420 Lesquereux's Descriptions of 



ary pinnae linear lanceolate, deeply pinnatifid ; pinnules small, 

 oval, decurrent, joined together by their base, serrulate at the 

 summit ; nerves obsolete, pinnately forked ; nervules simple. 



36. Sphenopteris flagellaris (spec. nov.). Frond bipin- 

 natifid ; pinnae long, linear, flexuous, slender ; pinnules alter- 

 nate, oval, with a broad decurrent base, united together, 

 crenulate ; nerves bifurcate. 



37. Sphenopteris plicata (spec. nov.). Frond bipin- 

 natifid ? pinnae long, linear-lanceolate ; pinnules distant, very 

 open, oval, oblong, enlarged below, sessile on the winged 

 rachis, and united together ; pinnately lobate, and undulate 

 plaited ; medial nerves thick ; nervules obsolete. 



38. Sphenopteris glandulosa (spec. nov.). Frond tri^ 

 pinnately divided, forked above ; primary and secondary 

 pinnae opposite, long, perpendicular or recurved on the broad 

 striate rachis ; inferior pinnules equally three to five lobate, 

 cordate at the base, lobed round ; terminal leaflet acute, and 

 sometimes long pointed by the persistence of the broad medial 

 nerve ; superior pinnules smaller round, entire ; texture thick, 

 convex, glandular, punctulate, rough ; nervules entirely obso- 

 lete. 



39. Sphenopteris decipiens (spec. nov.). Frond pin- 

 nate ; pinnules elongated, pinnately lobed, lobes half round, 

 very obtuse, decurrent, and united from the middle ; the ter- 

 minal broader ; nerves undulate, broad ; nervules inclined on 

 the rachis, two to three times forked. 



40. Sphenopteris Newberryi (spec. nov.). Stem fork- 

 ing above in a very obtuse angle ; frond bipinnate ; secondary 

 pinnae from one to two inches long, linear-lanceolate, acute, 

 pinnately lobed ; inferior pinnules sessile by their whole base, 

 but distinct, irregularly undulate, lobed : superior ones con- 

 fluent, ovate, lanceolate, entire or scarcely undulate ; terminal 

 small and pointed ; nerves obsolete. 



41. Sphenopteris squamosa (spec. nov.). Frond tripin- 

 natifid ; secondary pinnae linear, 1J- inch long, obtuse ; pin- 

 nules nearly square or half round, very entire, sessile, the 



