Kumquats, or cumquats in Australian English, are a group of small, angiosperm, fruit-bearing trees in the family Rutaceae. Their taxonomy is disputed. They were previously classified as forming the now-historical genus Fortunella or placed within Citrus, sensu lato. Different classifications have alternatively assigned them to anywhere from a single species, Citrus japonica, to numerous species representing each cultivar. Recent genomic analysis defines three pure species, Citrus hindsii, C. margarita and C. crassifolia, with C. × japonica being a hybrid of the last two.
The American chestnut is a large, fast-growing deciduous tree of the beech family native to eastern North America. As is true of all species in the genus Castanea, the American chestnut produces burred fruit with edible nuts. The American chestnut was one of the most important forest trees throughout its range.
The pathogenic fungus Cryphonectria parasitica is a member of the Ascomycota. This necrotrophic fungus is native to East Asia and South East Asia and was introduced into Europe and North America in the early 1900s. The fungus spread rapidly and caused significant tree loss in both regions.
Citrus canker is a disease affecting Citrus species caused by the bacterium Xanthomonas. Infection causes lesions on the leaves, stems, and fruit of citrus trees, including lime, oranges, and grapefruit. While not harmful to humans, canker significantly affects the vitality of citrus trees, causing leaves and fruit to drop prematurely; a fruit infected with canker is safe to eat, but too unsightly to be sold. Citrus canker is mainly a leaf-spotting and rind-blemishing disease, but when conditions are highly favorable, it can cause defoliation, shoot dieback, and fruit drop.
Pearcea is a genus of tropical herbaceous plants in the family Gesneriaceae native to western South America. It is classified in tribe Gloxinieae and is closely related to the genus Kohleria, in which some of its species were previously included. The genus Parakohleria has recently been synonymized under Pearcea, a conclusion later supported by molecular analyses that showed that Pearcea hypocyrtiflora was nested within the former Parakohlerias.
Botryosphaeria dothidea is a plant pathogen that causes the formation of cankers on a wide variety of tree and shrub species. It has been reported on several hundred plant hosts and on all continents except Antarctica. B. dothidea was redefined in 2004, and some reports of its host range from prior to that time likely include species that have since been placed in another genus. Even so, B. dothidea has since been identified on a number of woody plants—including grape, mango, olive, eucalyptus, maple, and oak, among others—and is still expected to have a broad geographical distribution. While it is best known as a pathogen, the species has also been identified as an endophyte, existing in association with plant tissues on which disease symptoms were not observed. It can colonize some fruits, in addition to woody tissues.
Camillea tinctor is a species of fungus in the family Graphostromataceae. It is a plant pathogen and saprophyte of dying or weakened trees such as sycamore, oak, or elm. The fungus causes cankers on large branches or the tree trunk. Ascospores of this fungus are transported by wind or rain that can infect existing wounds in trees. It can be identified by orange staining that can be seen on cut wood, and it has protruding ostioles.
The fiery squirrel is a rodent in the family Sciuridae. The taxon is endemic to the area south of the Orinoco River in the state of Bolívar, Venezuela.
Hypovirus is a genus of viruses, in the family Hypoviridae. Fungi serve as natural hosts. There are four species in this genus. Infection reduces the virulence of its parasitic host, making it a hyperparasite useful for blight control.
Nomen illegitimum is a technical term used mainly in botany. It is usually abbreviated as nom. illeg. Although the International Code of Nomenclature for algae, fungi, and plants uses Latin terms as qualifiers for taxon names, the definition of each term is in English rather than Latin. The Latin abbreviations are widely used by botanists and mycologists.
Fusarium circinatum is a fungal plant pathogen that causes the serious disease pitch canker on pine trees and Douglas firs. The most common hosts of the pathogen include slash pine, loblolly pine, Monterey pine, Mexican weeping pine, and Douglas fir. Like other Fusarium species in the phylum Ascomycota, it is the asexual reproductive state of the fungus and has a teleomorph, Gibberella circinata.
Amphilogia is a genus of fungi within the family Cryphonectriaceae. It was established in 2005. The fungi cause orange cankers on tree branches.
Celoporthe is a genus of ascomycete fungi within the family Cryphonectriaceae. It was circumscribed in 2006 to contain the type species Celoporthe dispersa, which was found in South Africa growing on trees in the Myrtales. In 2011, several species were described from China and Indonesia: C. eucalypti, C. guangdongensis, C. indonesiensis, and C. syzygii. Molecular analysis of DNA sequences revealed an additional two species from South Africa in 2013, C. fontana and C. woodiana and in 2020 three more species from Hawaii were added to the genus.
Rostraureum is a genus of fungi in the family Cryphonectriaceae. The genus was erected in 2005 with a single species, namely Rostraureum tropicale.
Rostraureum tropicale is a species of fungus from genus Rostraureum that is found in Ecuador.
Teratosphaeriaceae is a family of fungi in the order Mycosphaerellales.
Mitovirus is a genus of positive-strand RNA viruses, in the family Mitoviridae. Fungi serve as natural hosts. There are five species in the genus.
Neofusicoccum arbuti is a fungus species in the genus Neofusicoccum. It was first described by D.F. Farr & M. Elliott, and given its current name by Crous, Slippers & A.J.L. Phillips in 2006. Neofusicoccum arbuti is included in the genus Neofusicoccum and the family Botryosphaeriaceae. This species is known as madrone canker. N. arbuti is a potentially lethal canker disease of Pacific madrone, Arbutus menziesii.
Pewenomyces is a genus of fungi in the family Coryneliaceae. The genus was first described in 2015 in Chile growing as canker pathogen on monkey puzzle trees and the species was named Pewenomyces kutranfy.
Coniothyriaceae is a family of ascomycetous marine based fungi within the order of Pleosporales in the subclass Pleosporomycetidae and within the class Dothideomycetes. They are pathogenic or they can be saprobic on dead branches. They are generally a anamorphic species.
