416 Lesquereux's Descriptions 
liate or pinnate; pinnules obliquely attached to the rachis, 
varying from the obovate and obcordate to the broadly cune- 
ate form ; narrowed into a short broad petiole ; upper leaflet 
larger and broadly obovate, narrowed into a longer petiole ; 
nerves either dichotomous or simple, distinct ; stem thick, 
channelled, slightly margined like the branches. 
Genus CYCLOPTERIS. 
14. CYCLOPTERIS FIMBRIATA (spec. nov.). Leaves nearly 
round or truncate, unequally cordate at the base; margins, 
especially above, fringed with long, threadlike, linear, acute, 
flexuous, and nearly equal divisions ; nerve, flabelli-form, fur- 
cate from the base; nearly straight, distant, though very thin, 
parallel, ascending to the point of the divisions or fringes. 
15. CycLopreris LACINTATA (spec. nov.). Leaves orbicular, 
quadrate ; base equal and slightly cordate, irregularly fringed 
around by long, flexuous, acute divisions, somewhat unequal 
in length, and united in fascicles ; nerves flabelliform, forking; 
straight, very close and distinct ; surface covered with a coat 
of scales. ; 
16. CvcrorrERIs unpans (spec. nov.). Leaves broadly oval 
or nearly round, emarginate at the base, or irregularly cordate ; 
margins undulate and irregularly toothed; nerves flabelli- 
form, dichotomous, very slender and close, distinct, united in 
fascicles and thickened at and near the base. : 
17. CvcLorrEnis ELEGANS (spec. nov.). Leaves nearly orbi- 
cular, (the lobes of the base converging and embracing the 
stem, and the point of attachment being nearly central,) entire 
or slightly undulate in outline; nerves very distinct, deeply 
marked, radiating and dichotomous from the base where they 
are thickened ; arched. 
18. Cycnorreris mimsurA Lesqx. (Cyclopteris trichoma- 
noides Brongt. in parte). Leaves oval or round in outline, 
either symmetrical or unequally cordate, sometimes kidney- 
shaped, enlarged at the base, with equal or unequal, converg- 
