Comparative wood anatomy ofCoriaria |
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Authors: | Kiyotsugu Yoda Mitsuo Suzuki |
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Institution: | (1) Department of Biology, College of Liberal Arts, Kanazawa University, 920 Kanazawa, Japan |
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Abstract: | Wood anatomy ofCoriaria was surveyed to clarify generic features on the basis of 14 species collected from various regions of the World to cover
the whole range of geographic distribution and habitual variation. Wood anatomy ofcoriaria is considerably uniform, and the species share a combination of the following features: 1) pores are thin-walled, polygonal
in outline and mostly in multiples; 2) vessel elements and libriform fibers are very short; 3) perforation plates are exclusively
simple; 4) intervessel pits are alternate; 5) vascular tracheids are present; 6) wood parenchyma is vasicentric and sometimes
confluent; 7) rays are heterogeneous and large. Its species differ in several characters, such as distinctness of growth rings,
pore size, pore patterns, type and abundance of wood parenchyma, and distinctness of storied structure. Comparisons among
species indicate that the species of the Northern Hemisphere show a tendency toward having semi-ring porosity, while those
of the Southern and Western Hemisphere have diffuse porosity. The other infrageneric variations appear to be related to different
habits of the species rather than to geographic distribution. Small trees mostly have confluent and vasicentric parenchyma
composed of fusiform cells and distinctly storied tissues, while shrubs and herbs have less abundant parenchyma which is vasicentric
and comprises strands of two to four cells and indistinctly storied tissues. |
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Keywords: | Coriaria Coriariaceae Wood anatomy |
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