There’s an official Guinness World Record for “World’s Most Dangerous Tree,” and it’s held by the manchineel tree from the Caribbean and Gulf of Mexico. The manchineel’s bark is covered in sap that causes skin to blister and can blind a person if it gets in their eyes. Even standing under the tree in the rain can cause blisters because the sap will drip onto skin.The tree’s fruit, known as the “beach apple” or “death apple,” is slightly sweet but very painful to eat. Ulceration of the mouth and esophagus will occur from just a small bite and consumption can be lethal. Smoke from burning manchineel wood can cause blindness, and the sap has historically been used to coat arrows for hunting. Today it’s an endangered species in Florida. (via Listverse)
mri of starfruit
Thin section of bamboo (10x) (2000 - Ron Sturm)
Avicennia marina (mangrove) leaf (40x) (2000 - Daphne Zbaeren-Colbourn)
Old Man of the Mountain (flower), I took this picture on a mountainside overlooking the Goose Lakes near Creede, Colorado.
(submission from srnwbr)
(today’s posts are thanksgiving-food-themed!)
Tree branches during Winter of 2010-2011 in Eastern Tennessee.
(Photo taken by Theresa Cox.)
(submission from beardycoxmilkshakeman)
This photo was taken by me in a parking lot near Burbank, CA
(submission from nabiok)
Acacia dealbata (Silver Wattle) pollen grains (40X) (2011 - Dr. Marta Guervos)
Passion Flower (Passiflora Incarnata) aka Maypop (by Robert D Bruce)
Venation network of young Populus tremuloides (quaking aspen) leaf (4X) (via Nikon Small World -2011 - Benjamin Blonder and David Elliott)