This resource gives an overview of the known chromosome numbers, up to now, within the Asteraceae. Through a detailed search mask the chromosome numbers, the taxa investigated, and bibliographic references are accessible. Publications up to and including 2005 are recorded in the resource. [Editorial staff vifabio]
The SOL Genomics Network (SGN) is a clade oriented database dedicated to the biology of the Solanaceae family which includes a large number of closely related and many agronomically important species such as tomato, potato, tobacco, eggplant, pepper, and the ornamental Petunia hybrida. SGN is part of the International Solanaceae Initiative (SOL), which has the long-term goal of creating a network of resources and information to address key questions in plant adaptation and diversification. A key problem of the post-genomic era is the linking of the phenome to the genome, and SGN allows to track and help discover new such linkages. ... [Information of the supplier]
The CGP is a resource for the Compositae, one of the largest and ecologically successful families. Lettuce is one of the top ten US crops and sunflower ranks #14 worldwide. The Compositae also includes many minor crops, important weeds, and species with novel biochemistries. The CGP transitions basic genomics information to crop improvement by leveraging information from the sequencing and functional genomics of model organisms. In turn, it will contribute data to the synthetic information being developed across all plants. ... [Information of the supplier, modified]
This checklist is intended as a nomenclatural rectifier, to give an overview of the distribution of the species and as a basis for future work with nomenclature and typification. All species reported from Sweden and not definitely dismissed by later authors are included. Thus, the fact that a taxon is included here does not mean that it has been accepted by me. ... [Information of the supplier]
The Cichorieae Portal is being established as a convenient access to the existing knowledge about this difficult group of plants, based on authoritative taxonomic information. It is designed to serve both the specialist and the occasional visitor: (*) providing a geographically referenced species inventory of the entire group with identification tools (interactive keys); (*) offering species pages with descriptions, images, distributional, ecological and other data; (*) facilitating cooperation among workers (professionals as well as amateurs) of the group; (*)undelayed integration of new data and research results; (*)aiming at an encyclopedic knowledge base of the whole group ... [Information of the supplier]
The Hieracium study group developed from an international collaboration (first taxonomic contacts in 1992, addition of molecular and cytological approaches (1997 & 1998), joint projects and presentations began in 1999), and was finally established in 2002 as an interdisciplinary research team within the Institute of Botany, Academy of Sciences of the Czech Republic. Our principal aim is to contribute to the understanding evolutionary processes in the genus Hieracium sensu lato. ... [Information of the supplier]
The Global Compositae Checklist is a searchable integrated database of nomenclatural and taxonomic information for one of the largest plant families in the world (also known as the Asteraceae). The database is compiled from many contributed datasets and is continually being edited and updated and should be considered a working checklist. Datasets for the Compositae from across the world have been integrated in the Global Compositae Checklist using purpose designed Checklist Integration software (C-INT, Landcare Research, New Zealand). Names are matched using a set of rules and a consensus name is generated with all original data sources linked to that name. In this way no information is lost and the consensus name is a summary of all information from multiple data providers that are in agreement on any given field. Entries are complete to differing levels depending on the data contributed (e.g. only some data sources have type information). Broad distribution data has been included, using the TDWG Geographic Standard although, as this is derived from the data contributed, the distribution is not necessarily comprehensive. Taxonomic concepts are also derived from the data sources, using a system of prioritised ranking where local datasets have more weight that global. ... [Information of the supplier]
The Smithsonian Institution has a long history of monographic and floristic work on the plant family Gesneriaceae, one of the largest families of the Lamiales as now circumscribed. Conrad V. Morton worked on the family from the 1930s until his death in 1972. Shortly after Morton’s death, Dr. Laurence E. (Larry) Skog was hired to continue research on Gesneriaceae in the Smithsonian’s Department of Botany, and continues to work on the group since retiring in 2003. In large part due to the work of these two scientists, the United States National Herbarium (US) has grown to have one of the largest and richest collections of Gesneriaceae in the world, with approximately 28,000 specimens and including about 1,000 types. Although the emphasis of the collection is on New World material it includes many specimens from the Old World, with particularly significant holdings of Chinese, Philippine, and Pacific Island material. The department also maintains a small living collection of approximately 300 accessions in its research greenhouses in Suitland, Maryland. ... [Information of the supplier]
The first aim of "A World of Pinguicula" is to collect informations on genus Pinguicula and make it easily available for all Pinguicula lovers via internet. The second aim is to preserve in culture as many species, forms and hybrids as possible of truly identified Pinguicula thus preserving indirectly wild populations from field collection. The best way to preserve a species is to spread cuttings or seeds to as many people as possible, you can then beg a piece back if you loose it later. This will be actively encouraged on this site through the Cutting Exchange and Seed Distribution Schemes (soon). ... [Information of the supplier]
Loasaceae are a striking plant family, not least because of their often extremely intricate floral morphology and their frequently very painful stinging hairs. Little progress, however, has been made in the knowledge of this family since the brilliant revision by Urban & Gilg in 1900, i.e. rather exactly 100 years ago. In the meantime a lot of new specimens have accumulated in the herbaria and Urban & Gilgs taxonomical and systematical conclusions can now be tested on the basis of much more and generally very much better material. However, the strongest impetus for new insights into Loasaceae came from extensive field studies, carried out in the past few years, primarily in northern South America. Due to field data, cultivation of many taxa and a revision of much herbarium material of the subfamily Loasoideae new insights have been gained. A large number of new species, especially in the Andes, have been discovered. Xylopodia, a new genus, which had not been previously collected, was encountered in Northern Peru and described. It proved to be intermediate in many crucial characters and generally of much phylogenetic relevance, indicating possible evolutionary trends in the subfamily Loasoideae. The taxonomical re-arrangements are based on seed surface, inflorescence, staminodial, petal and sepals morphology, cytology, habit (including leaf morphology and underground structures) and distribution and ecology. A largely new classification esp. for the subfamily Loasoideae has recently been published. A comprehensive overview over these changes is given in: M. Weigend: Nasa and the conquest of South America (1997), which is available in many major herbaria (ca. 60 copies). However, while validly published, it is not fully accessible. Therefore the crucial points of this study are here made generally available. The new entities are based on a wide range of characters and some of the re-arrangements are also supported by the extensive data on iridoid distributions in the family (Mueller & Weigend 1998, 1999, Mueller et al. 1998, 1999). Attempts to provide a molecular phylogeny of Loasaceae, sampling a limited number of taxa, have been made in the past few years (Hempel et al. 1995, Hempel & Jansen 1996, Moody & Hufford 1999). Moody & Hufford (within the limits of their sampling) found very good support for the genera of Loasoideae as described by Weigend in 1997. However, the respective molecular phylogenies are highly divergent in two key issues. Hempel found the genus Eucnide to be derived from within Mentzelia and the Gronoviaceae as isolated within the family, whereas Moody & Hufford found the genus Eucnide to be sister to the rest of Gronoviaceae and Loasaceae (i.e. the most basal taxon within the group) and the "Gronoviaceae" as sister to Mentzelia. Morphology certainly seems to be more consistent with the results of Hempel & Jansen, but more detailed molecular data may ultimately show that the relationships as indicated by Moody & Hufford are correct and that their disagreement with morphological data is due to extensive homoplasy. While a reliable molecular phylogeny is wanting I suggest to adhere to a morphological classification. This web site is supposed to provide all relevant data on the family, including the new taxa, generic synonyms, short descriptions and a key. The vast majority of the relevant references are listed, but this listing is by no means exhaustive. Lists of all infrageneric entities and ultimately of the ... [Information of the supplier]
