Acanthus species ?

Acanthus species ?;

ID No. 04022011 RD02:  Date/Time-03/03/2010- 09 AM
Location- Place, Altitude, GPS-  Kokrajhar, Assam, Alt 190m
Habitat- Garden/ Urban/ Wild/ Type- Wild Type
Plant Habit- Tree/ Shrub/ Climber/ Herb-  Herb (15-35cm)
Leaves Type/ Shape/ Size- Leaf  15-26X2-4 cm cm serrated
Inflorescence Type/ Size- as seen in the photos
Flowers Size/ Colour/ Calyx/ Bracts- Yellowish-White,
Fruits Type/ Shape/ Size Seeds- Not seen
Occurrence: Rare

Could it be any *Acanthus sp.
Wild guess...... May be *Justicia* sp

Could it be Acanthus leucostachyus