Thanks Trevor,
The Tulip from Petra is Tulipa systola which is a desert species very similar to T. agenensis, it is distributed in the deserts of Israel, Palestine, syria, Jordan and all the way to Iran.
Tulipa agenensis is very common here and as all bulbuos plants in Israel it is highly protected by low.
It is even forbiden to collect seeds without a special permition.
Saying that... ask Marcus H., i think i have sent him seeds a couple of years ago.
I know there is a book on Tulip species which is due to be published in the near future in the UK.