گونه جدیدی از جنس مارچوبه (Asparagus) در ایران

asparagus touranensis is described as a new species from iran. this taxon has been collected from semnan, khorasan, khuzestan and hormozgan provinces of iran. it is related to asparagus capitatus subsp. gracilis (royle) browicz in cladode shape, habit and spiny leaf on the base of stem, but differs from it in having longer pedicel, longer cladode, having articulation above the middle of pedicel and rate of pedicel to perianth. asparagus touranensis is distributed to nw, c. and south of iran. characteristics, exact localities, habitat, geographical distribution and the last state of nomenclature are explained.