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Topic: Gnetopsida


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  Gnetopsida
[ Ginkgoopsida ] [ Gnetopsida ] [ Hepaticopsida ]
Individual specimen entries are published in the sample database supplied with The Compleat Botanica for species or varieties of this supra-generic taxon.
For a description of the methodology followed in establishing this hierarchy see the note Nomenclature used in The Compleat Botanica.
www.crescentbloom.com /Plants/Classis/Gnetopsida.htm   (59 words)

  
 [No title]
The only inference may be that the taxon Gnetopsida is an artificial one, and Gnetum and Ephedra belong to quite different lineages of gymnosperms.
As to the phylogenetic position of the two Angiospermae classes, extant monocotyledons seem to be a paraphyletic group located near the root of the angiosperm branch; it emerged at the earliest stages of angiosperm evolution.
It seems that the effect of Ephedra extract on blood pressure and blood glucose concentration was mostly qualitatively and quantitatively represented by that of alkaloid contained and that effect of the extract mainly depended on that of alkaloid absorbed early after its application.
www.swsbm.com /Abstracts/Ephedra-AB.txt   (6185 words)

  
 De Botanie Website van Fred Triep- Welwitschia
De kleine groep van planten, die behoren tot de klasse Gnetopsida, hadden evenals de andere Naaktzadige Planten hun hoogtepunt in de geologische periode Jura (190 tot 136 miljoen jaar geleden).
Daarna nam hun aantal en verspreiding af, omdat ze niet konden concurreren met de Bedektzadige Planten (onze bloemplanten, waarbij het zaad in een afgesloten vrucht ligt).
Moleculair biologisch onderzoek in 1999 heeft echter uitgewezen, dat deze groep vreemde planten veel meer verwantschap heeft met de coniferen, de grootste groep van nu nog levende Naaktzadigen.
www.botaniewebsite.nl /welwitschia.html   (1027 words)

  
 GNETOPSIDA Meaning and Definition - Dictionary - eLook.org
GNETOPSIDA Meaning and Definition - Dictionary - eLook.org
[noun] gymnospermous flowering plants; supposed link between conifers and angiosperms; in some systems classified as a class (Gnetopsida) and in others as a subdivision (Gnetophytina or Gnetophyta)
Synonyms: Gnetopsida, class Gnetopsida, Gnetophytina, subdivision Gnetophytina, Gnetophyta
www.elook.org /dictionary/gnetopsida.html   (43 words)

  
 Gnetopsida   (Site not responding. Last check: 2007-11-02)
Gymnospermous flowering plants; supposed link between conifers and angiosperms; in some systems classified as as class (Gnetopsida) and in others as a subdivision (Gnetophytina or Gnetophyta).
English words defined with "Gnetopsida": class Gnetopsida, class Gymnospermae ♦ division Gymnospermophyta ♦ Gnetophyta, Gnetophytina, Gymnospermae, Gymnospermophyta ♦ subdivision Gnetophytina.
Source: compiled by the editor from various references; see credits.
www.websters-online-dictionary.org /Gn/Gnetopsida.html   (242 words)

  
 The Botanical Garden of the University of Naples   (Site not responding. Last check: 2007-11-02)
The class Cycadopsida is represented by the genera Cycas, Encephalartos, Dioon, Zamia, Macrozamia, Ceratozamia.
The only living species of Ginkgoopsida, Ginkgo biloba, is in the collections, and there are several species of Ephedra, representing the Gnetopsida.
The majority of the plants in this area belong to the class Pinopsida.
www.ortobotanico.unina.it /StoriaEn/storia_eng.htm   (3599 words)

  
 American Journal of Botany, 66, 3, March, 1979   (Site not responding. Last check: 2007-11-02)
The cells lining the cleft and the transfer cells which have wall ingrowths along the tangential wall facing the locule may be involved in the secretion of substances for pollen tube growth.
C-Glycosylflavones in the Gnetopsida: A Preliminary Report, 343-346
Based on the present preliminary survey the apparent absence of other flavonoid types indicates that C-glycosylflavones may be a unifying characteristic of the Gnetopsida.
www.botany.org /ajb/00029122_di001783.html   (2630 words)

  
 ephedra vulgaris - , ephedra herb, com ephedra   (Site not responding. Last check: 2007-11-02)
Ephedra distachya L. shrub family Gnetaceae Ephedraceae, 25 cm 50 cm high, grows Asia Japan.
Ephedra Sinica herb which has been used traditional Chinese There other varieties ephedra - vulgaris, nevadensis antisyphilitica, which ephedra vulgaris Ephedra Ephedra distachya France Scientific classification Kingdom: Plantae Division: Gnetophyta Class: Gnetopsida Order: search: - Web - Images - News - Blogs - Shopping.
Ephedra (also known There other varieties ephedra - vulgaris, nevadensis antisyphilitica, which ephedra vulgaris Ephedra Ephedra distachya France Scientific classification Kingdom: Plantae Division: Gnetophyta Class: Gnetopsida Order: search: - Web - Images - News - Blogs - Shopping.
ephedra.sekob.com /ephedra-vulgaris.html   (628 words)

  
 class gnetopsida - definition, thesaurus and related words from WordNet-Online   (Site not responding. Last check: 2007-11-02)
class gnetopsida - definition, thesaurus and related words from WordNet-Online
Hint: double-click any word on the page to get it searched!
Gnetopsida, class Gnetopsida, Gnetophytina, subdivision Gnetophytina, Gnetophyta - gymnospermous flowering plants; supposed link between conifers and angiosperms; in some systems classified as a class (Gnetopsida) and in others as a subdivision (Gnetophytina or Gnetophyta)
www.wordnet-online.com /class_gnetopsida.shtml   (67 words)

  
 KanCRN SciLi: Searching for in BIOLOGY
This effort is supported by grants, program income, and endowment fund earnings.
Lycopodiopsida Psilotopsida Equisetopsida Polypodiopsida Ophioglossopsida Cycadopsida Coniferopsida Ginkgoopsida Gnetopsida Other Types of Listings Angiospermopsida Bio
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pathfinderscience.net /teachers/urls/results.cfm?SCIENCE=BIOLOGY&SEARC...   (8315 words)

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