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The Comparative Anatomy and Phylogeny of the Coniferales: The Abietineae, Part 2
Edward Charles Jeffrey
No preview available - 2015
Abies balsamea Abies grandis Abietineae Abietineous adult trees annual ring containing autumnal wood Botanical bract branches of adult central cylinder COMPARATIVE ANATOMY cone scale Coniferales Cycads described female cone female reproductive axis fibrovascular fossil fructiferous scale genus Sequoia Gray herbarium Gymnosperms haematoxylin highly magnified large number leaf traces Leland Stanford university ligneous cylinder lower series lower side marked Bridges medulla mesarch bundles mode of occurrence normal obviously occurrence of resin old stem parenchymatous peduncle phloem Pinus plate 69 plate 71 presence of resin present resin cells resin ducts occur resinous tissue result of injury ring of wood row of traumatic secondary wood seedling seen Sequoia gigantea Sequoia sempervirens shown in figure similar species of Abies species of Sequoia specimens superposed scales tangential rows Taxodineae tracheids transfusion tissue Transverse section traumatic resin canals traumatic resin ducts vegetative stem vigorous branches woody axis woody portion woody tissues wounded xylem young branch