parallel venation

parallel venation

[‚par·ə‚lel və′nā·shən]
(botany)
A vascular arrangement in leaves characterized by the longitudinal (or nearly so) orientation of veins of relatively uniform size.
References in periodicals archive ?
Parallel venation has no central midrib; rather, it has several equal-size veins running the length of the leaf blade parallel to each other.
LEAF DESCRIPTION: SIMPLE, 3" to 6" long and 3/4" to 1" wide, recurving, entire margins, parallel venation. WHORLED at stem apex.
LEAF DESCRIPTION: SIMPLE, arising from basal clump, 12" to 18" long and 3/16" to 3/8" wide, linear shape with parallel venation, thick and stiff.
LEAF DESCRIPTION: Linear shape, 3' or longer and 1/2" to 1" wide, parallel venation, entire margins.
LEAF DESCRIPTION: Linear, 4' to 6' long and 1/2" wide (wider than 'Gracillimus'), sharply serrated margins and acuminate tip, parallel venation. WHORLED from clumps.
LEAF DESCRIPTION: SIMPLE, arising from basal clumps, 1 1/2' to 2 1/2' long and 1/4" to 3/4" wide, parallel venation, linear shape with finely serrated margins.
LEAF DESCRIPTION: SIMPLE, arising from basal clump, 4' to 5' long and 1/2" wide, parallel venation, linear shape with finely serrated margins.
LEAF DESCRIPTION: Linear shape, 8" to 12" long and 1/2" to 3/4" wide, parallel venation, entire margins.
LEAF DESCRIPTION: 2" to 6" long, appearing on branchlets, each branchlet having 3 to 5 leaves, lanceolate shape with entire margins, parallel venation.
Parallel venation Having veins that run parallel to the margins, as with grasses.
Monocots have parallel venations (veins), as opposed to the network of veins found in dicots.

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