desert rocket diplotaxis acris specimen in bloom near sde boker israel

acris akev annual arid biology blooming blooms blossoms boqer botany brassicaceae cliffs cruciferae desert diplotaxis ecosystem ein environment ephemeral flora floral flowers hatsinim highlands hiking israel jeep lavender metsukei mountain mountains nahal nature negev plant purple reserve road rocket rocky sandy science sde soil spring stream terrain touring travel violet wall wilderness zin