An elliptical blade is not a true ellipse, but a superellipse–Evidence from two Michelia species

2021 | journal article. A publication with affiliation to the University of Göttingen.

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​An elliptical blade is not a true ellipse, but a superellipse–Evidence from two Michelia species​
Li, Y.; Niklas, K. J.; Gielis, J.; Niinemets, Ü.; Schrader, J.; Wang, R. & Shi, P.​ (2021) 
Journal of Forestry Research,.​ DOI: https://doi.org/10.1007/s11676-021-01385-x 

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Authors
Li, Yuping; Niklas, Karl J.; Gielis, Johan; Niinemets, Ülo; Schrader, Julian; Wang, Rong; Shi, Peijian
Abstract
Abstract The shape of leaf laminae exhibits considerable diversity and complexity that reflects adaptations to environmental factors such as ambient light and precipitation as well as phyletic legacy. Many leaves appear to be elliptical which may represent a ‘default’ developmental condition. However, whether their geometry truly conforms to the ellipse equation (EE), i.e., ( x/a ) 2  + ( y/b ) 2  = 1, remains conjectural. One alternative is described by the superellipse equation (SE), a generalized version of EE, i.e.,
Abstract The shape of leaf laminae exhibits considerable diversity and complexity that reflects adaptations to environmental factors such as ambient light and precipitation as well as phyletic legacy. Many leaves appear to be elliptical which may represent a ‘default’ developmental condition. However, whether their geometry truly conforms to the ellipse equation (EE), i.e., ( x/a ) 2  + ( y/b ) 2  = 1, remains conjectural. One alternative is described by the superellipse equation (SE), a generalized version of EE, i.e.,
Issue Date
2021
Journal
Journal of Forestry Research 
Organization
Fakultät für Forstwissenschaften und Waldökologie ; Burckhardt-Institut ; Abteilung Biodiversität, Makroökologie und Biogeographie 
ISSN
1007-662X
eISSN
1993-0607
Language
English

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