Molecular Biology and Genetics
Statistics of barcoding coverage
Specimens with Sequences:100
Specimens with Barcodes:75
Species With Barcodes:1
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." This subclass contains the single extant genus Ginkgo under order Ginkgoales, family Ginkgoaceae. Its only extant species is Ginkgo biloba, the Maidenhair Tree.
The following diagram shows a likely phylogenic relationship between subclass Ginkgoidae and the other Equisetopsida subclasses.
- 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.
- 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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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.
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