Zanonia indica L., Syst. Nat. ed. 10. 2: 1292 (1759);
S. India, Sri Lanka as per POWO;

Woody dioecious, perennial climbers; tendrils simple or bifid, elongate. Leaves 8-22 x 4-12 cm, ovate-oblong, base rounded, apex acute, subcoriaceous, trinerved; petiole 4-11 cm long. Flowers small, males arranged in lax pendulous panicles, females racemose. Male flowers: pedicels 4-5 mm long; sepals c. 2 mm long, ovate, acute; petals upto 3.5 x 1.5 mm, oblong, obtuse, buff-coloured. Female flowers: peduncles to 18 cm long; pedicels thick; sepals 3-4 x 3-4 mm, petals 5-7 x 3-4 mm; ovary 8-10 mm long, obconic-cylindric; ovules pendulous, 2-many in each locule; styles 3, apex bifid. Fruit 6-10 x 2.5-3 cm, elongate-cylindric, 3-valved at the truncate apex. Seeds 3-4 x 1-1.3 cm, oblong, compressed, surrounded by a large membranous wing.
Flowering and fruiting: October-November
Degraded forest areas
(Attributions: Dr. N Sasidharan (Dr. B P Pal Fellow), Kerala Forest Research Institute, Peechi as per India Biodiversity Portal)

410 ID wild climber: 20 high res. images.
Please ID wild climber,
Location: near Vannappuram, Thodupuzha, Idukki Dist., Kerala PIN:685607
Altitude: 1500fsl
Flower date: 07JAN2023, 01.10pm
Habitat: wild moisture streamside rocky hill
Plant habit: climbing, branches, semi hard flexible cylindrical stem 03cm diameter, rough brown bark, rigid young stem, tendrils, numerous nice roots, long lasting
Supporting tree: Ficus
Height: 16 meters
Leaves: alternate, heart shaped/elliptic, soft flexible, smooth glossy, acute, size upto:18×9cm
Flower: axillary spike racemose on old stem, diameter:04mm, green, non fragrant
Fruit: pendulous cylindrical fleshy lengthy gourd, semi globular apex, green into brown, size:16×4cm
Camera: CANON EOS1500D +FL10x

Zanonia indica L.

Yes it is Zanonia indica, dear …, thank you very much for ID my plant

Yes, id is correct.
Zanonia indica subsp. indica is reported from your area as per POWO.

Sharing more images. Full visitors inside the flower!!
Flower date: 15JAN2023, 12.35pm
8 high res. images.

Sharing ripened fruit and seed images.

Seed: off-white numerous ovoid compressed with oblong nice wing, size:12x2cm
2 high res. images.

Zanonia indica subsp. indica ID#410: 4 high res. images.
Image updation.

Sharing full opened flower images from the same location.
Flower date: 10SEP2023, 04.30pm 
Diameter: 18mm, non fragrant


POWO  Catalogue of Life  GBIF (High resolution specimens) Flora of peninsular India  India Biodiversity Portal  Ayurvedic Plants of Sri Lanka: Plants Details