Overview

Comprehensive Description

Description

Dioecious, resinous tree to 40 m. Petiole long; leaves alternate or in clusters of 3-5, fan-shaped, usually 2-lobed, with dichotomous, parallel veining. Inflorescences borne on spur shoots. Male flowers catkin-like; anthers borne in pairs on an axis. Female flowers of 2 ovules, borne on a long peduncle. Fruit drupe-like, with a fleshy outer part; inner bony.
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© Mark Hyde, Bart Wursten and Petra Ballings

Source: Flora of Zimbabwe

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
Specimen Records: 80
Specimens with Sequences: 98
Specimens with Barcodes: 73
Species: 1
Species With Barcodes: 1
Public Records: 64
Public Species: 1
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Source: Barcode of Life Data Systems (BOLD)

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Barcode data

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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Wikipedia

Ginkgoidae

Ginkgoidae is a subclass of Equisetopsida in the sense used by Mark W. Chase and James L. Reveal in their 2009 article "A phylogenetic classification of the land plants to accompany APG III."[1] This subclass contains the single extant genus Ginkgo under order Ginkgoales, family Ginkgoaceae.[2] Its only extant species is Ginkgo biloba, the Maidenhair Tree.

Phylogeny[edit]

The following diagram shows a likely phylogenic relationship between subclass Ginkgoidae and the other Equisetopsida subclasses.[2]

Equisetopsida








 Marchantiidae 

















 Bryidae 















 Anthocerotidae 













 Lycopodiidae 











 Equisetidae 





 Ophioglossidae 





 Marattiidae 





 Polypodiidae 









 Cycadidae 



 Ginkgoidae 





 Gnetidae 



 Pinidae 







 Magnoliidae 










References[edit]

  1. ^ Mark W. Chase & James L. Reveal (2009). "A phylogenetic classification of the land plants to accompany APG III". Botanical Journal of the Linnean Society 161: 122–127. doi:10.1111/j.1095-8339.2009.01002.x. 
  2. ^ a b Maarten J. M. Christenhusz, James L. Reveal, Aljos Farjon, Martin F. Gardner, Robert R. Mill, Mark W. Chase (2011). "A new classification and linear sequence of extant gymnosperms". Phytotaxa 19: 55–70. 
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Ginkgoaceae

The Ginkgoaceae is a family of gymnosperms which appeared during the Mesozoic Era, of which the only extant representative is Ginkgo biloba, which is for this reason sometimes regarded as a living fossil. Formerly, however, there were several other genera, and forests of ginkgo existed. Because leaves can take such diverse forms within a single species, these are a poor measure of diversity, but wood structure points to the existence of diverse ginkgo forests in ancient times.[1]

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