Phloem
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Curtis, Lersten, and Nowak 2002 rev. 2015
Grape (
Vitis
) phloem longisection with compound sieve plates
Grape (
Vitis
) phloem longisection with compound sieve plates and lateral sieve areas.
Grape (
Vitis
) phloem longisection with rays
Grape (
Vitis
) phloem tangential section with sieve plates
Grape (
Vitis
) phloem with compound sieve plates
Grape (
Vitis
) phloem with compound sieve plates
Grape (
Vitis
) phloem longisection with compound sieve plates and companion cells.
Grape (
Vitis
) phloem fibers.
Cucurbita
stem longisection with sieve tube members, companion cells, and slime plugs.
Cucurbita
stem longisection with large metaxylem and sieve tube members with slime plugs.
Cucurbita
stem cross section: sieve tube members with slime plugs.
Cucurbita
stem cross section: sieve tube members with sieve plates, slime plugs, and companion cells.
Fraxinus
(ash) phloem with sieve plats and companion cells.
Fraxinus
(ash) phloem with compound sieve plates.
Solanum lycopersicum
(garden tomato) stem cross section showing internal phloem strands.
Solanum lycopersicum
(garden tomato) stem cross section with protoxylem, metaxylem, and internal phloem strands.
Ambrosia trifida
(giant ragweed) young leaf base: primary and secondary phloem and xylem.
Zea mays
(maize) stem longisection with sieve tube members, companion cells, and sieve plates.
Zea mays
(maize) sieve tube members, sieve plates (but no slime plugs), and companion cells.
Pine (
Pinus
) sieve cells with lateral sieve areas.
Pine (
Pinus
) sieve cells with lateral sieve areas.
Cucurbita
sieve tube members.
Maceration: sieve tube member with sieve plate and lateral sieve areas.
Cucurbita
maceration: sieve tube member with sieve plates and lateral sieve areas.
Cucurbita
sieve tube member with sieve plate and lateral sieve areas.
