Abstract
Polystichum stimulans (Kunze ex Mett.) Bedd. is a unipinnate lithophytic fern. Plant with unusual 3-4 times divison of frond was collected from Rohru, Shimla (H.P.). The possible cause of unusual division of frond might be due to cell necrosis and which has caused long cracking of apical meristimatic tissues resulted into the division of rachis to several times.
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