Botanique.org
-
en :
-
fr :
- Home page :
-
:
- Statistics :
- Keywords :
- Site Map :
- Private Area :
Extant Gymnosperm Phylogeny
Molecular analysis have proved that Gnetales are not the Angiosperm sister-clade (Chaw et al., 2000). Angiosperms may have appeared during Jurassic from a group of fossil plants such as Bennetitales or Caytoniales.
Autre recherche intra-site avec les mots du titre sélectionné :
extant
gymnosperm
phylogeny
Gymnosperms are plants with seeds ( Spermaphytes) but with a naked ovule: the ovule is not included in a carpel that is an apomorphic feature of Angiosperms. A leaf-life structure (homologous to a leaf), a scale or megasporophyll bears the ovule.
Gymnosperms are probably monophyletic and include:
Cycadales (Cycas, Zamia) that are the more primitive Gymnosperms (Basal Gymnosperms),
Ginkgoales, a sister-clade of the clade including Conifers and Gnetales,
Gnetales (Ephedra, Gnetum, Welwitschia) are monophyletic and nested within Conifers,
Gnetales are the sister-clade of Pinaceae.
A lire également, les derniers articles parus sur le site :
Le limodore (Limodorum abortivum, Orchidaceae, Asparagales)
Lonicera etrusca (Caprifoliaceae, Dipsacales)
Le lilas (Syringa vulgaris, Oleaceae, Scrophulariales)
Anis (Illicium anisatum, Schisandraceae, Austrobaileyales)
Ginkgo biloba (Ginkgoaceae, Ginkoales)
Complétez votre recherche en cliquant sur les mots clés en début, fin de page, ou en utilisant notre moteur de recherche
Back to section | Top of Page
APG II (Angiosperm Phylogeny Group) (10 galeries photos)
Orchidées (Orchidaceae, Asparagales, Monocots)
Fruits complexes
Fruits multiples
Fruits charnus : baies et drupes.
IDDN Certification