Thanks Pankaj for this wonderful information. Regards. Dinesh
On Thu, Oct 3, 2013 at 1:13 PM, Rajesh Sachdev <matherana.rajes...@gmail.com > wrote: > OMG , what a great knowledge you have Pankaj ji....no wonder your IDs are > considered full an final conclusion. Thanks for sharing it. > On Oct 3, 2013 11:00 AM, "Pankaj Kumar" <sahanipan...@gmail.com> wrote: > >> Orchids are very unique and they are found in wide range of habitats >> at diverse elevations. >> Still they are highly sensitive. They can be EPIPHYTIC (growing on >> other trees- not as parasite); TERRESTRIAL (growing on ground); >> AQUATIC (growing in water); SEMI-AQUATIC (growing near water or in >> areas which are waterlogged for significant duration of the year); >> SUB-TERRENEAN (growing completely below ground). >> >> They occupy great range of elevations depending on the region of earth >> they are found. >> People say that epiphytic orchids are not found at higher elevations. >> But this is not true. Some taxa like Dendrobium brevicaule are found >> upto 4000m elevation. Overall, terrestrial orchids reach much higher >> elevation that epiphytic ones. >> >> Orchids occupy wide range of habitats. However the diversity is lower >> in homogenous vegetation where as it is higher in heterogenous >> forests. Highest diversity is found in warm and humid areas like >> tropical rain forests. >> >> One of the main reasons for their high diversity and wide distribution >> is the absence of endosperm in the seeds. Hence they are very light >> and can be carried to greater distance by wind. When they fall in new >> area, they either adapt well or they die. In rare cases they try to >> customize themselves to the new environment giving rise to a new >> species over a long period of time. Orchids are cross pollinated and >> natural hybrids are known to occur in wild. Cross pollination helps in >> maintaining high genetic diversity within and between different >> populations. >> >> Regards >> Pankaj >> >> -- >> *********************************************************** >> Pankaj Kumar, Ph.D. >> IUCN-SSC Orchid Specialist Group Asia >> >> Office: >> Conservation Officer >> Orchid Conservation Section >> Flora Conservation Department >> Kadoorie Farm and Botanic Garden (KFBG) Corporation >> Lam Kam Road, Tai Po, New Territories, Hong Kong. >> Residence: >> 151, 1st Floor, Tai Om Tsuen >> Lam Tsuen, Tai Po, New Territories, Hong Kong. >> >> email: pku...@kfbg.org; sahanipan...@gmail.com >> Phone: +852 2483 7128 (office - 8:30am to 5:00pm); +852 9436 6251 >> (mobile). Fax: +852 2483 7194 >> >> -- >> You received this message because you are subscribed to the Google Groups >> "efloraofindia" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to indiantreepix+unsubscr...@googlegroups.com. >> To post to this group, send email to indiantreepix@googlegroups.com. >> Visit this group at http://groups.google.com/group/indiantreepix. >> For more options, visit https://groups.google.com/groups/opt_out. >> > -- > You received this message because you are subscribed to the Google Groups > "efloraofindia" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to indiantreepix+unsubscr...@googlegroups.com. > To post to this group, send email to indiantreepix@googlegroups.com. > Visit this group at http://groups.google.com/group/indiantreepix. > For more options, visit https://groups.google.com/groups/opt_out. > -- You received this message because you are subscribed to the Google Groups "efloraofindia" group. To unsubscribe from this group and stop receiving emails from it, send an email to indiantreepix+unsubscr...@googlegroups.com. To post to this group, send email to indiantreepix@googlegroups.com. Visit this group at http://groups.google.com/group/indiantreepix. For more options, visit https://groups.google.com/groups/opt_out.
