Acoraceae detail - FSUS
User:Tintazul/Plantae - Wikimedia Commons
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Listă specii Acoraceae | Munte si flori
Nepenthes - Wikipedia
The trap contains a fluid of the plants own production, which may be watery or more viscous, and is used to drown the prey. This fluid contains viscoelastic biopolymers that may be crucial to the retention of insects within the traps of many species. The viscoelastic fluid in pitchers is especially effective in the retention of winged insects.[6] The trapping efficiency of this fluid remains high, even when significantly diluted by water, as inevitably happens in wet conditions.[7] The lower part of the trap contains glands which absorb nutrients from captured prey. Along the upper inside part of the trap is a slick, waxy coating which makes the escape of its prey nearly impossible. Surrounding the entrance to the trap is a structure called the peristome (the "lip"), which is slippery and often quite colorful, attracting prey, but offering an unsure footing. The prey-capture effectiveness of the peristome is further enhanced in moist environments, where condensation may cause a thin water film ...