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Under ideal conditions, O. claytoniana can reach heights of over 200 cm.
An easier way to distinguish sterile O. claytoniana from O. cinnamomea is to look at the the tip of the frond. If it is very pointed (less than 45 degrees, probably less than 30) it is Cinnamon Fern. If the angle is blunt (more than 45 degrees, maybe 90) it is Interrupted Fern. —Preceding unsigned comment added by Donlubin (talk • contribs) 04:59, 24 September 2007 (UTC)