CHAPTER XIll 
NEW YORK FERN 
Dryopteris noveboracensis. 
Rootstock wide-creeping, forking, brown, slender, bearing a 
few minute, pale-brown, ovate-deltoid, acuminate scales; leaves 
scattered along extensions of rootstock, forming czspitose crowns 
at its growing ends: roots few, springing from rootstock. 
Leaves ascending or suberect, withering in autumn, six to 
twenty-nine inches long, sporophylls usually longer and narrower 
than sterile leaves. 
Petioles about one-fifth to one-third as long as leaves, slender, 
brownish-straw-colored, furrowed on face, bearing a few small, 
pale-brown, ovate, acuminate scales: fibrovascular bundles two, 
flattish. 
Blades lanceolate, tapering both ways, two and one-half to 
seven and one-half inches broad, pinnate: apex pinnatifid, 
long-acuminate: pinnz about nineteen to thirty pairs, sessile, 
alternate or opposite; principal pinnz deeply pinnatifid, acu- 
minate: upper and lower pinnz acute to obtuse, the lower more 
or less distant and gradually reduced to mostly toothed or simply 
auriculate lobes: segments oblong or oblique, obtuse to acute, 
entire or crenately toothed: margins ciliate: rachis and midribs 
pubescent: surfaces otherwise sparingly pubescent along veins: 
