Rotala rosea (Poiret) C. D. K. Cook ex H. Hara, Enum. Fl. Pl. Nepal. 2: 173. 1979. (Syn: Ammannia rosea Poiret, Encycl., Suppl. 1: 329. 1810; A. leptopetala Blume; A. littorea Miquel; A. pentandra Roxburgh; Rotala leptopetala (Blume) Koehne; R. littorea (Miquel) Nakai; R. pentandra (Roxburgh) Blatter & Hallberg.) as per Flora of China ;
Amphibious or marshy annuals; stem erect or creeping, simple or branched, to 20 cm tall. Leaves decussate, 8 – 20 x 3 – 6 mm, linear-lanceolate to ovate, cuneate to obtuse at the base, apex acute or obtuse. Flowers monomorphic, sessile, solitary in the axils of the bractiform leaves. Bracteoles 0.5-1 mm long, linear or filiform, not exceeding the calyx tube. Calyx tube c. 1.5 mm long, campanulate; lobes 5, minute, triangular, the alternating appendages subulate, equalling the lobes. Petals 5, pink, c. 0.5 mm long, obovate. Stamens 5, included, inserted just below the middle of calyx tube. Ovary globose; stigma capitate. Capsule c. 2 mm across, globose, 3-valved, exceeding the calyx. Seeds sub-ovoid, brownish.
Flowering and fruiting: August-February
Along streams and marshy areas in grasslands
Indo-Malesia and East Asia
Is this Rotala rosea? : Attachments (2). 4 posts by 2 authors.
This herb was seen in a very wet place at Matheran on 9th July 2013.
Is is Rotala rosea?
Rotala species with some keys
Yes it is Rotala rosea
Thank you so much …, thanks to your expert identifications I am getting a clearer idea of the Rotala species.
Rotala sp for ID-200811-PKA1: 9 posts by 5 authors. Attachments (5).
Seen this Rotala sp. at CBD Hills.
Date/Time: 20-08-2011 / 10:00AM
Location: CBD Hills, Navi Mumbai
Plant Habit: Herb
May be R. rosea. I photographed it from Kashmir rice fields a few days back.
Please check Rotala densiflora;
I always thought this one was R. densiflora. It should have 5 calyx lobes and I can’t quite see in these pics. We should wait for … to see these Rotala spp.
It is seemingly Rotala rosea. Please confirm if the flower is pentamerous, five sepal lobes, five small petals in between the sepal lobes and five stamens.
It is something related to R. rosea. Provide details for correct identification.
Rotala Sp?? : 3 posts by 2 authors. Attachments (1)
Help me in identification of this herb.
Appears more closer to images at Rotala rosea (Poiret) C. D. K. Cook ex H. Hara as per comparative images at Rotala
Plants from Assam KD Dec 2018 : 4 posts by 3 authors. Attachments (4)- 1 mb or more.
Attached images are Rotala sp. Pl. Id the sp.
Family : Lythraceae
Genus & species : Rotala sp.
Habitat: Grows wild on paddy field
Habit : Herb
To me appears close to Rotala rosea (Poiret) C. D. K. Cook ex H. Hara as per comparative images at Rotala
Looks different from images at Ammannia baccifera L.
Rotala sp.——for id : 5 posts by 5 authors. Attachments (3)
Please help in Id. of this plant in water logged area. I can relate it to R. densiflora. confirmation needed. Pics taken at Aambyvalley Rd., Off lonavala, pune in september 17.
Ammannia baccifera L. ??
No …; Rotala only.
I think close to Rotala rosea (Poiret) C. D. K. Cook ex H. Hara as per comparative images at Rotala
Yes looks like it. thanks
Devgad, Kokan, MH :: Rotala for ID :: ARK2021-066: 8 images.
Ammannia baccifera L.
I agree with … ID. It is seen on the tank bund here; rather a very common plant.
I think Rotala rosea as per images and details herein.
Seems to Ammannia
May be. It was growing flat at the lakeside !
Does not look like match with any Ammannia from Nepal !
If possible try to get closeups
These are only images ! Surprised that stems are not erect rather flat on floor but looks like Ammannia or Rotala ??
Yes, …, Check with Rotala rosea,
I checked all but not convinced with any !
Appears to be some species of Rotala only, as per comparative image sherein.
I checked all but not fully convinced. Leaves look here more linear !
The image is not that of Rotala indica (Willd.) Koehne, but presumably Rotala rosea (Poiret) C.D.K. Cook
Two sp. are listed in the book of Karnali Province (Related locality)
R. densiflora and rotundifola.
Any possibility of R. densiflora ??
Yes, Rotala rosea is more likely as per images and details herein and as per distribution in Checklist of Nepal and POWO.
Enclosing herbarium images of the sp.
Kas Week : AK19072009:
… yes to species of Rotala (family Lythraceae).
How about Rotala rotundifolia?
If this is a submerged aquatic herb then this would be Rotala ritchiei, a rare plant. It is difficult to catch this in flowers but they are small, pink and axillary. Good, a rare plant came on.
It’s not Rotala richiei or rotundifolia it must be Rotala sahyadrica
Seemingly it look like Rotala rosea but can be clarified only by getting the floral details.
Unknown herb-1 from Assam -Jan.2014 : 6 posts by 3 authors. Attachments (5).
Attached images are unknown herb from Assam. Please ID the plant.
Family : ?
Genus & species : ??
Habitat: Grows wild on bank of the river
Habit :Very small herb
Sp. of Rotala
Rotala species so far in efi
Superficially it looks like Rotala rosea. But there are much variation in R. rosea complex. there are new species like R. meenkulamensis which are allied to R. rosea. For correct identity please provide characters.
It’s Rotala rosea (Poir.) C.D.K.Cook
Hooghly : Ammannia pentandra Roxb. : 1 post by 1 author. Attachments (3).
It’s Rotala rosea (Poir.) C.D.K.Cook
A New Species of Rotala L. (Lythraceae) from Kerala by K. Subrahmanya Prasad and K. Raveendran (Keys of 25 species found in India of which 15 are endemic to Paninsular India
Flora of China Tropicos Annotated checklist of Flowering plants of Nepal India Biodiversity Portal