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SOME OBSERVATIONS ON THE COURSE OF THE VESSELS IN THE WOOD OF FRAXINUS EXCELSIOR L.
Author(s) -
Burggraaf P. D.
Publication year - 1972
Publication title -
acta botanica neerlandica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.871
H-Index - 87
eISSN - 1438-8677
pISSN - 0044-5983
DOI - 10.1111/j.1438-8677.1972.tb00744.x
Subject(s) - fraxinus , xylem , course (navigation) , geology , botany , biology , physics , astronomy
SUMMARY The vessels in the secondary xylem of Fraxinus excelsior , while running through the wood in a longitudinal direction, show a tangentially and radially curved course. Vessels are in contact over widely differing distances. The result is a rather loose three‐dimensional vascular network. The phenomena are discussed from an ontogenetical point of view, in relation to prevailing concepts of cambial activity.