Brassicaceae
This is an important family in Oman, with a number of distinctive species. However, a number of them are restricted to the Musandam. Several of the species shown below do not occur in Oman at all, but are found in the northern part of the Arabian Peninsula.

Diplotaxis harra, Kuwait

Diplotaxis acris, Kuwait (apparently recorded only from Jebel Ahkdar in Oman)

Farsetia aegyptia, Kuwait

Farsetia aegyptia, Kuwait

Brassica tournefortii, Kuwait (probably only found in the Musandam in Oman)

Clypeola aspera, Musandam, Oman

Cakile arabica, Kuwait (only found in the Musandam in Oman)

Cakile arabica, Kuwait (only found in the Musandam in Oman)

Mattiola longipetala, Kuwait (does not occur in Oman)

Zilla spinosa, Kuwait

Zilla spinosa, Kuwait

Horwoodia dicksoniae, Kuwait (does not occur in Oman)

Physorhynchus chamaerapistrum, Oman

Physorhynchus chamaerapistrum, Oman

Morettia parviflora, Oman

Morettia philaeana, Oman