Heliotropium zeylanicum subsp. paniculatum

Heliotropium zeylanicum subsp. paniculatum (R. Br.) Kazmi, J. Arn. Arb. 51 (2): 156. 1970 (Syn: Heliotropiumpaniculatum R. Br.);
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Boraginaceae herb for Identification MK Dec-01 : 2 posts by 2 authors. Attachments (7)
Please help me in identifying this small herb.
Habitat: fallow land and open-scrub forest floor
Plant height: 1-1.5 feet
Leaf: 5 cm long
Alt.: 300 m asl
Place: near Sathyamangalam RF, TN
Date: 10 Sep 2014

Heliotropium zeylanicum (Burm.f.) Lam.

Heliotropium zeylanicum

It looks different from Heliotropium zeylanicum as per images at
But seems to match to some extent with images at
Also see
Flora of Guntur District, Andhra Pradesh, India By T. Pullaiah (which states white flowers)
I am puzzled.
Pl. solve this mystery

The posted plant could be of  Heliotropium zeylanicum subsp. paniculatum.
The plants at FoI and Virboga could belong to the typical subspecies, H. zeylanicum subsp. zeylanicum.

Thanks, … It was a great help.

 

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References:
efi thread The Plant List Ver.1.1 Flora of Pakistan FOP illustration Tropicos Flora of Medak District, Andhra Pradesh, India By T. Pullaiah, Chintala Prabhakar, B. Ravi Prasad Rao (1998- Details)  Flora of Eastern Karnataka, Volume 2 By N. P. Singh (1988- Details)  Flora of Guntur District, Andhra Pradesh, IndiaBy T. Pullaiah (2000- details)