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Floristic relationships between Eastern Asia and North America: test of Gray's hypothesis.
Am Nat. 2002 Sep; 160(3):317-32.AN

Abstract

Similarities in the temperate floras of eastern Asia and North America have been appreciated for more than 200 yr, but the generality of the floristic relationships among eastern Asia (EAS), eastern North America (ENA), and western North America (WNA), postulated by Asa Gray about 150 yr ago, has not been tested until now. In this article, floristic relationships based on genera shared among EAS, ENA, and WNA were examined at different spatial scales for different phylogenetic groups using complete floras. Floristic similarity between EAS and ENA is higher than that between EAS and WNA, and the floras of ENA and WNA are more closely related to each other than are the floras of EAS and ENA. Compared with ENA and WNA, the number of genera common to EAS and ENA is significantly higher in basal angiosperms and significantly lower in asterids. Floristic similarities tend to decrease from more basal to more modern lineages between EAS and ENA and between EAS and WNA but not between ENA and WNA. Similarly, from more basal to more modern divisions, the fraction of shared genera decreases between EAS and ENA and between EAS and WNA, whereas the floristic similarity between ENA and WNA tends to increase. Furthermore, floristic similarity between EAS and ENA increases with latitude. The causes of the observed patterns of floristic similarity between EAS, ENA, and WNA are discussed.

Authors+Show Affiliations

Research and Collections Center, Illinois State Museum, 1011 East Ash Street, Springfield, Illinois 62703, USA.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18707442

Citation

Qian, Hong. "Floristic Relationships Between Eastern Asia and North America: Test of Gray's Hypothesis." The American Naturalist, vol. 160, no. 3, 2002, pp. 317-32.
Qian H. Floristic relationships between Eastern Asia and North America: test of Gray's hypothesis. Am Nat. 2002;160(3):317-32.
Qian, H. (2002). Floristic relationships between Eastern Asia and North America: test of Gray's hypothesis. The American Naturalist, 160(3), 317-32. https://doi.org/10.1086/341523
Qian H. Floristic Relationships Between Eastern Asia and North America: Test of Gray's Hypothesis. Am Nat. 2002;160(3):317-32. PubMed PMID: 18707442.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Floristic relationships between Eastern Asia and North America: test of Gray's hypothesis. A1 - Qian,Hong, PY - 2008/8/19/pubmed PY - 2008/8/19/medline PY - 2008/8/19/entrez SP - 317 EP - 32 JF - The American naturalist JO - Am Nat VL - 160 IS - 3 N2 - Similarities in the temperate floras of eastern Asia and North America have been appreciated for more than 200 yr, but the generality of the floristic relationships among eastern Asia (EAS), eastern North America (ENA), and western North America (WNA), postulated by Asa Gray about 150 yr ago, has not been tested until now. In this article, floristic relationships based on genera shared among EAS, ENA, and WNA were examined at different spatial scales for different phylogenetic groups using complete floras. Floristic similarity between EAS and ENA is higher than that between EAS and WNA, and the floras of ENA and WNA are more closely related to each other than are the floras of EAS and ENA. Compared with ENA and WNA, the number of genera common to EAS and ENA is significantly higher in basal angiosperms and significantly lower in asterids. Floristic similarities tend to decrease from more basal to more modern lineages between EAS and ENA and between EAS and WNA but not between ENA and WNA. Similarly, from more basal to more modern divisions, the fraction of shared genera decreases between EAS and ENA and between EAS and WNA, whereas the floristic similarity between ENA and WNA tends to increase. Furthermore, floristic similarity between EAS and ENA increases with latitude. The causes of the observed patterns of floristic similarity between EAS, ENA, and WNA are discussed. SN - 1537-5323 UR - https://www.unboundmedicine.com/medline/citation/18707442/Floristic_relationships_between_Eastern_Asia_and_North_America:_test_of_Gray's_hypothesis_ L2 - https://doi.org/10.1086/341523 DB - PRIME DP - Unbound Medicine ER -
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