Cornus florida, the flowering dogwood, is a species of flowering tree in the family Cornaceae native to eastern North America and northern Mexico. An endemic population once spanned from southernmost coastal Maine south to northern Florida and west to the Mississippi River. The tree is commonly planted as an ornamental in residential and public areas because of its showy bracts and interesting bark structure.
Cornus is a genus of about 30–60 species of woody plants in the family Cornaceae, commonly known as dogwoods, which can generally be distinguished by their blossoms, berries, and distinctive bark. Most are deciduous trees or shrubs, but a few species are nearly herbaceous perennial subshrubs, and some species are evergreen. Several species have small heads of inconspicuous flowers surrounded by an involucre of large, typically white petal-like bracts, while others have more open clusters of petal-bearing flowers. The various species of dogwood are native throughout much of temperate and boreal Eurasia and North America, with China, Japan, and the southeastern United States being particularly rich in native species.
A plant canker is a small area of dead tissue, which grows slowly, often over years. Some cankers are of only minor consequence, but others are ultimately lethal and therefore can have major economic implications for agriculture and horticulture. Their causes include a wide range of organisms as fungi, bacteria, mycoplasmas and viruses. The majority of canker-causing organisms are bound to a unique host species or genus, but a few will attack other plants. Weather and animal damage can also cause stress to the plant resulting in cankers. Other causes of cankers is pruning when the bark is wet or using un-sterilized tools.
Cornus kousa is a small deciduous tree 8–12 m (26–39 ft) tall, in the flowering plant family Cornaceae. Common names include kousa, kousa dogwood, Chinese dogwood, Korean dogwood, and Japanese dogwood. Synonyms are Benthamia kousa and Cynoxylon kousa. It is a plant native to East Asia including Korea, China and Japan. Widely cultivated as an ornamental, it is naturalized in New York State.
Cornus nuttallii, the Pacific dogwood,western dogwood, or mountain dogwood, is a species of dogwood tree native to western North America. The tree's name used by Hul'q'umi'num'-speaking nations is Kwi’txulhp.
Cornus racemosa, the northern swamp dogwood, gray dogwood, or panicle dogwood, is a shrubby plant native to southeastern Canada and the northeastern United States. It is a member of the dogwood genus Cornus and the family Cornaceae.
Cornus sericea, the red osier or red-osier dogwood, is a species of flowering plant in the family Cornaceae, native to much of North America. It has sometimes been considered a synonym of the Asian species Cornus alba. Other names include red brush, red willow, redstem dogwood, redtwig dogwood, red-rood, American dogwood, creek dogwood, and western dogwood.
Cornus alternifolia is a species of flowering plant in the dogwood family Cornaceae, native to eastern North America, from Newfoundland west to southern Manitoba and Minnesota, and south to northern Florida and Mississippi. It is rare in the southern United States. It is commonly known as green osier, alternate-leaved dogwood, and pagoda dogwood.
Beech bark disease is a disease that causes mortality and defects in beech trees in the eastern United States, Canada and Europe. In North America, the disease occurs after extensive bark invasion by Xylococculus betulae and the beech scale insect, Cryptococcus fagisuga. Through a presently unknown mechanism, excessive feeding by this insect causes two different fungi to produce annual cankers on the bark of the tree. The continuous formation of lesions around the tree eventually girdles it, resulting in canopy death. In Europe, N. coccinea is the primary fungus causing the infection. Infection in European trees occurs in the same manner as it does in North American trees. Though the disease still appears in Europe, it is less serious today than it once was.
Cornus amomum, the silky dogwood, is a species of dogwood native to the southern Ontario and eastern United States, from Michigan and Vermont south to Alabama and Florida. Other names include red willow, silky cornel, kinnikinnick, and squawbush.
Rhamnus cathartica, the European buckthorn, common buckthorn, purging buckthorn, or just buckthorn, is a species of small tree in the flowering plant family Rhamnaceae. It is native to Europe, northwest Africa and western Asia, from the central British Isles south to Morocco, and east to Kyrgyzstan. It was introduced to North America as an ornamental shrub in the early 19th century or perhaps before, and is now naturalized in the northern half of the continent, and is classified as an invasive plant in several US states and in Ontario, Canada.
Diaporthales is an order of sac fungi.
Cornus drummondii, commonly known as the roughleaf dogwood, is a small deciduous tree that is native primarily to the Great Plains and Midwestern regions of the United States. It is also found around the Mississippi River. It is uncommon in the wild, and is mostly found around forest borders. The roughleaf dogwood is used as a buffer strip around parking lots, in the median of highways and near the decks and patios of homes. It can grow to a height of 15 to 25 feet with a spread of 10 to 15 feet. The roughleaf dogwood flowers during the summer months. It produces near-white four-petaled flowers that are followed by small white fruits, which ripen from August to October. These dogwoods can form a dense thicket that is used as cover for wildlife. Over forty species of birds are known to feed on the fruits.
There are a number of environmental issues in Florida. A large portion of Florida is a biologically diverse ecosystem, with large wetlands in the Everglades. Management of environmental issues related to the everglades and the larger coastal waters and wetlands have been important to the history of Florida and the development of multiple parts of the economy of Florida, including the influential agricultural industry. This biodiversity leaves much of Florida's ecological ecosystem vulnerable to invasive species and human sources of industrial pollution and waste.
Laurel wilt, also called laurel wilt disease, is a vascular disease that is caused by the fungus Raffaelea lauricola, which is transmitted by the invasive redbay ambrosia beetle, Xyleborus glabratus. The disease affects and kills members of the laurel family. The avocado is perhaps the most commercially valuable plant affected by laurel wilt.
Xyleborus glabratus, the redbay ambrosia beetle, is a type of ambrosia beetle invasive in the United States. It has been documented as the primary vector of Raffaelea lauricola, the fungus that causes laurel wilt, a disease that can kill several North American tree species in the family Lauraceae, including redbay, sassafras, and avocado.
An epicormic shoot is a shoot growing from an epicormic bud, which lies underneath the bark of a trunk, stem, or branch of a plant.
Cornus foemina is a species of flowering plant in the Cornaceae known by the common names stiff dogwood and swamp dogwood. It is native to parts of the eastern and southeastern United States.
Cornus rugosa, commonly called roundleaf dogwood or round-leaved dogwood, is a deciduous tree native to northern parts of the eastern and central United States and southern parts of central and eastern Canada.
Garlic mustard was introduced to North America as a culinary herb in the 1860s and it is considered an invasive species in much of North America. As of 2020 it has been documented in most of the Eastern United States and Canada, with scattered populations in the west. It is listed as a noxious or restricted plant in the following states: Alabama, Connecticut, Massachusetts, Minnesota, New Hampshire, Oregon, Vermont, and Washington. A current map of its distribution in the United States can be found at the Early Detection and Distribution Mapping System (EDDmapS).
