Balkar ji,
This photo here
https://lh4.googleusercontent.com/AgsL-aVoniWjv3U9um_rPLFPriug5GOe8QknWhQA_ce8ewR63UWvuOeGevg8tvD2Wj3O5bQEENBqp3zZLjU43dDFd_3gXy52gXbksHOWsv9Nig_xU7U
shows how the pedicels of this species partially reflex on healthy living
tissue , but when the tissue dies completely , the pedicels can look fully
reflexed.,,and this illustrates some of the difficulty with dried herbarium
specimens because on many Ipomoea the pedicels of healthy Living tissue is
fully erect , but depending on exact conditions upon drying the pedicels
can look to be 'reflexed' and this exact situation has caused people who
will 'swear' by their favorite experts vouchered herbarium specimen can
then proceed to go into the field , look for plants that have reflexed
pedicels and post the completely wrong species on University and other 'big
name' sites...and will not even consider that their 'vouchered' specimen
could lead one to misinterpretation of what the structures on a living
plant actually look like...
The type of mistake that I have just cited above would not occur if the
field researcher was properly instructed by someone who really knew the
plants , like someone who has grown them and observed the development of
all the structures from beginning to end , including what the tissue looks
like when healthy and alive and what the structures look like if
diseased,partially decomposed and / or completely dead.
regards,
Ron
On Wednesday, March 14, 2012 11:22:12 AM UTC-4, Balkar wrote:
>
> I've shared Convolvulaceae Week : Ipomoea hederifolia from Dak Pathar
> <https://docs.google.com/document/d/1-VR4QWVHiHTCEZ0sHhbktp7iCpsaRi78N8sb9hWdQNQ/edit>
> -
> tracked<https://docs.google.com/document/d/1-VR4QWVHiHTCEZ0sHhbktp7iCpsaRi78N8sb9hWdQNQ/edit>
> Click to open:
>
> - Convolvulaceae Week : Ipomoea hederifolia from Dak Pathar
>
> <https://docs.google.com/document/d/1-VR4QWVHiHTCEZ0sHhbktp7iCpsaRi78N8sb9hWdQNQ/edit>
> -
> tracked<https://docs.google.com/document/d/1-VR4QWVHiHTCEZ0sHhbktp7iCpsaRi78N8sb9hWdQNQ/edit>
>
>
>
> Google Docs makes it easy to create, store and share online documents,
> spreadsheets and presentations.
> [image: Logo for Google Docs] <https://docs.google.com> -
> tracked<https://docs.google.com>
>
