ADENOSCIADIUM OMANENSIS (APIACEAE), A NEW SPECIES FROM THE NORTHERN MOUNTAINS OF OMAN

Abstract

Adenosciadium omanensis, a species new to science, is described from the foothills of the northern mountains of Oman. It is closely related to Adenosciadium arabicum but differs in having a reniform leaflet with finely serrate margin, a compact inflorescence, lanceolate bracts and bracteoles with acute tip, a cylindrical fruit (schizocarp) with narrow commissure, oblong-oval terete mericarps with an exocarp covered with long forked hairs, and an emarginate endocarp on the commissural side. Adenosciadium omanensis is illustrated by photographs in its natural habitat. In addition, a comparative morphological analysis is presented that distinguishes it from Adenosciadium arabicum, the single species known in the genus, from southern Oman and Yemen. A distribution map for the two species in Oman is provided.