bicollateral bundle


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bicollateral bundle

a VASCULAR BUNDLE of plants with two phloem groups, one internal and one external to the xylem. Examples of such plants are marrow, tomato.
References in periodicals archive ?
oxypetala 2' Annular collenchyma, more than two layers of palisade parenchyma in mesophyll, more than two vascular bundles in middle vein of the blade, bicollateral bundle in petiole 3 Bicollateral bundle in blade, three vascular bundles in middle vein, six bicollateral vascular bundles in petiole N.
oxypetala, the six species have a bicollateral bundle, a characteristic cited by Sculthorpe (1967) for the petiole of this genus.
Nymphaea oxypetala stands out from the other evaluated species for having a greater number of differential characters, including angular collenchyma and the absence of bicollateral bundles in the petiole.