Andrographis atropurpurea

Andrographis atropurpurea (Dennst.) Alston, Taxon 26: 539 1977. (Syn: Andrographis gracilis Nees; .; Justicia atropurpurea Dennst. (Unresolved));

Images by Anurag N. Sharma, Identified by P. Santhan (Inserted by J.M.Garg)

Suberect undershrubs; stems hairy. Leaves to 10 x 4 cm, ovate, acuminate, broadest at base, glabrous; nerves 4 or 5 pairs, subprominent; petiole 0-5 mm long. Panicle with long lax racemes, scabrid; bracts and bracteoles subulate. Flowers distant; calyx lobes 5 mm long, subulate, hairy; corolla 18 mm long, glabrous, upper lip orbicular, retuse, dark brown, lower lip shallowly lobed, light pink with brown spots; lower anther bases bearded. Capsule 22 x 3 mm, oblong, glandular hairy; seeds 8, orbicular, glabrous.
Flowering and fruiting: July-September
Openings in evergreen and semi-evergreen forests
Western Ghats (Endemic)
(Attributions- Dr. N Sasidharan (Dr. B P Pal Fellow), Kerala Forest Research Institute, Peechi

ANDEC31 Andrographis sp. for identification : 5 posts by 3 authors. Attachments (7).
Chimmony Wildlife Sanctuary, Kerala
November 2014

a paniculata most likely
I have tow growing in my flower pot, volunteered plant

Andrographis atropurpurea (Dennst.) Alston
without the key... the flower's largest petal has different shape and color
i looked at my balcony flowers they are different in this detail