The purpose of this publication is to clarify further the tree decay concept that expands the classical concept to include the orderly response of the tree to wounding and infection-compartmentalization-and the orderly infection of wounds by many microorganisms-successions. The heartrot concept must be abandoned because it deals only with decay-causing fungi and it states that these fungi grow unrestricted through heartwood after infection of fresh wounds. The heartrot concept emphasizes descriptions of decay-causing fungi and types of decayed wood. It describes disordered wood and events that occurred in the past. The expanded decay concept emphasizes the order of a compartmented tree, the order of comparimentalization, and the order of successions. Regulation of discoloration and decay depends on understanding compartmentalization and successions. ... [Information of the supplier]
Virginia Tech's Tree Fact Sheets provide concise information on approximately 800 tree species of North America. Fact sheets (with morphological descriptions and photographs) are printable on one sheet of paper. [Editorial staff vifabio]
The University of Connecticut has developed this site dedicated to the ornamental attributes, appropriate use and identification of landscape plants. This site is geared toward the teaching of landscape plants and contains valuable information for students, homeowners and plant professionals. At the core of this site are plant information pages that contain text, photographs, illustrations and latin name pronounciations. The plants listed in this resource are meant to create an awareness of the great variety of ornamental plants that will grow in USDA hardiness zone 6 or colder, and to encourage people to think about planting a greater variety of ornamentals. The interactive Plant Selector is available to allow users to search the University of Connecticut Plant Database to find trees, shrubs and vines which meet specific landscape situations and express particular ornamental traits. ... [Information of the supplier]
Plot studies often face problems with the identification of both fertile and sterile material. Numerous books need to be taken into the field to aid in identification of specimens. The Virtual Tree Guide of the Guianas which will available on CD and accessible through the WWW may assist researchers in finding a quick match of those species that are considered to be able to reach sizes over 10 cm DBH. Over 4000 specimens have been digitized in the Utrecht Herbarium. They are organized by genus and family. As the Utrecht Herbarium has adopted the APG-1 classification the families are named accordingly. Hence, Flacourtiaceae will be found under Salicaceae, as an example. In order to make identifications possible with Jan Lindeman's punch card system, we also provide a link to the windows program "Flora" and the keys for the Surinamese plant families, "Surifam", both of which are packed into one executable zip file "Zipflora" With Flora and Surifam, you are in possession of a fast and easy synoptical key of the families (old classification) of Suriname and part of Para, Brazil. ... [Information of the supplier]
Forest geneticists are frequently confronted with practical questions concerning the origin, the genetic variability, or the adaptability of trees, stands, or forest reproductive material. The posers of these questions can be biologists, ecologists, foresters, private forest owners, firms dealing with forest reproductive material, nature conservation organizations, and, of course, the forest geneticists themselves for their basic research. Awareness is growing within these groups that many of these questions can be answered with the help of genetic marker technology. However, the increasing number and variety of genetic markers available for forest tree species make it difficult for the so-called "end-users" of this technology to judge which type of marker is most suitable for the given purpose. The aim of this compendium is to provide end-users with guidelines for choosing markers that are suitable for the purpose at hand. ... [Information of the supplier]
The Wollemi Pine is one of the world's oldest and rarest tree species belonging to a 200 million year old plant family. It was known from fossil records and was presumed extinct until it was discovered in 1994 in the Wollemi National Park just outside Australia's largest city, Sydney. The mission of Wollemi Pine International is to conserve the Wollemi Pine for future generations and to raise awareness of conservation internationally. Through public participation, we will repopulate the Wollemi Pine and return royalties to fund conservation of the Pines in the wild and other threatened and endangered species. ... [Information of the supplier]
The Central Database for Cultivated Woody Plants in Europe Ginkgo (www.uni-duisburg-essen.de/ginkgo) now comes into existence, after many years of preparatory work, and at the instigation of the Board of the German Dendrological Society (DDG), and in co-operation with several universities, nurseries, arboretums, botanical gardens, park administrations, nature protection and memorial garden authorities. The homepage gives an insight into the status of the registration of remarkable trees (habitat, location, growth etc.) as well as providing further knowledge about trees and shrubs (nomenclature, origin, distribution, location, growth behaviour, morphology, use, propagation, diseases etc.). More information about the database Ginkgo is found in the same place under “General”, or through the database administration. All those who themselves, out of interest, within the framework of their practical work, or in the course of their studies and diploma work, are concerned in the collection and evaluation of data on trees and shrubs (e.g. registration of specimens, protection of woods, care of memorial gardens, new planting of woods, care of woods, scope of care) may participate in the construction of the Gingko Register (after creating username and password). The woody plants inventory of DDG (1974) and simplified are made available, scientific names are partly available via and are linked to the inventory. The making available of more data such as e.g. aids to age estimation, information about habitat demands, gardening or biological engineering application possibilities, etc., is being worked on. ... [Information of the supplier, translated]