. Contributions from the Botanical Laboratory and the Morris Arboretum of the University of Pennsylvania, vol. 13. Botany; Botany. 82 Am ERIC AX Fern Journal 11 Presumed pinxatu idum—platYxVeurox crosses Asplenium pinnafifidum, a phase with acuminate kjbes instead of tlie obtusish ones of figs. 1 and 6; from York County, Pa., 73 natural size. In this ease the three presumed liybrids, wliich follow, do not form a series from one end-member to the other. Apparently, as in tlie analogous A. ehenoidcs Seott. The parent sp.'cM's are too distantly related; the liybrids combine parental characters in
. Contributions from the Botanical Laboratory and the Morris Arboretum of the University of Pennsylvania, vol. 13. Botany; Botany. 82 Am ERIC AX Fern Journal 11 Presumed pinxatu idum—platYxVeurox crosses Asplenium pinnafifidum, a phase with acuminate kjbes instead of tlie obtusish ones of figs. 1 and 6; from York County, Pa., 73 natural size. In this ease the three presumed liybrids, wliich follow, do not form a series from one end-member to the other. Apparently, as in tlie analogous A. ehenoidcs Seott. The parent sp.'cM's are too distantly related; the liybrids combine parental characters in an erratic way, and develop some details of lobing and cutting not shown by either parent. 12 Tliis curious plant, here shown about half natural size, was found by Sadie F. Price near Bowling Green, Kentucky, many years ago, and distributed as A. pinnatifidioit. It may well represent, liowever. a hybrid with A. plat^1 neuron, similar elongate lower divisions being known in A. ehrnoides. 13. A. stotleri Wherry, from the type station in Jeffer- son Co., AV. Va. Although the rounded lobes are anomalous, this is still interpreted, as it was origin- ally, as having developed by hybridizatiou of th.' two species under consideration. This is a frond on a plant recently collected by Mr. Thomas X. McCoy in Boyd Co., Ky. It appears to represent another result of the same crossing, being intermediate in texture and sorus-color between the two presumed parents. All three of these may be referred to as A. pinnatifidnm y( platffncuron: or. if a single name is desired, that first proposed for a hybrid between these two species, A. stotleri. may be extended to cover the others, even though their resemblance is but slight.^^ A typical fertile frond of .1. platyneuron (L.) Oakes. y^ natural sizr. 10 This plant is (U'snilH-d .'i« n now spocics on page 104. 14 15 C4 . ^I ) ' I tiiiiU "I I. Please note that these images are extracted from scanned page images that may have been digitally en
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