One thing easy to remember to distinguish Pancratium from Crinum is the "corona" .... the cupshaped structure present just inner to petals absent in the later.
Dr. Swapna Prabhu
Systematic Botanist/ Taxonomist
Bombay Natural History Society
Hornbil House, Shahid Bhagat Singh Marg
Dr. Salim Ali Chawk
Mumbai - 400 001.