Calcium Oxalate and Medullary Architecture in Xanthomaculina Convoluta

The anatomy of Xanthomaculna convolute shows adaptation to a vagrant life form and to the moisture conditions of its habitat. The differential swelling of the irregularly thickened upper cortex and the medulla, in addition to the rigid medullary structure, due to the deposition of calcium oxalate, a...

Full description

Saved in:
Bibliographic Details
Published inThe Lichenologist (London) Vol. 32; no. 5; pp. 505 - 512
Main Authors Modenesi, Paolo, Piana, Massimo, Giordani, Paolo, Tafanelli, Alessandra, Bartoli, Antonella
Format Journal Article
LanguageEnglish
Published Cambridge, UK Cambridge University Press 01.09.2000
Elsevier Ltd
Online AccessGet full text

Cover

More Information
Summary:The anatomy of Xanthomaculna convolute shows adaptation to a vagrant life form and to the moisture conditions of its habitat. The differential swelling of the irregularly thickened upper cortex and the medulla, in addition to the rigid medullary structure, due to the deposition of calcium oxalate, allow orderly hygroscopic thalline movements. The architecture of the medulla appears to be closely related to masonry-like arches where the material is only stressed by compression and the stresses are distributed at the hinges. The possible role of crystalline medullary deposition as a radiation reflector is also suggested.
Bibliography:PII:S0024282900000530
ArticleID:00053
istex:84F9EB10BA71850C05C2DCA6172ECCD9FDDAD5AC
ark:/67375/6GQ-TZS4W766-S
ISSN:0024-2829
1096-1135
DOI:10.1006/lich.2000.0276