Box 25, Folder 4: Ferns III

[Sketch-Cyclopteris undans].

Cyclopteris undans, Lesquereux Geol. Penn 2 p 855 pl 4 figs 12-22 & pl 5 fig 1,2.

Leaves broadly oval or nearly round, emarginate at the base or irregularly cordate; margins undulate irregularly serrate; nerves flabelliform, dichotomous, very slender and close, distinct, united in fascicules, and thickened at and near the base, arched.

(This is only a part of a fern -- Neuropteris undans q.v.)

Coal Measures Middleport Penn.

(stem or root of a tree form?)

Genus Diplostegium, Corda, Beytrage, p 712

Stem thick, tree-like, equal, round, marked with elevated scars, very near each other, and spirally; top of the elevated scars abruptly cut, rhomboidal.

Diplostegium Brownianum, Corda Beyt. p 112 t. 59 Lesq. Geol Penn 2 p 869

The only species

Ponent sandstone Summit Portage Penna

Genus Dyctopteris Gutb Lesq. Geol Penn 2 p 861

Frond bipinnate; pinnoe linearoblong; pinnules sessile, oval-oblong, slightly and equally cordate at the base, obtuse and oblique, or a little scytheshaped upwards; medial nerve disappearing above the middle; nervules much branching and reticulated by their diverging divisions.