----- Forwarded Message ----
From: usha Desai <ush...@rediffmail.com>
This sunday myself & Shubhada had gone to MNP &
we were rewarded well.
We saw 4 unusual flowers
I shall start with Aristlochia,
sorry Dr.Kulkarni it has no local name.
Aristolochia is the genus & there are 3
indigenous Aristolochia but all of them
are small & not significant.They are
The one we saw was almost 6 to 8 inche ...
had fawn colour speckeled with maroon.This
one is an exotic probably from S.America.
The flower has 3 parts
lower pouch or bulb which houses anthers
hidden underneath the stigma.
 middle 'C' shaped tube whose inner lining
has downwardly motile hairs.
upper portion is divided into 2parts,one
typically looks like a bird's beak & another
part like a large petal.
The flowers are dichogamousprotogynous:Which
means thestigma matures before the anthers!
[di=2,both male & female parts mature at
different time]and Protogyny[proto=first gyny=female]
So once the insect enters the flower & pollinates the
stigma,the flower will have to imprison the insect
till anthers mature.[which usually takes 24 hours!]
This is achieved by downwardly motile hairs which
allows the insect to go down but barr them from coming up.
Once the anthers mature,they spray their pollens on the insect & at the same time the motile hairs start withering and for the insect the prison gates are open..it comes out & goes to the next flower to get imprisoned!
The reward for the insect are free lodging & boarding!There are special nutritional cells for the insect to eat.
This is a marvellous example of flower adaption for its pollinating visitor..the insect.