Apg Iii Pdf

Le origini e la classificazione delle Angiosperme. Analyse des familles des plantes. It has long been recognized that the limits of Molluginaceae s. Relationships within Campanulaceae s. Figures References Related Information.

APG IV system

APG III system

Presl Convolvulaceae Juss. The recognition of a number of new but small families is necessitated by recent phylogenetic work on core Caryophyllales. Aphanopetalaceae Doweld Cercidiphyllaceae Engl. Presl Atherospermataceae R. It need not be adopted, however.

Tank, Kenneth Wurdack, Jenny Q. From Wikipedia, comment trouver le leader en vous pdf gratuit the free encyclopedia. Siparunaceae Schodde Magnoliales Juss.

APG IV systemAPG III system

In general, the broader circumscriptions have been favoured and are adopted here. Your password has been changed.

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For the most part, relationships among families included in Crossosomatales have not been suggested before. For further discussion on the variation in the groups discussed, potential apomorphies, etc.

Furthermore, genera that used to be included in Icacinaceae s. Note that relationships of Trochodendrales and Buxales remain unclear, although they are certainly to be placed in this part of the tree. Genera plantarum ad exemplaria imprimis in herbariis kewensibus servata definita. The four genera included show considerable variation, although their basic morphology, anatomy and chemistry are poorly known. Juglandaceae are expanded to include their sister clade, the monogeneric Rhoipteleaceae.

Fay An expanded Amaryllidaceae, including Agapanthaceae and Alliaceae, are recognized here Amaryllidaceae was recently conserved over Alliaceae, despite Alliaceae being the older name. However, pending further studies, Peraceae are not recognized here. See text for literature supporting these relationships. Further detail on relationships can be seen in the phylogenetic tree below.

Three families, Icacinaceae, Metteniusaceae and Oncothecaceae, are to be placed in this general area of the tree. Presl Aristolochiaceae Juss. Tools Request permission Export citation Add to favorites Track citation. Geraniales are a heterogeneous and poorly known order. Biebersteiniaceae Schnizl.

However, it might be better in this case to create a larger single family for the larger clade. Backlund and Bremer's main principle is that taxa that are recognized formally should be monophyletic.

Several characters support the combined group. However, this seems unnecessary and more likely to cause confusion than clarity. Note that relationships among many families in Lamiales, and to a certain extent also their limits, are still unclear. The classification is shown below in two versions. Haandbog i den systematiske botanik.

Angiosperm Phylogeny Website

Poales Small Anarthriaceae D. They could probably be combined with one of the other commelinid orders should they fall as sister groups.

As the order is now defined, Staphyleales Mart. Nonetheless, the name Stixaceae Doweld is available if it is required. Salicaceae are broadly drawn, i. Relationships of Boraginaceae s.

Mitrastemonaceae is a morphologically distinctive holoparasitic family that is well embedded in Ericales. General History of Dichlamydious Plants. The recognition of Myodocarpaceae results from our improved understanding of relationships of members included formerly in Araliaceae.

Along with the publication outlining the new system, there were two accompanying publications in the same issue of the Botanical Journal of the Linnean Society. Paulowniaceae Nakai Pedaliaceae R. Anacampserotaceae, Portulacaceae s.

APG III system

Agardh as defined by Cheek. They are not particularly distinctive morphologically and so do not warrant immediate ordinal status, although Dasypogonales Doweld is available. Angiosperm Phylogeny Group. Some of us would prefer a vastly expanded circumscription of Scrophulariaceae, far beyond what it has ever included, whereas others are not so inclined.