Here is just a few of the Plants from Socotra currently accessible at the Botanical Gardens Copenhagen.
/ Adenium obesum
/ Adenium socotranum (see link on synonym status)
/ Dorstenia gigas (endemic?)
/ Euphorbia abdelkuri , endemic to the island of Abd al-Kuri where only ca. 250 mature individuals are found at a single location covering less than 10 km².
Dorstenia gigas, close-ups: