Senna bicapsularis ?

India (I) ; Assam ; Maharashtra ; Manipur ; Meghalaya ; Mizoram; Nagaland ; Tripura ; West Bengal & other countries as per ILDIS;
Senna for ID : Nairobi : 110712 : AK-2: Picture taken on 30/01/2009 in Nairobi, Kenya.
It was in a Botanical Garden and name given was Senna bicapsularis.
Kindly confirm id.
May be Senna bicapsularis. to me it appears close with images of this species:

A cultivated plant seen on 15/3/14 with yellow flowers.
Kindly confirm id.
sir, this is correct name.