomoea acanthocarpa.
Requested to please validate.

Convolvulaceae ???

I think it is difficult to say with these images.

Ipomoea acanthocarpa for me


Ipomoea acanthocarpa (Choisy) Hochst. ex Schweinf. & Asch. :: Waghbil, Thane, Maharashtra :: Oct 30, 2010 · 7:34 AM IST: 10 images.
Ipomoea acanthocarpa (Choisy) Hochst. ex Schweinf. & Asch.
Waghbil, Thane, Maharashtra :: Oct 30, 2010 · 7:34 AM IST :: about 3 m (10 ft) asl



WCSP  Catalogue of Life  The Plant List Ver.1.1  Tropicos  World Flora Online  POWO  GBIF (high resolution specimens) herbariovaa (specimen)  JSTOR  west african plants
Notes on the occurrence of Ipomoea acanthocarpa and Ipomoea laxiflora (Convolvulaceae) in India Kattee A.V., Patil C.R., Patel S.L., Kahalkar V.I. & V.B. Shimpale- Rheedea 29(3):209-214 · September 2019 (Abstract- Ipomoea acanthocarpa (Choisy) Hochst. ex Schweinf. & Asch. an African species is reported for the first time from India. Ipomoea laxiflora H.J.Chowdhery & Debta hitherto recorded from North India, is reported for the first time from Peninsular India. Detailed description, illustrations, photographs and taxonomic notes for both the species are provided.)