Polycarpon prostratum

Polycarpon prostratum (Forssk.) Asch. & Schweinf., Oesterr. B. Zeits. 39: 128 (1889) (Syn: Alsine prostrata Forssk.; Arenaria prostrata (Forssk.) Ser.; Arversia depressa (L.) Klotzsch; Arversia memphitica (Delile) Webb; Lepigonum prostratum Kindb. (Unresolved); Loeflingia indica Retz.; Pharnaceum depressum L.; Polycarpa prostrata (Forssk.) Kuntze; Polycarpaea memphitica Delile; Polycarpaea prostrata (Forssk.) Decne.; Polycarpon depressum (L.) Rohrb. [Illegitimate]; Polycarpon glaucifolium A. Chev.; Polycarpon indicum (Retz.) Merr.; Polycarpon loeflingii Wight & Arn. ex Benth.; Polycarpon memphiticum (Delile) Fenzl ex Broun & Massey; Robbairea prostrata (Forssk.) Boiss.; Spergula prostrata (Forssk.) D.Dietr.; Spergularia prostrata (Forssk.) G.Don);

Tropical regions of Asia and Africa as per Flora of China

Prostrate annual pubescent herbs; branches to 20 cm long. Leaves subsessile, 6-15 x 2-4 mm; linear-oblong, obovate or spathulate, base attenuate, apex subacute or obtuse, puberulous; stipules 2-3 mm long, lanceolate, scarious. Flowers in terminal dichasial paniculate cymes, c. 6 mm long. Sepals 5, subequal, 3-5 mm long, linear-oblong or ovate-oblong, keeled, margins scarious. Petals c. 1 mm long, linear, notched or dentate at apex. Stamens 3-5. Ovary 1-celled; style 3-fid. Capsules 1.5-2 mm long, ovoid. Seeds many, c. 0.5 mm, subcylindrical, pale brown, reticulate.

Flowering and fruiting: January-March

Paddy fields and river banks in the plains

Paleotropics

(Attributions- Dr. N Sasidharan (Dr. B P Pal Fellow), Kerala Forest Research Institute, Peechi

from India Biodiversity Portal)

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ID of sp. from Assam KD 09 Jan 2015 : 4 posts by 3 authors. Attachments (4)

Attached images are unknown plant sp. Please ID the plant.

Date :10.01.2015

Location: Assam

Family : ??

Genus & species : ??

Habitat: Grows wild on bank of the pond
Habit : Small herb

Most probably Polycarpon prostratum (Forssk.) Asch. & Schweinf.

Request to identify this Wetland plant- Deep tap root rhizome: 1 high res. image.

This aquatic marsh plant species was found growing submerged in a mountain stream of Shyadri hills. Most of the plant seems to be covered in yellow inflorescence, this seems to be endemic to a particular valley. In addition there is an aromatic odour (like Limnophila aromatica) on pinching the flowers. The leaves resemble Limnophila, plant seems to survive summer by deep rhizome.

This was reminiscent of Pilea microphylla but very different on closer inspection.

Request for an Identification.

Google lense Identification is Polycarpon tetraphyllum, commonly known as four-leaved allseed (also fourleaf allseed or fourleaf manyseed).
Seems to be correct and plant is distributed in India.. this particular variety seems to be endemic to this valley and capable of aquatic growth, plenty of specimens were found growing under the water.

To me appears more closer to Polycarpon prostratum as per images at
https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:156228-1
http://flora-peninsula-indica.ces.iisc.ac.in/herbsheet.php?id=2497&cat=7
Pl. check.

Thanks for the information. This one is Polycarpon prostratum indeed.