test
node1
PO:0005597
cambium
node2
PO:0005598
vascular cambium
node1->node2
node3
PO:0009007
portion of plant
tissue
node4
PO:0009013
portion of meristem
tissue
node3->node4
node12
PO:0020145
lateral meristem
node4->node12
node5
BFO:0000001
entity
node6
BFO:0000002
continuant
node5->node6
node6->node6
node9
BFO:0000004
independent
continuant
node6->node9
node7
PO:0009008
plant organ
node8
PO:0025004
plant axis
node7->node8
node8->node12
node9->node9
node13
BFO:0000040
material entity
node9->node13
node10
PO:0009011
plant structure
node10->node3
node11
PO:0025496
multi-tissue plant
structure
node10->node11
node11->node7
node12->node1
node14
PO:0025131
plant anatomical
entity
node13->node14
node14->node10