Stylidium

Stylidium, commonly known as triggerplants mainly originate with about 300 species from Australia, while even in the Philippines (and in Sulawesi) one species S. alsinoides has been described. Triggerplants have been known for some time to be murderous plants killing insects as large as ants (most sundews are not strong enough to hold an ant!), fruit flies, aphids and mosquitoes. As with other sticky plants this was assumed to be self-defense against potential pests. However recent research was able to document the existance of Protease enzymes, which means this plant is able to digest and therefore get the title of being carnivorous.

Another interesting feature is the flower that once an insect has landed, rapidly swings a pollen-laden hammer on top of the insect - thus the name "trigger-plant". Animation of S. debile courtesy of RKitko/Wikipedia shows the repositioning of the hammer after activation.

Cuphea carthagenensis

wikipedia

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We previously suspected this plant to be a Stylidium, while we noted the lack of a pollen hammer, but it turned out to be Cuphea carthagenensis the Colombian waxweed. It shares a lot of similarities to Stylidium and might be even more deadly to insects as it can easily kill Ants, due to a stronger glue (resin similar to Roridula). However, this plant might just kill for self defense and not for consumption. Plants are easy to be cultivated, normal garden soil will do - for us in fact they grow best if they are on the ground - not it a pot. Once established they might disappear during dry season and reappear in the rainy season. This plant is actually not so rare in the Philippines, so make sure to check your garden first :)

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P500

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Cuphea carthagenensis

Same species other photo :-)