Lindernia pusilla

Lindernia pusilla (Willd.) Bold. (Syn: Lindernia caespitosa (Blume) Panigrahi; Lindernia hirta (Cham. & Schltdl.) Pennell; Lindernia laxa (Benth.) Mukherjee; Torenia hirta Cham. & Schltdl.; Vandellia scabra Benth.) as per IUCN Red List (LC);
 

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Small plant for identification 150113MK01: 3 correct images as above.
Please help me to identify this small herb found on the estuary region. The size of the plant was very small (1-2 inches only), and they were in full bloom on the ground. Is this any Scrophulariaceae?
Date: 27 Dec 2012
Place: Point Calimere, Nagapatinam Dist., TN
Habitat: clayey soil in coastal region
Alt.: 1 - 3 m asl
Please check against Veronica sp., perhaps V.buccabunga
But the typical exserted stamens and stigma of veronica is not seen in the picture, and I did not think this genus was found in S. India plains.
Last three photos belong to Lindernia caespitosa. First photos I don't have any idea
Looks very close from the images at:
Linderniaceae: Lindernia crustacea 
The first five pictures are of Dopatrium nudicaule.
There are 8 images- 5 of which are not Lindernia. The three images showing a flower with virtually absent posterior corolla lobes is a reasonable match for L. pusillaThis species is now more properly known as Yamazakia pusilla. There is a decent description of this species in Philcox and in Austrobaileya 9(1): 126–129 (2013).

  
  

References:

IUCN Red List (LC)  The Plant List 1 (Lindernia caespitosa (Blume) Panigrahi- Unresolved) 

The Plant List 2 (Lindernia pusilla (Willd.) Bold. with Lindernia hirta (Cham. & Schltdl.) Pennell, Lindernia stellariifolia Hayata, Torenia hirta Cham. & Schltdl. & Vandellia hirta (Cham. & Schltdl.) T. Yamaz. as synonyms)

Annonated checklist of the flowering plants of Nepal (Lindernia pusilla (Willd.) Bold. with Lindernia hirta (Cham. & Schlecht.) Pennell, Torenia hirta Cham. & Schlecht., Vandellia hirta (Cham. & Schlecht.) T. Yamaz., Vandellia pusilla (Willd.) Merr. & Vandellia scabra Benth. as synonyms)

Flora of China (Lindernia pusilla (Willdenow) Boldingh with Gratiola pusilla Willdenow, Sp. Pl. 1: 105. 1797; Lindernia hirta (Chamisso & Schlechtendal) Pennell; L. stellarifolia Hayata; Torenia hirta Chamisso & Schlechtendal; Vandellia hirta (Chamisso & Schlechtendal) T. Yamazaki as synonyms)

oswaldasia  India Biodiversity Portal  Plant Illustrations

Flickriver (images) Visoflora (images)  biodiversityofsrilanka (images) 


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