Natural Science Forum / Biology / Botany / August 2007

Plant Ed folks,
Has anyone grown Pistia stratiotes (water lettuce) for research or teaching?  If so could you share any tips?  The papers I've found in the literature mostly say they grow it in Peter's Professional Fertilizer 20:20:20 in the greenhouse in plastic tubs.  I've got ...

Plant Ed folks,
Has anyone grown Pistia stratiotes (water lettuce) for research or teaching?  If so could you share any tips?  The papers I've found in the literature mostly say they grow it in Peter's Professional Fertilizer 20:20:20 in the greenhouse in plastic tubs.  I've got ...

Looks a bit like a walnut, yet the shell seems wrong:
http://www.flickr.com/photos/demele/419268831/

Found growing the the Basque region of souther France:
http://www.trekearth.com/gallery/Europe/France/South/Midi-Pyrenees/Saint-Jean-de
-Luz/photo61390.htm
Thanks!
John Craton

Huge Herbarium: 93 Botanical Specimens-Mounted Leaves
Offered is a huge estate lot of leaf and flower specimens (there are
actually 95, but two have Scotch Tape on them and are not included in
the count). They were well done and have been well stored and

I recently visited Hawaii, and saw 2 trees and a shrub there that I
haven't identified.  There are pics at
http://www.flickr.com/photos/10239508@N07/
I'd appreciate your ideas.  I made some comments about my guesses there.

I need some information about medical uses of Arnica plant in herbal
  medicine. References from scientific journals will be highly
  appreciated.
  Kunwar Shoaib

I need some information about medical uses of Arnica plant in herbal
  medicine. References from scientific journals will be highly
  appreciated.
  Kunwar Shoaib

for a long time I was looking around for a database of character
matrices for difficult organisms/taxons. But I didn´t find someone. Is
anybody here who knows where I could find such a data collection?
Where? Or are there any projects like a "character wiki" or something

Can someone help me to ID the following plant:
http://me.metaflow-project.org/gallery2/main.php?g2_itemId=551
It's taken in west norway (center) at 1500m
Thanks

Last week I encountered a patch of stinging nettle and had my hand
irritated for some hours. For those
unaware of stinging nettle, it is a plant with needles on its stem and
tipped with acid so as the

This plant growing in coastal eastern Maine. One shot is of the same
plant's basal structure -
 http://outdoors.webshots.com/photo/2340315740101334522PsLmUQ and the
other shots are of it's fruiting end -

http://www.flickr.com/photos/10327356@N04/935336083/
What's the reason of the yellow specks?
Thank you
Fabrizio

A friend in Tokyo recently sent me a batch of seeds, and included a few bulblets
from a plant at first he called a lily, but then said he doesn't know the name
of.  The bulblets are green, about the size of a dime, and it is hard to tell
the top from the bottom.  He told me to plant ...