Annular and spiral vessels, isolated and w.m.
Annular and spiral vessels, l.s.
Callose on sieve plates of Vitis vinifera (grape) during the winter
Lactiferous vessels, l.s. stem of Euphorbia (spurge)
Lactiferous vessels, t.s. of Asclepias, milkweed
Lactiferous vessels, tangential l.s. of Taraxacum root
Netted venation, portion of dicot leaf w.m. showing venation only
Pitted vessels, isolated and w.m.
Pitted vessels, l.s.
Reticulate vessels, l.s.
Reticulate, annular, and spiral vessels, isolated and w.m.
Scalariform vessels, isolated and w.m.
Scalariform vessels, l.s.
Sieve plates in top view, t.s. of Cucurbita stem showing large structures
Sieve tubes, sieve plates and vessels, l.s. of stem of Cucurbita pepo
Tracheids with bordered pits, wood of Pinus l.s. stained with thionine |