Nice photograph Vijay ji
-- Dr. Gurcharan Singh Retired Associate Professor SGTB Khalsa College, University of Delhi, Delhi-110007 Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018. Phone: 011-25518297 Mob: 9810359089 http://people.du.ac.in/~singhg45/ On Mon, Oct 24, 2011 at 9:45 AM, Vijayasankar <[email protected]>wrote: > Dear Dr. Usha, > I didn't say the inner bark helps in ID (it may be sometimes)...but it is > helpful in describing the plant/bark...as in the case of Terminalia arjuna > (pl see the picture), the inner bark is reddish, and one can also get to > see/measure the thickness of bark when sliced. > > Thanks for the wishes, and wish you a happy Diwali, too. > Yes there is good number of Indians and we are part of the Indian > Association here :) we meet during some occasions/festivals like > Independence day, Holi, Diwali etc and celebrate together. > > Regards > > Vijayasankar Raman > National Center for Natural Products Research > University of Mississippi > > > On Sun, Oct 23, 2011 at 10:31 PM, ushadi Micromini < > [email protected]> wrote: > >> Thank you vijashakar ji... >> How does color of inner bark help in ID ... are there some species that >> only differe in the color of inner bark? >> >> happy halloween... >> today is Dhanteras.. and in a couple of days diwali... >> happy diwali... are you among a substantial indian population? >> usha di >> ===== >> >> >> >> On Mon, Oct 24, 2011 at 7:53 AM, Vijayasankar >> <[email protected]>wrote: >> >>> a SMALL portion of bark removed generally to observe if any exudate >>> present or not, if present what type and nature. >>> Some plants produce milky, white latex as in the case of Alstonia, some >>> other like Garcinia species exude yellow sap while Red Sanders produce red >>> exudate. This can help in idying the plant. Some Semecarpus produce >>> colourless watery sap which turns brown and sticky on exposure. Slicing of >>> bark also helps to know the thickness of bark and color of inner-bark. >>> >>> Regards >>> >>> Vijayasankar Raman >>> National Center for Natural Products Research >>> University of Mississippi >>> >>> >>> On Sun, Oct 23, 2011 at 9:07 PM, Ushadi micromini < >>> [email protected]> wrote: >>> >>>> Thank you Raju ji... good general explanation but >>>> it did not answer my question... >>>> >>>> Because when I look at the picture number 2 ... I can distinctly make >>>> out that someone took a machete or a sharp long heavy knife and sliced >>>> a piece of the bark off, there is beveled edge on 3 sides and the >>>> fourth is at the bottom where the knife's cutting edge stopped and >>>> took the piece of the bark off.... >>>> >>>> this is the same ...MACRO condition of course... and not >>>> sterile..compare to MICRO and STERILE procedure in plastic surgery >>>> where we slice off a section of full thickness epidermis with a little >>>> bit of fascia for grafting... same type of bevel on edges and same >>>> sharp 4th edge where the knife stopped... >>>> >>>> THIS DID NOT PEEL OFF... it was deliberately cut... why...??? .... >>>> is the question... >>>> >>>> I had white birch on my property and we used to peel off the thin bark >>>> when it started peeling by itself, we would coax it off.. >>>> delicately... bhoj patra in India... to bring to relatives ...that's >>>> peeling off in lateral strips, parallel to the ground.... >>>> where as my pine trees would flake off rectangular bark pieces in the >>>> verticals... we used them for mulch and in making growing medium for >>>> orchids.... >>>> >>>> PLEASE SOMEONE TELL ME WHAT IS THE SCIENTIFIC REASON FOR CUTTING ? >>>> SLICING A PIECE OF BARK OFF A TREE LIKE THAT SEEN IN FIGURE 2 here... >>>> >>>> IF THIS IS SCIENTIFIC PROCESS I WANT TO KNOW WHY WHAT WHEN and HOW CAN >>>> IT DAMAGE THE TRE or NOT... >>>> >>>> THANKS >>>> USHA DI >>>> >>>> =================== >>>> >>>> >>>> >>>> >>>> On Oct 24, 6:30 am, raju <[email protected]> wrote: >>>> > Dear Ushadiji, >>>> > Thank you so much, >>>> > Like other morphological characters, trees could also be identified by >>>> > their bark. If you touch the bark of the tree and try to feel the >>>> > texture of the bark, you can experience its texture. It could be >>>> > uniform, spiny, flaky, smooth or ridged. This method could be useful >>>> > in case of trees that have reached their age of maturity. The colour >>>> > of the bark can also be a parameter in identifying trees. In that >>>> > case, you need to peel off a strip of bark. For instance, if you try >>>> > to peel the bark of this sp, it breaks down into small strips in the >>>> > horizontal direction and exposes its pinkish-white layers underneath. >>>> > You will experience how different kinds of bark peel off in different >>>> > shaped strips and different colour. Some tree trunks are unique in >>>> > their appearance, thus, they can be identified easily. >>>> > >>>> > But, I hardly ever try this. In this case I was lucky to get a fallen >>>> > stem due to heavy storm in the day before my field work. >>>> > >>>> > Regards, >>>> > >>>> > Raju >>>> > >>>> > On Oct 24, 3:02 am, Ushadi micromini <[email protected]> >>>> > wrote: >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > > very nice... >>>> > > question... >>>> > > why do people scrape off/slice off bark... as in your 2nd pic above >>>> ?? >>>> > > what is scientific reason? >>>> > > usha di >>>> > > ============= >>>> > >>>> > > On Oct 23, 10:59 pm, raju das <[email protected]> wrote: >>>> > >>>> > > > Dear Friends, >>>> > >>>> > > > *Engelhardtia* *spicata* Lechen ex Blume >>>> > >>>> > > > Syn Name: *Engelhardtia* *aceriflora* (Reinw.) >>>> > > > Blume<http://www.theplantlist.org/tpl/record/kew-2789148> >>>> > >>>> > > > *Gyrocarpus* *pendulus* >>>> > > > Blanco<http://www.theplantlist.org/tpl/record/kew-2837019> >>>> > >>>> > > > Family: Juglandaceae >>>> > >>>> > > > Photographed at Assam (6 July, 2010) >>>> > > > -- >>>> > > > *Raju Das >>>> > > > Nature's Foster* >>>> > >>>> > > > Engelhardita 1.jpg >>>> > > > 120KViewDownload >>>> > >>>> > > > Engelhardita 1 (stem).jpg >>>> > > > 100KViewDownload >>>> > >>>> > > > Engelhardita 2 (leaves).jpg >>>> > > > 85KViewDownload >>>> > >>>> > > > Engelhardita 3 (flower bud).jpg >>>> > > > 166KViewDownload >>>> > >>>> > > > Englehardtia 4 (full bloom).jpg >>>> > > > 68KViewDownload >>>> > >>>> > > > Englehardtia 4 (fruit).jpg >>>> > > > 48KViewDownload- Hide quoted text - >>>> > >>>> > > - Show quoted text - >>>> >>> >>> >> >
