Anat0190
Pinus (pine) tracheids with bordered pits and crassulae.
Anat0182
Pinus strobus (eastern white pine) tracheids.
Anat0169
Dicot leaf vein tracheids (SEM).
SEM0243
Cercidium (palo verde) leaf torn to show protoxylem in a minor vein (SEM).
SEM0244
Cercidium (palo verde) leaf torn to show pitted xylem cells in a minor vein (SEM).
Anat0168
Bignonia stem protoxylem.
fam0075
Cucurbita protoxylem.
Anat0178
Begonia protoxylem under polarized light.
fam0073
Cucurbita protoxylem with spiral and annular thickenings.
SEM0223
Spiral secondary wall from protoxylem (SEM).
Anat0186
Macerated Cucurbita stem protoxylem.
Anat0170
Ageratina altissima (white snakeroot) protoxylem.
SEM0215
Cucurbita maxima (pumpkin) protoxylem vessel element (SEM).
SEM0220
Cucurbita maxima (pumpkin) stem maceration: vessel element (SEM).
Anat0171
Ageratina altissima (white snakeroot) early xylem vessel development.
Anat0173
Ageratina altissima (white snakeroot) mature and developing xylem vessels.
Anat0172
Ageratina altissima (white snakeroot) stem longisection with mature and developing vessels.
Anat0175
Ageratina altissima (white snakeroot) xylem vessel development.
Anat0185
Ageratina altissima (white snakeroot) xylem vessel development.
Anat0177
Ambrosia trifida (giant ragweed) stem longisection with mature and developing xylem vessels under phase contrast.
Anat0613
Pastinaca (parsnip) vascular bundle cross section with protoxylem, metaxylem, procambium, and phloem.
Anat0189
Macerated Liriodendron (tulip-tree) stem with xylem vessel element with scalariform perforation plate; also fibers.
Anat0187
Macerated Cucurbita stem early metaxylem.
Anat0176
Vitis (Grape) wood tangential section with mature vessel.
Anat0180
Vitis (grape) wood with perforation plates on vessels.