Piper arnottianum (Miq.) C. DC., Prodr. 16(1): 352. 1869 (Syn: Chavica arnottiana Miq.; Piper hapnium Buch.-Ham. ex Hook. f.; Piper siriboa Herb. Madr. ex Itiner.) as per Nomenclatural notes on Piper Linn. (Piperaceae) from India II PRASANTA KUMAR MUKHERJEE Phytotaxa 338 (1): 017–032 (2018);
INDIA: Tamilnadu, Kerala, Northern Division (?). BANGLADESH, THAILAND (SIAM!) as per Nomenclatural notes on Piper Linn. (Piperaceae) from India II PRASANTA KUMAR MUKHERJEE Phytotaxa 338 (1): 017–032 (2018);

Climbing shrubs; stem warty. Leaves alternate, 6 – 12 x 3 – 6 cm, ovate, cordate at base, acute or acuminate at apex, glabrous above, puberulous along the nerves beneath; basally 5 – 7 nerved; petiole to 3 cm long; leaves of flowering shoots small and oblique at base. Flowers unisexual, in erect cylindrical spikes, yellow; peduncle to 1.5 cm long. Male spikes longer than female. Stamens 2. Ovary globose; stigmas 3-5. Fruiting spikes 4 – 6 cm long.

Moist deciduous forests
Southern Western Ghats (Endemic)


Piper hapnium Buch.-Ham. ex Hook.f. : Attachments (1). 6 posts by 5 authors.
Piper hapnium an endangered and endemic Piper of the Western Ghats.

Thanks for posting this Piper.
Some general questions about this pepper: Is this used by people and if so how-medicine/food as a spice etc.
Which part of Western Ghats is this found?
Are other Pipers-for ex. Piper longum found in the same area as this Piper?
How do we identify this Piper if we come across it in the field?
Would appreciate if you could clarify these questions.

It seems my mail about Piper longum has stirred … The only thing I can say now that my photograph matches with posted earlier on Indiantreepix, but is different from link on the left (Mother Herbs). My plant and that posted earlier on Indiantreepix have broader leaves with clasping base, whereas Mother Herbs….. plant seems to have longer, narrower leaves without clasping base, and a very short petiole. I will try to collect more information when I go to the University tomorrow.

I am should I say excited by the enthusiasm of the accomplished members of the group. As everyone in the group knows that I am a novice in the field, I am thrilled like a schoolboy who is attending the first few days of college.
Your description of the breadth of the leaves and the petiole intrigues me. I have seen piper nigrum vines with broader leaves (Paniyur variety), and narrow leaves like what the local call by different names like otte thiri etc. Longer leaves of varieties like balankotta.
However they are all piper nigrum are they not? Please enlighten me.

When I wrote about P. longum, there were two things in mind:
comparison between P. longum and P. cubeba photographs and not P. nigrum, I hope you know P. nigrum is very widely grown species, and as such we expect enough of variation
Secondly the broad and narrow reference is relation between length and breadth, and not simple breadth of leaves.
I am just leaving for my office. We interaction when I back in the evening.
In the meantime enjoy other mails. I read just your mail and did not time to read others just now.

Here are the names of Piper species in Marathi…
‘Piper nigrum’  – ‘काळे मिरे’ ‘Kale Mire’
‘Piper trioicium’ – पोकळ मिरे’ ‘Pokal Mire’
‘Piper longum’ – पिंपळी’ ‘Pimpali’
‘Piper retrofractum’ – मोठी पिंपळी’ ‘Mothi Pimpali’
‘Piper betle’ – ‘पानवेल’ ‘Panvel’



Plant for ID | 27Aug11AR01 from Chimmony:
New plant growth on the forest floor. Chimmony WLS,
Date/Time- 08 Oct 2011 1:45PM
Location- Place, Altitude, GPS- Chimmony Forest, Thrissur, Kerala
Habitat- Garden/ Urban/ Wild/ Type-Forest floor
Plant Habit- Tree/ Shrub/ Climber/ Herb-No clue
Height/Length-approx – ~ 15 cms
Leaves Type/ Shape/ Size- Shape – Almost round, heart shape, 12-15cms

This could be Dioscorea or Tinospora. I imagine if any one can id from this condition. May be by digging out the roots/tuber!!

Please check Piper longum of Piperaceae as well.
You may please get a small piece of leaf and smell and taste the same to feel the Pepar.

May be either Piper longum L. or Piper betle L. as per comparative images at Piper

THIS is Piper hapnium


164 ID wild plant Piper longum:
Please ID wild plant,

Location: near Reserve Forest, Chathamattom, Ernakulam District, (Kochi) Kerala PIN:686671
Altitude: 1400fsl
Flower date: 02.10.2021, 11.25am
Habitat: wild moisture
Plant habit: climbing or creeping if no support, branches, weak stem 04 diameter, roots on stem nodes, perennial, aromatic taste and smell
Height: 04 meters
Leaves: alternate, heart shaped, apex, size:10×6cm or less, aromatic
Flower: racemose inflorescence, clustered, size:07×5cm or less, off white, non fragrant
Fruit: beans green into black size:9×1cm, edible
Seed: black,  numerous, rigid globular, diameter:2mm
Camera: mobile Samsung Galaxy A21s

Pls check Piper.

Ok, dear … It is very close to Piper arnottianum.

Thank you very much for the ID suggestion,

Yes! Looks OK !

Yes, maybe Piper arnottianum (Miq.) C. DC. as suggested by …

Yes, it is, thank you very much for ID my plant




Catalogue of life  The Plant List Ver.1.1  POWO (Piper retrofractum Vahl)  GBIF  IBIS Flora (FBI) Kerala Plants India Biodiversity Portal  Tropicos  Black pepper: piper nigrum – Google Books  Plant Genetic Resources Newsletter – Spatial analysis for Piper species distribution in India

Nomenclatural notes on Piper Linn. (Piperaceae) from India II PRASANTA KUMAR MUKHERJEE Phytotaxa 338 (1): 017–032 (2018) (Abstract- In continuation of the taxonomic study of the genus Piper from India (Mukherjee, 2017), eighty-four Piper names, reported from India, are considered here for their typification, identity, and nomenclature. The scrutiny led to the recognition of twenty-four species. Thirty-five synonyms are proposed as new ones out of sixty-one treated here. Lectotypes are designated for almost all the species recognised here together with their synonyms or basionyms. Holotypes are mentioned when applicable. Of particular mention are P. hookeri and P. sylvaticum with confused identities and lacking proper typification. Corrections are suggested to earlier lectotypifications for P. hymenophyllum and P. rhytidocarpum. Extension of distribution to India from Myanmar are recorded for three species: P. acutistigmum, P. leptostachyum and P. pothoides.)