Gomphostemma melissifolium

Gomphostemma melissifolium Wall. ex Benth., Pl. Asiat. Rar. 2: 12 1830. (syn: Prasium melissifolium (Wall. ex Benth.) Roxb.);

Nepal to NE. Bangladesh as per WCSP;

Assam; Bangladesh; East Himalaya; Nepal as per Catalogue of Life;

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ID No.12082011_ RD 1: Help to ID this plant

Date/Time-07/08/2011- 09 AM

Location- Place, Altitude, GPS- Assam,

Habitat- Garden/ Urban/ Wild/ Type- Wild Type

Plant Habit- Tree/ Shrub/ Climber/ Herb-shrub

Leaves Type/ Shape/ Size- Velvety, serrated, about 5-8×4-6 cm

Inflorescence Type/ Size- as seen in the photos,

Flowers Size/ Colour/ Calyx/ Bracts- 2.5-3.5cm, Yellow

Fruits Type/ Shape/ Size Seeds- Not seen

This looks like Gomphostemma to me. Pl check the following link:
http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=113841

Pl. check with the following illustrations of species which may be found there as per ‎efi page on Gomphostemma:
Going through keys from Flora of Bhutan as at Gomphostemma, ‎I feel it is closer to Gomphostemma melissifolium Wall. ex Benth. as per specimens at GBIF 
I also found it matching as per description in Flora of Bhutan.