part_of part of part of long cell 長細胞 (Japanese, exact) c&#233lula larga (Spanish, exact) PO:0004717 In the leaf epidermis of Poaceae and Joinvilleaceae, long cells and short cells often alternate in longitudinal rows. If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. plant_anatomy A more or less rectangular leaf pavement cell in which the proximodistal dimension is several times longer than the transverse dimension. vascular leaf leaf pavement cell