Mandevilla species/ hybrids

Request for identification
Date/Time-Sep 2011
Location-Place, Altitude, GPS-Pune
Habitat- Garden/ Urban/ Wild/ Type-Garden
Plant Habit-Tree/ Shrub/ Climber/ Herb- Shrub/herb
Height/Length- 1foot
Leaves Type/ Shape/ Size-green
Flowers Size/ Colour/ Calyx/ Bracts-lemon yellow flower
 
 
https://08511630493324166816.googlegroups.com/attach/5052b803c264abd7/DSCN1185.JPG?part=0.1&view=1&vt=ANaJVrH_2iImL92eQxqhdsBoHMf8siKyhz2RpY5BDyyQDESkPJJbkkDShU7c1gHirZOO5w8_V3dISLZlFeL9vDDSmtdkEaOwmPSep_herk4hp6-0TOtpoEM
Request for ID : 260511 : AK-2: A creeper taken at the Flower Show, Jijamata Udyan, Mumbai.
Flower resembles Allamanda.... but never seen a white variety.
The bud resembles Plumeria.
i think this is Mandevilla sandari
It does look like Mandevilla sanderi 'Alba' when I checked on Google.
Yes, Mandevilla may be M. splendens!