Sarracenia - Carnivorous plant

Sarracenia - Carnivorous plant


The Sarracenia

are carnivorous plants that capture their preys by means of ASCID OR SIMILAR mechanisms deriving from the modification of some leaves.

The flap of the modified leaves loses, in whole or in part, its shape to become a cup, a wineskin, a tube, etc. which take on the function of capturing small animal prey.

The preys are attracted in various ways (with colors, with nectar, etc.) and remain trapped in the ascidian. At that point, devices are activated to dissolve them and absorb the elements that derive from them.

Generally, the ascidia are filled with water and the device that determines the death and decomposition of the prey is of secondary importance (a typical example is the Sarracenia and the Darlingtonia) as very often both the death and the decomposition of the prey occurs by the bacterial microflora normally present in these structures and not thanks to enzymes secreted by the plant but due to the secretion of acids by the acid-resistent bacteria they contain.

In typical carnivorous plants there is no symbiosis with bacteria and the digestion of the prey, which is always extracellular, occurs thanks to the secretion of animal proteolytic enzymes (pepsins, trypsins) associated mostly with the secretion of acids (formic acid) .

In some carnivorous plants the secretion of acids and enzymes is continuous while in others the secretion occurs only under the stimulus of the presence of the prey.

The Sarracenia (family Sarraceniaceae) are plants native to America typical of marshy soils with temperate climates.

The genre Sarracenia includes eight species.

They are provided with ascides of a different shape than the Nephenthes and at Chefalotus. In fact, the ascis is cone-shaped with colors ranging from green to purple and remains long and straight. The cone, depending on the species, can be elongated, flattened to the ground or small. Sarracenia which can even reach a meter in length. It does not have normal leaves but only leaves modified to ascidium.

Video: Grow Carnivorous Plants! Volume 1 - Venus Flytraps, Sarracenia, and Other Cold Hardy Plants