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 - >> > >
