Schizaea pusilla Pursh

Rhizome short and slender, densely rooting, mostly simple; lvs numerous, glabrous, the sterile 2–6 cm × 0.3–0.4 mm, entire, curled, without a petiole; fertile lvs erect, 8–12 cm, the fertile segments pinnate, with 4–7 pairs of pinnae 2–3.5 × 0.4–0.6 mm; sporangia 8–14 per segment; 2n=206. On hummocks in bogs or wet grassy places, in acid soil; irregularly from Nf. and N.S. to L.I., N.J. and Del.; reported from the Bruce Peninsula, Ont.; rare and local.