Hi, Rajesh ji, Really wonderful. I think the first post on the plant. Some extracts from Wikipedia link (for pictures & more details, click on the link): http://en.wikipedia.org/wiki/Mimosa_pudica
** *Mimosa pudica* (*Sensitive Plant*) (*pudica* = shy), is a creeping annual or perennial herb <http://en.wikipedia.org/wiki/Herb> often grown for its curiosity value: the compound leaves fold inward and droop when touched, re-opening within minutes. The species is native to South America<http://en.wikipedia.org/wiki/South_America>and Central America <http://en.wikipedia.org/wiki/Central_America>, but is now a pantropical weed. The stem is erect in young plants, but becomes creeping or trailing with age. The stem is slender, branching, and sparsely to densely prickly, growing to a length of 1.5 m (5 ft). The leaves of the mimosa pudica are compound leaves. The leaves are bipinnately<http://en.wikipedia.org/wiki/Pinnate>compound, with one or two pinnae pairs, and 10-26 leaflets per pinna. The petioles are also prickly. Pedunculate<http://en.wikipedia.org/wiki/Peduncle_(botany)>(stalked) pale pink or purple flower heads <http://en.wikipedia.org/wiki/Head_(botany)> arise from the leaf axils. The globose to ovoid heads are 8-10 mm in diameter (excluding the stamens). On close examination, it is seen that the floret petals are red in their upper part and the filaments are pink to lavender. The fruit<http://en.wikipedia.org/wiki/Fruit>consists of clusters of 2-8 pods from 1-2 cm long each, these prickly on the margins. The pods break into 2-5 segments and contain pale brown seeds some 2.5 mm long. The flowers are pollinated by the wind and insects.[2]<http://en.wikipedia.org/wiki/Mimosa_pudica#cite_note-Forest-1> *Mimosa pudica* is well known for its rapid plant movement<http://en.wikipedia.org/wiki/Rapid_plant_movement>. In the evening the leaflets will fold together and the whole leaf droops downward. It then re-opens at sunrise. This type of motion has been termed *nyctinastic movement*. The leaves also close up under various other stimuli, such as touching, warming, blowing, or shaking. The stimulus can also be transmitted to neighbouring leaves. These types of movements have been termed *seismonastic movements<http://en.wikipedia.org/w/index.php?title=Seismonastic_movements&action=edit&redlink=1> *. The movement is caused when the leafs lose turgor pressure. Turgor pressure is the force that is applied onto the cell wall by water and other cell contents. This allows the plant to stay upright, but when it is disturbed by a stimuli, chemicals in the plant force the water to leave the cell. When this pressure is lost the result is a sagging plant. This characteristic is quite common within the Mimosaceae<http://en.wikipedia.org/wiki/Mimosaceae>family. It is not known exactly why the Mimosa pudica has this feature but many scientists think that the plant uses its ability to shrink as a defense from predator. Many animals may be afraid of such a fast moving plant and would rather go and eat a less active one. 2009/4/1 Rajesh Sachdev <[email protected]> > Aha, the best flower of the season. Shot this at gandhare river, near > kalyan. Perhaps, this mimosa pudica or touch me not is the only flower > that i have seen in this season for the first time in kalyan's this > part. > > > > -- With regards, J.M.Garg "We often ignore the beauty around us" Creating Awareness about Indian Flora & Fauna: http://en.wikipedia.org/wiki/User:Jmgarg1 For learning about our trees & plants, please visit/ join Google e-group (Indiantreepix) http://groups.google.co.in/group/indiantreepix?hl=en --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "indiantreepix" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.co.in/group/indiantreepix?hl=en -~----------~----~----~----~------~----~------~--~---
