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|1 Oil tubes on the fruit (0.6-) 0.8-1.0 mm wide; rays of the principal umbel 50-150; plant to 5.5 m in height, the hollow stems to 15 cm in diameter; lower leaves to 25 dm long; umbels to 5 dm across; [rare alien]|
1 Oil tubes on the fruit 0.3-0.5 (-0.8) mm wide; rays of the principal umbel 15-30 (-45); plant to 3 m in height, the hollow stems to 5 cm in diameter; lower leaves to 10 dm long; umbels to 3 dm across; [native]