Deserta explores how plants survive where water is limited and unpredictable.
This room showcases species adapted to dry climates ranging from arid deserts to Mediterranean and seasonally dry tropical regions. Cacti, succulents, cycads, and drought‑tolerant trees—such as eucalyptus, citrus, olive, fig, and tamarind—illustrate a wide spectrum of strategies for coping with limited and unpredictable water availability.
In this warm, bright environment, plants demonstrate shared survival traits including stem and leaf succulence, thick cuticles, spines, ribbed stems, shallow and wide‑spreading root systems, and CAM photosynthesis. Together, these characteristics provide a clear lens on convergent evolution, revealing how unrelated plant lineages repeatedly arrive at similar structural and physiological solutions when faced with environmental stress.
Deserta also features long‑lived and evolutionarily distinctive species that highlight persistence in harsh environments. Notably, the collection includes Welwitschia, grown from seed through an inter‑institutional exchange, as well as mature cycads and Zamia species established early in the history of the greenhouse. Collectively, these plants illustrate the exceptional longevity of dryland lineages and the sustained care required to cultivate slow‑growing species over extended timescales.
Key Themes
- Low‑water adaptations
- CAM physiology
- Convergent evolution
- Stress tolerance
- Resource limitation
A biology student records observations while examining desert plants and succulents on a greenhouse bench.
(Photo Credits: Greenhouse Staff)