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The first extensive study of the Gnetophyta division of woody plants, first published in 1929.
H. H. W. Pearson, A. C. Seward, 2010
2
Pteridophytes and Gymnosperms
with the Single Order Gnetales Woody plants. Leaves opposite or whorled,
simple. broadly elliptic, strap-shaped, or scale-like. Secondary xylem with
foraminate vessels. Plants dioecious, rarely monoecious. "Flowers" mostly
unisexual ...
K.U. Kramer, Klaus Kubitzki, P.S. Green, 1990
3
Developmental Genetics of the Flower: Advances in Botanical ...
(1994) found that angiosperms nested within the Gnetales, which would imply a
Gnetales‐style cone was the start point for the origin of the flower. Gnetales have
compound cones, so this implies a pseudanthial origin of the flower, in contrast ...
4
Ecological Strategies of Xylem Evolution
Primitive. Vessels;. Gnetales. Viewed from the standpoint of radiation into and
exploitation of habitats by dicotyledons, origin of vessels is perhaps the most
significant initial factor. To appreciate this, we have only to compare the
geographical ...
Sherwin John Carlquist, 1975
5
The Dawn Angiosperms: Uncovering the Origin of Flowering Plants
The strict consensus tree of these two trees is shown in Fig. 8.10. For the matrix,
refer to Appendix 10.5. The result indicates that angiosperms are nested within
Gnetales in the strict consensus tree. The angiosperm-Gnetales group is ...
6
Plants in Mesozoic Time: Morphological Innovations, ...
Redrawn from Wieland (1906). have placed the Bennettitales comfortably within
an anthophyte clade that includes angiosperms and the Gnetales. The
Bennettitales–Gnetales relationship has come into question because nucleic
acid ...
7
Life's Solution: Inevitable Humans in a Lonely Universe
As with other gymnosperms, the reproductive organs of the Gnetales are located
on cones, but in this case they are remarkably flower-like.148 Even more
intriguing is a rather strange phenomenon known as double fertilization. In both
the ...
Simon Conway Morris, 2003
8
Fossil Plants: A Text-Book for Students of Botany and Geology
The question of relationship between the Gnetales and the Angiosperms,
especially the difficult problems connected with the endosperm, was fully
considered by Pearson4 in a paper on the reproductive organs of Gnetum
Gnemon published ...
9
Paleobotany: The Biology and Evolution of Fossil Plants
We have also included the Gnetales in this section since their fossil history is
poorly known and their relationship with other groups, despite the availability of
extant members, remains unsettled. Higher taxa in this chapter:
Gigantopteridales ...
Edith L. Taylor, Thomas N. Taylor, Michael Krings, 2009
10
Early Flowers and Angiosperm Evolution
As developed by some authors (e.g. Doyle, 1977), this notion of two main lines of
seed plant evolution interpreted angiosperms as the culmination of evolutionary
elaboration in the cycadopsid line, while Gnetales were viewed in the ...
Else Marie Friis, Peter R. Crane, Kaj Raunsgaard Pedersen, 2011
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UPSC IAS Civil Services Main Written Exam 2015: Syllabus for …
... Salient features of Cycada-les, Ginkgoales, Coniferales and Gnetales, their structure and reproduction; General account of Cycadofilicales, Bennettitales and ... «PrepSure, 九月 15»
Moon Helps Plants Mate, Finds Study
The paper talks about how a group of plants called gnetales produce these pollination drops that coincide with the full moon. Insects get attracted to pollination ... «The New Indian Express, 八月 15»
L'incredibile fascino della luna piena
Partendo dallo studio "Moonlight pollination in the gymnosperm Ephedra (Gnetales)" pubblicato su Biology Letters, Catarina Rydin e Kristina Bolinder si sono ... «Stile.it, 六月 15»
L'unica pianta che sincronizza la sua impollinazione con la luna …
Nello studio “Moonlight pollination in the gymnosperm Ephedra (Gnetales)” su Biology Letters due scienziate dell'università di Stoccolma, Catarina Rydin e ... «Greenreport: economia ecologica e sviluppo sostenibile, 四月 15»
Werewolf plant Ephedra foeminea releases pollen only in July's full …
In the case of Ephedra (Gnetales), both insect and wind pollination occur. However, not much is known about the evolution and mechanisms of pollinations in ... «Market Business News, 四月 15»
政治・経済・テクノロジーなどの知りたい情報をお届け
目：Gnetales。科：Gnetaceae。属：Gnetum。種：Gnetum gnemon（melinjo）となる。 メリンジョ果実の収穫時期は５月から７月、10月から12月、つまり春と秋の年２回。 «エコノミックニュース, 五月 14»
Unique ginkgoes are living fossils
Four are the vast tribe of flowering plants, from maples to rice; the conifers; the palmlike cycads; and an obscure clan called the gnetales, whose most famous ... «The Japan Times, 十月 13»
Pollen Fossils Reveal Flowering Plants to Have Emerged 100 …
Flowering plants (angiosperms) are believed to have evolved from long extinct, gymnosperm vegetation, related to cycads, conifers, Ginkgos and Gnetales. «Guardian Express, 十月 13»
The ginkgo revival
... flowering plants, from maples to rice; the conifers; the palmlike cycads; and an obscure clan called the gnetales, whose most famous member is the ephedra. «Washington Post, 十月 13»
No love for the lady ginkgos
Molecular phylogenies of seed plants differ from morphological analyses that place the weird Gnetales (Ephedra and Welwitschia) closer to the flowering plants, ... «Ecotone, 四月 12»
