Abstract
The node in 7 species of Umbellifers is multilacunar multitrace. The number of traces increases from the lower foliar nodes reaching a maximum at the node bearing the largest foliage leaf, and then decreases gradually till the node vearing the inflorescence, which is trilacunar three trace. The vasculature of the primary rachis has many traces which anastomose to form a diaphragm at the ‘node’ where secondary rachii arise. From the diaphragm three traces go to the next distal ‘internode’ of the primary rachis but become five due to division of the lateral traces.
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