Ferns and Fern Allies in the Kutztown-Fleetwood Area, Berks County, Pennsylvania (Continued)

Abstract

DRYOPTERIS MARGINALIS (L.) A. Gray. Rocky and stony slopes in woodland, on rocks, and on partly open stony banks. Common. Specimens with forked fronds, one small frond ternately divided, one plant with fronds with crowded and overlapping pinnae, one frond with no pinnae on lower half of one side, very small fruiting fronds from dry shale cliff, one plant with two normal fronds and two freak fronds only two to three inches wide, a number of plants with pinnules more prominently auricled at base, frequently on both sides. Forma Traillae (Lawson) n. comb. Lastrea marginalis p Traillae Lawson, Edinburgh New Phil. Journ. 19: 275 (1864). Nephrodium marginale, forma tripinnatifidunm Clute, Fern Bull. 15: 21 (1907); 19: 50 (1911). N. marginale, forma Traillae (Lawson) Clute, I.c. Dryopteris marginalis, forma tripinnatifida (Clute) Weath. AMER. FERN JOURN. 26: 61 (1936). Fairly common. Forma ELEGANS (J. Robinson) F. W. Gray. Occasional. Tripinnatifid, with the basal pinnule on the lower side of the lowest pinna longer than the others. DRYOPTERIS MARGINALIS X SPINULOSA Slosson. One station in Smoketown Hollow, 11 mi. s.e. of Bowers, another in mountain hollow s.e. of Flint Hill, beyond Lyons. Rare. One specimen with forked frond. DRYOPTERIS FILIX-MAS (L.) Schott. This species has never been found as far south as Pennsylvania and can hardly be claimed as belonging to the Kutztown-Fleetwood area; but in 1912 I purchased a plant of D. filix-mas from a nursery and planted it in my fern bed, where it thrived and multiplied. And evidently from the spores 89