Dioscorea belophylla

Dioscorea belophylla (Prain) Voigt ex Haines, Forest Fl. Chota Nagpur 530 1910. (Syn: Dioscorea nummularia var. belophylla Prain; Dioscorea sagittata Royle);
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Indian Subcontinent: Assam, Bangladesh, East Himalaya, India, Nepal, West Himalaya as per POWO;

spear-leaved dioscorea • Bengali: chupri alu • Hindi: तुरर turar • Kannada: ಕಾದು ಗೆಣಸು kaadu genasu • Marathi: जंगली मटोळ jangli matol, कडु कंद kadu kand, नंद कंद nand kand • Sanskrit: शङ्खालुका sankhaluka;
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SK 2226 16 October 2019 : 11 posts by 4 authors. Attachments (2)- around 900 kb each.

Location: Chalnakhel, kathmandu, Nepal

Altitude: 1570 m.

Date: 14 September 2019

Habit : Wild

Long leaf in Dioscorea bulbifera ?

Could be but not sure! Images not so good.

I may be an optical illusion being side views. would be nice to have some enface views

It was also on a edge of the road beyond reach !

I also more inclined towards it after going through comparative images and other closely related species. Leaf venation and aerial bulbils appear close.

Flora of China states that leaves alternate, simple; petiole 2.5–5.5 cm; leaf blade broadly cordate, 8–15(–26) × 2–14(–26) cm, glabrous, margin entire or slightly undulate, apex caudate-acuminate.

Flora of Pakistan states that leaves alternate, 4-5 cm long, 2.5-13.5 cm broad, ovate, more or less deeply cordate at the base, long acuminate, 9-nerved, petiole 2.5-12 cm long.

GBIF gives 8017 occurrences (showing how common it is).

Also check the following species as per keys in Flora of Pakistan:

2 (1)	Stem twining anticlockwise. Leaves opposite	Dioscorea belophylla
+	Stem twining clockwise. Leaves alternate	(3)

3 (2)	Leaves glabrous on both sides. Female spikes in clusters, many flowered. Capsule longer than broad. Seeds winged at the base	Dioscorea bulbifera
+	Leaves glabrous above, pubescent along the veins and the veinules beneath. Female spikes solitary few-flowered. Capsule broader than long. Seeds Winged all round	Dioscorea deltoidea