Drosera
Drosera , commonly called rossolis or sundew , is a fascinating carnivorous plant and one of the most widespread in the world.
Main features:
- Sticky Leaves : The leaves are covered with glandular tentacles that secrete drops of shiny, dew-like mucilage.
- Adhesive technique : Insects, attracted by the shine and sweet smell, get trapped in the sticky mucilage.
- Slow movement : Once the prey is captured, the tentacles and sometimes the entire leaf fold to envelop it, increasing the contact surface.
- Origins : Widespread on all continents except Antarctica, they prefer humid areas, peat bogs and nutrient-poor substrates.
- Appearance : Small plants with rosette-shaped or elongated leaves, often with very decorative red highlights.
Why is it so fascinating?
- Unique Trapping Method : The glittering “dew” on the leaves looks harmless, but it is a deadly trap for insects.
- Adaptability : There are over 200 species, from tiny Drosera pygmaea to giant forms such as Drosera regia.
- Ornamental beauty : Their bright and colorful appearance makes them among the most scenic and appreciated carnivores.
Where does he live?
Drosera is cosmopolitan: it is found in Australia, South Africa, Europe, America and Asia, almost always in marshy and peaty habitats.
Why exactly there?
- Poor soil : It grows in acidic, sandy soils, poor in nitrogen and phosphorus, compensating by catching insects.
- Climate : It prefers humid, sunny environments with abundant rain or distilled water, conditions that keep the mucilage active.