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Cedar–apple Rust
''Gymnosporangium juniperi-virginianae'' is a plant pathogen that causes cedar-apple rust. In virtually any location where apples or crabapples (''Malus'') and eastern red cedar (''Juniperus virginiana'') coexist, cedar apple rust can be a destructive or disfiguring disease on both the apples and cedars. Apples, crabapples, and eastern red cedar are the most common hosts for this disease. Similar diseases can be found on quince and hawthorn and many species of juniper can substitute for the eastern red cedars. Symptoms On the apple tree, the infections occur on leaves, fruit and young twigs. The brightly colored spots produced on the leaves make it easy to identify. Small, yellow-orange spots appear on the upper surfaces of the leaves, anytime from April to June. These spots gradually enlarge and turn orange or red and may show concentric rings of color. Drops of orange liquid may be visible on the spots. Later in the season, black dots appear on the orange spots on the upper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Red Cedar
''Juniperus virginiana'', also known as eastern redcedar, red cedar, Virginian juniper, eastern juniper, red juniper, and other local names, is a species of juniper native to eastern North America from southeastern Canada to the Gulf of Mexico and east of the Great Plains. Farther west it is replaced by the related ''Juniperus scopulorum'' (Rocky Mountain juniper) and to the southwest by ''Juniperus ashei'' (Ashe juniper).Farjon, A. (2005). ''Monograph of Cupressaceae and Sciadopitys''. Royal Botanic Gardens, Kew. Adams, R. P. (2004). ''Junipers of the World''. Trafford. It is not to be confused with ''Thuja occidentalis'' (eastern white cedar). Description ''Juniperus virginiana'' is a dense slow-growing coniferous evergreen tree with a conical or subcylindrical shaped crown that may never become more than a bush on poor soil, but is ordinarily from tall, with a short trunk in diameter, rarely to in height and in diameter. The oldest tree reported, from West Virginia, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gall
Galls (from the Latin , 'oak-apple') or ''cecidia'' (from the Greek , anything gushing out) are a kind of swelling growth on the external tissues of plants. Plant galls are abnormal outgrowths of plant tissues, similar to benign tumors or warts in animals. They can be caused by various parasites, from viruses, fungi and bacteria, to other plants, insects and mites. Plant galls can be such highly organized structures that their cause can be determined without the actual agent being identified. This applies particularly to insect and mite plant galls. The study of plant galls is known as cecidology. Anatomy Shape and size Galls develop on various plant organs, providing nutrition and shelter to inducing insects. Galls display vast variation in morphology, size, and wall composition. The size of insect galls can range significantly, from approximately two inches in diameter to less than one-sixteenth of an inch. Some galls are so small that they are merely slightly thick ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crataegus Viridis
''Crataegus viridis'', the green hawthorn or southern thorn, is a species of hawthorn that is native to the southeastern United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 .... The tree tends to grow to be 5–15 meters tall. Forms vary considerably, and many desirable ornamental forms could be selected from the wild. The cultivar 'Winter King' is a well-known selection. File:Crataegus viridis 'Winter King', New York Botanical Garden.jpg File:Crataegus viridis Winter King 0zz.jpg File:Crataegus viridis Winter King 1zz.jpg References * External linksGreen Hawthorn (Crataegus viridis), in Georgia, Southeastern United States [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crataegus Pruinosa
''Crataegus pruinosa'' is a species of hawthorn known by the common name frosted hawthorn. It is native to a wide area of the eastern United States and southern Canada, and is sometimes considered to be several species, rather than just one. The pulp of the small fruits is edible. Varieties The following varieties are recognized in the ''Flora of North America The ''Flora of North America North of Mexico'' (usually referred to as ''FNA'') is a multivolume work describing the native plants and naturalized plants of North America, including the United States, Canada, St. Pierre and Miquelon, and Greenla ...'' (2015): * ''C. pruinosa'' var. ''pruinosa'', synonyms: **''C. bracteata'' Sarg. **''C. tumida'' Sarg. * ''C. pruinosa'' var. ''dissona'' (Sarg.) Eggl., synonyms: **''C. dissona'' Sarg. **''C. brachypoda'' Sarg. **''C. disjuncta'' Sarg. **''C. rigida'' Sarg. * ''C. pruinosa'' var. ''parvula'' (Sarg.) J.B.Phipps, synonyms: **''C. parvula'' Sarg. * ''C. pruinosa'' var. ''ru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crataegus Phaenopyrum
''Crataegus phaenopyrum'' is a species of hawthorn commonly known as Washington hawthorn or Washington thorn. It is widely grown as an ornamental plant, and can reach 10 m (about 32 feet) in height. The small red berry-like fruit grow closely together in large clusters and are food for squirrels and birds. They have a mild flavor and can be eaten raw or cooked. As with other species of hawthorn, the wood is hard and can be used to make tool A tool is an Physical object, object that can extend an individual's ability to modify features of the surrounding environment or help them accomplish a particular task. Although many Tool use by animals, animals use simple tools, only human bei ...s. The fruit is edible and can be made into jelly or crushed to make tea. The species is native to the mid-eastern United States. References External linksInformation from Plants for a Future [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autumn Glory
Autumn Glory (''Malus domestica'' 'Huaguan') is an apple cultivar developed by growers based in Washington state, US and released in 2011. The fruit is grown by Domex Superfresh Growers with a production of about 56,000 trees as of November 2014. Autumn Glory apples are described to feature a stronger and sweeter apple flavor with a hint of cinnamon. This variety is a hybrid of the Fuji (apple) and Golden Delicious apple, where the original pollination cross breed was made by Dr. Yu Lin Wang in 1976 and it is harvested in mid to late October of each year.Taylor, Susan"New Varieties Herald an Apple Comeback." ''Chicago Tribune The ''Chicago Tribune'' is an American daily newspaper based in Chicago, Illinois, United States. Founded in 1847, it was formerly self-styled as the "World's Greatest Newspaper", a slogan from which its once integrated WGN (AM), WGN radio and ...''. Chicago Tribune, 14 Sept. 2011. Retrieved on 21 July 2015. References {{Apples American apples A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crataegus Laevigata
''Crataegus laevigata'', known as the Midland hawthorn, English hawthorn, woodland hawthorn, or mayflower, is a species of hawthorn native to western and central Europe, from Great Britain (where it is typically found in ancient woodland and old hedgerows) and Spain, east to Romania and Ukraine. The species name is sometimes spelt ''C. levigata'', but the original orthography is ''C. lævigata''. Description It is a large shrub or small tree growing to or rarely to tall, with a dense crown. The leaves are long and broad, with two or three shallow, forward-pointing lobes on each side of the leaf. The hermaphrodite flowers are produced in corymbs of 6 to 12, each flower with five white or pale pink petals and two or sometimes three styles. They are pollinated by insects. The fruit is a dark red pome diameter, slightly broader than long, containing two or three nutlets. It flowers in May to June (UK) in rather lax clusters. The flowers are usually white, but can be pi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crataegus Crus-galli
''Crataegus crus-galli'' is a species of hawthorn known by the common names cockspur hawthorn and cockspur thorn. It is native to North America and is widely used in horticulture. It produces edible fruit. Description This is a small tree growing up to about 10 meters tall and 8 meters wide, rounded in form when young and spreading and flattening as it matures. The leaves are 5 to 6 centimeters long, glossy dark green in color and turning gold to red in the fall. The flowers are white and have a scent generally considered unpleasant. The fruits are small pomes that vary in colour, usually a shade of red. Most wild varieties of the tree are heavily armed in sharp thorns several centimeters long. Taxonomy It is thought to be the parent, along with '' Crataegus succulenta'', of the tetraploid species '' Crataegus persimilis''. Distribution and habitat It is native to eastern North America from Ontario to Texas to Florida. Cultivation This species is a popular ornamental tree, es ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malus Sargentii
''Malus sargentii'', the Sargent crabapple or Sargent's apple, is a species of flowering plant in the genus ''Malus ''Malus'' ( or ) is a genus of about 32–57 species of small deciduous trees or shrubs in the family Rosaceae, including the domesticated orchard apple, crab apples (sometimes known in North America as crabapples) and wild apples. The genus i ...'' of the family Rosaceae. The species was formerly considered a variety of the species '' Malus sieboldii''. It is a shrub or small tree growing to tall and broad. ''Malus sargentii'' is native to Japan but is commonly used as an attractive compact ornamental shrub elsewhere. Every other year it bears masses of pink buds opening to fragrant white blossom. In the autumn, many small red globose fruits appear, persisting on the tree until winter. Images Image:Malus_sargentii_flowers.jpg Image:Malus_sieboldii_A.jpg References sargentii Crabapples Endemic flora of Japan Garden plants of Asia {{malus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wealthy (apple)
The Wealthy is an American apple cultivar, and was the earliest to thrive in the Minnesota climate. Horticulturalist Peter Gideon Farmhouse, Peter Gideon grew it after years of trial and error with various apple varieties, and the fruit was described in 1869. History Before 1868, only crab apples grew reliably in Minnesota. Indigenous peoples in the area harvested other crops, but they did not grow apples. Early White settlers to Minnesota tried to grow apples using seeds and seedlings from their former homes to the east and the south, but their plants died, usually because of Winter in Minnesota, the region's harsh winters. In 1853, Peter Gideon moved to Minnesota for health reasons and took a homestead with his family on the shores of Lake Minnetonka, near Excelsior, Minnesota, Excelsior. He had learned fruit-growing as a child, and when he arrived on his new land, he planted a bushel of apple seeds he had brought with him from his former home in Maine, Illinois.Downing, Frui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conifer
Conifers () are a group of conifer cone, cone-bearing Spermatophyte, seed plants, a subset of gymnosperms. Scientifically, they make up the phylum, division Pinophyta (), also known as Coniferophyta () or Coniferae. The division contains a single extant class (biology), class, Pinopsida. All Neontology, extant conifers are perennial plant, perennial woody plants with secondary growth. The majority are trees, though a few are shrubs. Examples include Cedrus, cedars, Pseudotsuga, Douglas-firs, Cupressaceae, cypresses, firs, junipers, Agathis, kauri, larches, pines, Tsuga, hemlocks, Sequoioideae, redwoods, spruces, and Taxaceae, yews.Campbell, Reece, "Phylum Coniferophyta". ''Biology''. 7th ed. 2005. Print. p. 595. As of 2002, Pinophyta contained seven families, 60 to 65 genera, and more than 600 living species. Although the total number of species is relatively small, conifers are ecology, ecologically important. They are the dominant plants over large areas of land, most notably ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urediniospore
Urediniospores (or uredospores) are thin-walled spores produced by the uredium, a stage in the life-cycle of Rust (fungus), rusts. Development ''Urediniospores'' develop in the uredium, generally on a leaf's under surface. Morphology *Urediniospores usually have two Dikaryon, dikaryote nuclei within one cell. In mass they are usually pale brown in contrast to teliospores which are generally dark brown. See also *Chlamydospore *Urediniomycetes *Pycniospore *Aeciospore *Teliospore *Ustilaginomycetes *Rust_fungus#Spores, Rust fungus: Spores References *C.J. Alexopolous, Charles W. Mims, M. Blackwell, ''Introductory Mycology, 4th ed.'' (John Wiley and Sons, Hoboken NJ, 2004) Germ cells Fungal morphology and anatomy Mycology {{Basidiomycota-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
