Knoxia sumatrensis (Retz.) DC., Prodr. 4: 569 1830. (Syn: Cuncea trifida Buch.-Ham. ex D.Don; Dentillaria corymbosa (Willd.) Kuntze; Dentillaria heyneana (DC.) Kuntze; Dentillaria mollis (R.Br. ex Wight & Arn.) Kuntze; Ernodea nepalensis Spreng.; Knoxia corymbosa Willd.; Knoxia corymbosa Thwaites [Illegitimate]; Knoxia corymbosa var. parviflora F.Muell.; Knoxia exserta DC.; Knoxia heyneana DC.; Knoxia linearis Gamble; Knoxia mollis R.Br. ex Wight & Arn.; Knoxia mollis var. subcapitata Miq.; Knoxia stricta Gaertn.; Knoxia stricta Thwaites [Illegitimate] .; Knoxia sumatrensis var. glaberrima R.Bhattacharjee & Deb; Knoxia sumatrensis var. linearis (Gamble) R.Bhattacharjee & Deb; Knoxia teres (Roxb.) DC.; Knoxia umbellata Banks ex Roxb. [Invalid]; Knoxia umbellata Banks ex Spreng.; Knoxia umbellifera Roxb. ex Wight & Arn.; Spermacoce corymbosa (Willd.) Roth [Illegitimate]; Spermacoce exserta Roxb.; Spermacoce sumatrensis Retz.; Spermacoce teres Roxb.; Timonius malaccensis King & Gamble);
Tropical & Subtropical Asia to Queensland: Assam, Bangladesh, Borneo, Cambodia, China South-Central, China Southeast, East Himalaya, Hainan, India, Jawa, Malaya, Myanmar, Nansei-shoto, Nepal, New Guinea, Nicobar Is., Philippines, Queensland, Sri Lanka, Sulawesi, Sumatera, Taiwan, Thailand, Vietnam, West Himalaya as per POWO;
Sumatra Knoxia ;

ANMAR34/54 Please identify this herb : 7 posts by 3 authors. Attachments (6)

Family: Rubiaceae
Date: November 2014
Place: Nelliyampathy, Palakkad, Kerala

Habit: Herb
Habitat: Grasslands

The stipules are pectinate. They are cut up/divided. Please see the attached photo.
Using this feature and referring the Hassan flora, I can narrow down to the genera Neanotis, Oldenlandia, Knoxia, Borreria and Mitracarpus (please see attached photo again).
I cannot go further as I do not know the nature and number of ovules and locules of the ovary in the plant I have photographed.

Neanotis sp?

Neanotis species in eFIoraofindia (with details/ keys from published papers/ regional floras/ FRLHT/ FOI/ efloras/ books etc., where ever available) 

I guess it is Knoxia mollis (synonym of K. sumatrensis).

Thanks sir. Knoxia sumatrensis.


Knoxia sumatrensis for validation, mm3 10 11 2018 : 7 posts by 4 authors. Attachments (3)
Is this plant possibly Knoxia sumatrensis.
photographed at Eravikulam WLS, Munnar, Kerala, in the Nilgiris.
First week of October 2018.
I would br grateful for any help.

Thanks, … To me also appear close as per images at

I did look at that as well as the list of flora of eravkulam

yes it is…


Herb for Id 080908JM1 : 5 posts by 2 authors. Attachments (3)
On 17/8/08 in Talakona forest, AP near Tirupati.

is it some Callicarpa sp

Does not matches with any Callicarpa species so far in efi.

Knoxia wightiana Wall. ex G.Don ??

it is Knoxia sumatrensis very common here

Thank you …! I was thinking between these two !

I too agree with ma’am, sure it’s not wightiana,


Please help me for the identification of some Hedyotis species collected recently (19.12.13) from grasslands in Kerala, above an altitude of 2100m.

This may be Hedyotis eualata (Gamble) Henry & Subram.

What is the final id ?
Hedyotis auricularis ??

No. Different.

Exallage auricularia (L.) Bremek. ??

Knoxia sumatrensis, perhaps.
See Wikimedia image


246 ID wild plant: 15 images.
Please ID wild plant,
Location: near Vannappuram Thodupuzha Idukki Dist. Kerala PIN:685607
Altitude: 1500fsl
Flower date: 25.10.2021, 02.45pm
Habitat: wild, moisture, rocky
Plant habit: small shrub, erect, branches, semi hard angular stem 04mm base diameter, hairy, annual
Height: 03 feet
Leaves: opposite, ovate, oblong, apex, hairy, size:08×4cm or less
Flower: terminal and axillary racemose, clustered, diameter:03mm, violet, lite fragrance
Fruit: conical cup green into brown, size:2.5×1.5mm
Seed: black/brown 04 nos., ovoid, size:1.5×5mm
Camera: mobile Samsung Galaxy A21s

Knoxia sumatrensis (Retz.) DC.

Yes, it is Knoxia sumatrensis dear …, thank you very much for ID my plant,

Knoxia wightiana and Knoxia hookeriana (no details) are also reported from the district as per Flora of Peninsular India, in addition to Knoxia sumatrensis.
Looks different from the GBIF specimen of Knoxia hookeriana– one and the publication at KNOXIA HOOKERI (RUBIACEAE): A NEW SPECIES FROM INDIA.
After going through the description and other details at Knoxia wightiana, I also think that it may be Knoxia sumatrensis only.

Yes, it is Knoxia sumatrensis, dear …, thank you very much for ID my plant,


for identification: 2 very high res. image.
Taken from Mainpur forest, CG. 2020

Knoxia sumatrensis (Retz.) DC.

Knoxia roxburghii (Sprengel) M. A. Rau may also be reported (POWO) from the area with keys at Flora of China.
Difficult to check with this image.
May I request you to post other images.
Otherwise we keep it as Knoxia sumatrensis (Retz.) DC. for the time being.

Looks different from Knoxia roxburghii subsp. brunonis (Wall. ex G.Don) R.Bhattacharjee & Deb and Knoxia roxburghii var. glauca (W.W.Sm.) R.Bhattacharjee & Deb, which may be reported from your area as per POWO.
It may be Knoxia sumatrensis (Retz.) DC. only as per GBIF specimens from India.

I guess inflorescence pattern is different in roxburghii !


Knoxia sumatrensis (Roxb.) Korth: 8 very high res. images.

Location: Surkhet, West Nepal
Altitude:  438m.
Date: 28 August 2021
Habit : Wild

Knoxia sumatrensis–Amboli, Maharashtra:: NS August 2022 (09): 5 images.

I hope the pics agree with the identification…
Recorded from Amboli in August 2022..
Knoxia sumatrensis



POWO  The Plant List  BSI Flora of India Checklist  Annonated checklist of Flowering plants of Nepal  Flora of China  FOC illustration  Flowers of India  FRLHT (with image)  GBIF (specimens)  Wikimedia Commons  POWO

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