 Pine stem cross-section showing xylem and phloem |
 Pine phloem with crushed old phloem |
 Pine: longitudinal section through cambium |
 Pine: tangential longitudinal section of secondary xylem |
 Pinus strobus: xylem cross-section. |
 Pinus strobus: xylem tangential-longitudinal section |
 Pinus strobus: radial-longitudinal section. Note pits in ray tracheid at the top of the ray crossing this image. |
 Drimys (vesselless angiosperm) in transverse section through xylem. |
 Drimys secondary xylem ray in transverse section of a stem |
 Drimys stem in radial-longitudinal section showing ray cells. |
 Drimys xylem in tangential-longitudinal section |
 Closer view of Drimys stem xylem showing tapered, non-perforated tracheid ending. |
 Drimys tracheid pitting |
 Drimys tracheid pitting |
 Tilia stem transverse section |
 Tilia secondary phloem |
 Tilia phloem close view |
 Tilia phloem in radial-longitudinal section. Note alternating bands of fibers and sieve tube members. |
 Tilia periderm in radial-longitudinal section |
 Wide view of Quercus alba xylem transverse section showing very wide earlywood vessels |
 Latewood portion of Quercus alba xylem growth ring |
 Transverse xylem section from Quercus alba showing wide and narrow rays. |
 Transverse xylem section from Quercus alba showing thick-walled fibers |
 Quercus alba xylem in tangential-logitudinal section showing a wide ray |
 Quercus alba xylem in radial-logitudinal section showing a wide vessel |
 Quercus alba xylem in radial-logitudinal section showing fibers |
 Quercus alba xylem in radial-logitudinal section showing short parenchyma cells |
 Juglans xylem transverse section. |
 Juglans (black walnut) xylem tangential-longitudinal section |
 Juglans (black walnut) xylem radial-longitudinal section showing tyloses in wide vessel |
 Juglans (black walnut) xylem radial-longitudinal section showing simple perforation plates in wide vessels |
 Young Sambucus stem |
 Sambucus xylem growth ring. From left: pith, primary xylem, secondary xylem, cambium, secondary phloem |
 Sambucus xylem in transverse section |
 Sambucus cambial region. Note crystals in phloem cells |
 Young Liriodendron stem |
 Liriodendron secondary xylem |
 Liriodendron stem showing ray dilatation in the phloem |