Yezonia, a new section ofAraucaria (Araucariaceae) based on permineralized vegetative and reproductive organs ofA. vulgaris comb. nov. from the upper cretaceous of Hokkaido, Japan

@article{Ohsawa2006YezoniaAN,
  title={Yezonia, a new section ofAraucaria (Araucariaceae) based on permineralized vegetative and reproductive organs ofA. vulgaris comb. nov. from the upper cretaceous of Hokkaido, Japan},
  author={Takeshi A. Ohsawa and Harufumi Nishida and Makoto Nishida},
  journal={Journal of Plant Research},
  year={2006},
  volume={108},
  pages={25-39}
}
A new specimen of an araucarian cone,Araucaria nihongii, was found attached to the vegetative organs ofYezonia vulgaris, and is described asAraucaria vulgaris comb. nov. Thick branches show characteristic bark structure with lenticular patches. Secondary wood is usually araucarioid. Leaves are arranged helically on shoots, which are imbricate, appressed and fused to surface of the stem. External and anatomical features of leaves closely resembleBrachyphyllum. The seed cone is spherical with… 

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References

SHOWING 1-10 OF 40 REFERENCES
Upper Cretaceous Araucarian cones from Hokkaido : Araucaria nihongii sp. nov
TLDR
Ten small, permineralized cones 3.0–4.2 cm in diameter are described from the Late Cretaceous Upper Yezo Group of Hokkaido, Japan and are described as representing a new species of araucarian cone, Araucaria nihongii Stockey, Nishida et Nishida sp.
Diversity and significance of late cretaceous permineralized plant remains from Hokkaido, Japan
  • H. Nishida
  • Biology
    The botanical magazine = Shokubutsu-gaku-zasshi
  • 2006
TLDR
Middle to Late Cretaceous permineralized plants hitherto described from Hokkaido, Japan are summarized and recently-found materials are tentatively introduced with brief comments emphasizing their morphological and taxonomic significance.
The Araucariaceae: An evolutionary perspective
TLDR
Well-preserved Bunya section cones from Europe, South America and India suggest that this section was widespread in both hemispheres during the Jurassic, and that the section Bunya be retained in current taxonomic schemes even though it contains only one extant species.
IN SITU GYMNOSPERM POLLEN FROM THE MIDDLE JURASSIC OF YORKSHIRE
TLDR
The morphology of pollen grains yielded by male Gymnosperm fructifications from the Jurassic flora of Yorkshire is studied and discussed and it is suggested that all members of the Hirmerella-group have an epidermis with a special type of stoma.
Structure and Diversity of the Woody Conifer Seedling-Like Structures from the Upper Cretaceous of Hokkaido, Japan
TLDR
Permineralized conifer seedling-like structures have been found in calcium carbonate nodules from the Middle and Upper Yezo Groups (Upper Cretaceous) of Hokkaido and most closely resemble those produced by abnormal seedling growth in the extant Araucaria, section Bunya.
Structure and affinities of the petrified plants from the cretaceous of northern Japan and Saghalien XI A cupressoid seed cone from the Upper Cretaceous of Hokkaido
TLDR
A new genus of the Cupressaceae based on a permineralized conifer female cone from the Upper Cretaceous of Hokkaido, characterized by peltate bract-scale complexes consisting of a completely fused bract and scale bearing erect seeds.
Upper Cretaceous Conifer Leaf Fossils from the Black Creek Formation with an Assessment of Affinities Using Principal Components Analysis
Five types of fossil conifer foliage from the Upper Cretaceous Black Creek Formation of North Carolina have been reexamined from newly discovered material. The cuticular and gross morphology of
Cuticle Micromorphology of Araucaria de Jussieu
Cuticle micromorphology of leaves from all 20 species of the Southern Hemisphere conifer genus Araucaria de Jussieu was studied with scanning electron microscopy. Both juvenile and adult foliage and
Structure and affinities of the petrified plants from the cretaceous of Northern Japan and Saghalien III petrified plants from the upper cretaceous of Saghalien
Five species including two new species,Araucarioxylon kiiense Ogura,Taxodioxylon albertense (Penhal.) Shimakura,Cupressinoxylon cryptomerioides Stopes,Xenoxylon watarianum sp. nov. andCedroxylon
Studies on the Structure and Affinities of Cretaceous Plants
The authors comment on the importance of the work done on the flora of the Palaeozonic period, and the botanical interest that wqould attach to similar petrifactions of plants from all age of the
...
1
2
3
4
...