The document summarizes some of the unique plant life found on the island of Socotra, including the Dragon's Blood Tree which produces a valuable resin, the Desert Rose which resembles an elephant's leg in bloom, and the Dorstenia gigas which is able to sink roots directly into bare rock without soil. It also mentions the extremely rare Cucumber Tree, related to common cucumbers, and provides images of the landscape including a walled city in the mist on Socotra.

1. Strange Plants of Socotra

3. The dracaena cinnibaris or Dragon's Blood Tree , the source of valuable resin for varnishes, dyes, and "cure-all" medicine; also (predictably) used in medieval ritual magic and alchemy -

6. There is also the Desert Rose (adenium obesium) which looks like nothing so much as a blooming elephant leg

8. Dorstenia gigas - apparently does not require any soil and sinks roots straight into the bare rock:

11. Somewhat similar to the weird Dorstenia gigas , is this "bucha" vegetable, found as far north as Croatia.

12. Also found in Socotra's landscape is the ever-strange and extremely rare Cucumber Tree (dendrosicyos socotranum) - and yes, it's related to what's sitting in a pickle jar in your fridge:

14. Al Hajarah, Yemen - Walled city in the mist

16. Trinity