. A popular description of the common Oregon ferns; contribution from the Herbarium of the University of Oregon. THE COMMON OREGON FERNS ff. Fronds bipinnate,sori curved. AthyriumPage 17. BB. Sori naked. C. Sori roundish; not usual-ly more than twice aslong as broad. d. Fronds bi-tr:pinnatificlor ternate. PhegopterisPage 17

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Keywords: ., bookcentury1900, bookdecade1910, bookidpopulardescr, bookyear1913