Hedychium venustum Wight, Icon. Pl. Ind. Orient. t. 2012 1853. (syn: Gandasulium venustum (Wight) Kuntze; Hedychium cernuum Wight);
S. India (Nilgiri Hills), Myanmar as per POWO;

Stem 60-120 cm high, oblique or suberect, densely clustered. Leaves to 40 x 12 cm, elliptic, caudate, base acute, glandular above, scarcely hairy below. Spike terminal, to 25 x 4-5 cm; bracts 2.5 x 0.5 cm, linear oblong, obtuse, glabrous, brownish, not closely placed. Flowers solitary in an axil; calyx 4.5 cm long, split on one side at apex, glabrous; corolla dull yellow, tube 4 cm long; lobes slender, 2.5 cm long; lip 2.5 cm long, acuminate, sulphur white, glabrous; anthers 1 cm long, divaricate at apex; ovary glabrous.

Flowering and fruiting: August-December
Banks of streams in evergreen forests
Western Ghats (Endemic)
(Attributions- Dr. N Sasidharan (Dr. B P Pal Fellow), Kerala Forest Research Institute, Peechi from India Biodiversity Portal)

Araceae, Arecaceae and Zingiberaceae Fortnight: Zingiberaceae: Hedychium venustum : 2 posts by 2 authors. Attachments (1).
Please find another endemic ginger of Western Ghats, Hedychium venustum

Very good photograph