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.
Keywords: Adenosciadium, Apiaceae, Arabian Peninsula, Eastern Hajar Mountains, Endemic, New species, Northern Oman, Taxonomy
Adenosciadium omanensis A.Al Farsi, sp. nov.
Adenosciadium omanensis is closely related to A. arabicum in having a compound umbellate inflorescence, a fruit (schizocarp) with two adjoining mericarps, exocarp with five primary ribs, and single white hairs with forked end covering the surface of the mericarps. However, Adenosciadium omanensis is distinguished from A. arabicum by its perennial polycarpic habit (vs annual), tomentose indumentum (vs pubescent), ...
A. A. Al Farsi. 2026. Adenosciadium omanensis (APIACEAE), A New Species from the northern mountains of Oman. Edinburgh Journal of Botany. 83; 1-11
DOI: doi.org/10.24823/ejb.2026.3605 [2026-06-10]














































