Wadi Andur covers the central part of a vast pre-desert area located behind Jabal Samhan (eastern Dhofar). A contribution to the area's flora, of which till now scarce data was available owing to the inaccessibility, is presented. Among the species collected, Schweinfurthia latifolia is new to Oman; Zygophyllum qatarense is new to Dhofar. Other species like Cornulaca monacantha, Farsetia dhofarica, Herniaria maskatensis and Polycarpaea repens are rare in this region. The presence in the Andur area of Boswellia sacra, so far recorded only on the Hasik mountains and on the mountains behind Jibjat, is discussed.