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Gary Fewless

Key to the Ferns

30. Ultimate fertile segments nearly round, little if any longer than wide; blades 3-pinnate near base, i.e. each basal pinnae is fully twice pinnate. Mostly near the Mississippi River and in SW counties. Cheilanthes feei
30. Ultimate fertile segments clearly longer than wide; blades 2-pinnate near the base, i.e. each basal pinnae is only once pinnate-pinnatifid. A single WI collection on the St. Croix River.
Cheilanthes lanosa

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