VIEWS: 5 PAGES: 6 POSTED ON: 7/22/2011
Artists fungus By :clarissa dagg Artists fungus • it’s bright white underside was used as a canvas for painters which gave it the name artists fungus • The upper portion of this fungus is either reddish brown or cocoa brown in color and may reach 45 cm (18 inches) across but most are in the 15-30 cm (6-12 inches) range. The lower surface when young and in rapid growth is a pure white which turns dark brown with age or injury. Its shape is like a fan whose handle grows from the trunk of the tree, or like a kidney. The body near the tree is the thickest and narrows down toward the outer edge, a wedge composed of layers representing each year's growth; the oldest tissue is found on the top, the youngest below. By counting the layers like the rings of a tree, the age of the fungus can be determined. The average life span is five years but some old Ganoderma may reach ten years How artists fungi is spread • Because of this massive output of spores, the species could conceivably germinate in every suitable spot in a forest. It is thus difficult to imagine that in the life of a given Ganoderma, only one of its spores will ultimately be successful in establishing a new colony. For successful colonization of a tree, the spore must fall within a large wound, such as a broken root or broken branch, and the wind- borne spores will rarely travel more than half a mile from its parent through a dense woods before depositing on some surface. • After the spore nestles into a tree wound, the fungus germinates and begins to spread into the wood. The fungus can only move through the heartwood and outward through the sapwood if the wood in these areas is already partly rotted by other species of wood-rotting fungi or bacteria. After emerging through the bark, the Ganoderma produces the broadly attached, woody fruit body in which the spore tubes form.
Pages to are hidden for
"Artists fungus"Please download to view full document