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Slime flux, also known as bacterial slime or bacterial wetwood, is a bacterial disease of certain trees, primarily elm, cottonwood, poplar, boxelder, ash, aspen, fruitless mulberry and oak. A wound to the bark, caused by pruning, insects, poor branch angles or natural cracks and splits, causes sap to ooze from the wound. Bacteria may infect ...
Toxicodendron vernicifluum (formerly Rhus verniciflua [1]), also known by the common name Chinese lacquer tree, [1] [2] [3] is an Asian tree species of genus Toxicodendron native to China and the Indian subcontinent, and cultivated in regions of China, Japan and Korea. [4]
Several trees normally have marcescent leaves such as oak (Quercus), [5] beech (Fagus) and hornbeam (Carpinus), or marcescent stipules as in some but not all species of willows . [6] All oak trees may display foliage marcescence, even species that are known to fully drop leaves when the tree is mature. [7] Marcescent leaves of pin oak (Quercus ...
Quercus falcata, also called southern red oak, spanish oak, [4] bottomland red oak or three-lobed red oak is an oak (part of the genus Quercus).Native to the southeastern United States, it gets its name the "Spanish Oak" as these are the areas of early Spanish colonies, whilst "southern red oak" comes from both its range and leaf color during late summer and fall. [5]
The sap of the tree can leak out of the trunk. Beetles, stag beetles, butterflies, and Vespa mandarinia gather to reach this sap. Native to Asia, sawtooth oak has found its way into the Eastern part of the United States in states including Florida, Missouri, New York, Alabama, Pennsylvania, and many others.
Quercus palustris, also called pin oak, [4] swamp oak, or Spanish oak, [5] is a tree in the red oak section (Quercus sect. Lobatae) of the genus Quercus. Pin oak is one of the most commonly used landscaping oaks in its native range due to its ease of transplant, relatively fast growth, and pollution tolerance.
This brown papery and spiky seed pod stays on long after the leaves have fallen. In poorly drained locations, the tree can still grow but it becomes more open in shape with leaves on the end of long branches - a 'stag-headed' appearance. [5] [6] It is referred to as a blood wood tree: when it is cut, it appears to bleed because of dark red sap. [7]
They come out of the bud involute, bright red, covered with rusty down above and white tomentum below. When full grown are dark green, smooth and shining above, pale green or pale brown, downy below; midribs stout yellow, grooved above, primary veins slender. In autumn they become dark red above, pale beneath, midribs darken, then the leaf.