Hairy Plants
I have just spent and hour or so learning about hairy plants. It has been most exciting. Here is one interesting thing I have learnt. The common old stinging nettle that stings you does so by having hollow hairs on its surface filled with formic acid under pressure (that is the same stuff ants use to deter predators). when you brush against the plant you break the hair which sticks in you and acts as a syringe, injecting you with formic acid. ow. Here is a great picture of the superb syringe hairs themselves.
Also on a sweeter note the geranium (pelargonium) plant that smells nice as you pass by is also covered with hairs which break as you touch them, these however contain a ball of perfume at the base and the the sweet fragrance is released, how nice. I am not sure what the use is of this to the plant however that is should bother to produce this stuff.
I find this so fascinating.
I have just spent and hour or so learning about hairy plants. It has been most exciting. Here is one interesting thing I have learnt. The common old stinging nettle that stings you does so by having hollow hairs on its surface filled with formic acid under pressure (that is the same stuff ants use to deter predators). when you brush against the plant you break the hair which sticks in you and acts as a syringe, injecting you with formic acid. ow. Here is a great picture of the superb syringe hairs themselves.
Also on a sweeter note the geranium (pelargonium) plant that smells nice as you pass by is also covered with hairs which break as you touch them, these however contain a ball of perfume at the base and the the sweet fragrance is released, how nice. I am not sure what the use is of this to the plant however that is should bother to produce this stuff.
I find this so fascinating.