test
node1
PO:0009007
portion of plant
tissue
node2
PO:0009013
portion of meristem
tissue
node1->node2
node14
PO:0025127
primordium
node2->node14
node3
PO:0025128
phyllome primordium
node16
PO:0000017
vascular leaf
primordium
node3->node16
node4
PO:0004725
vascular leaf
primordium abaxial
side
node3->node4
node5
BFO:0000001
entity
node6
BFO:0000002
continuant
node5->node6
node6->node6
node10
BFO:0000004
independent
continuant
node6->node10
node7
PO:0000037
shoot axis apex
node7->node3
node15
PO:0025223
vegetative shoot apex
node7->node15
node8
PO:0009008
plant organ
node9
PO:0025004
plant axis
node8->node9
node13
PO:0025029
shoot axis
node9->node13
node10->node10
node17
BFO:0000040
material entity
node10->node17
node11
PO:0009011
plant structure
node11->node1
node12
PO:0025496
multi-tissue plant
structure
node11->node12
node19
PO:0025497
collective plant
structure
node11->node19
node12->node8
node13->node7
node14->node3
node15->node16
node16->node4
node18
PO:0025131
plant anatomical
entity
node17->node18
node18->node11
node20
PO:0025007
collective plant
organ structure
node19->node20
node21
PO:0009006
shoot system
node20->node21
node21->node13