Hep<(tica' of Notih Aiuerica. 03 



5. F. Pennsylvanica Stepbani. Dioecious; stems creep- 

 ing, dichotomous-brancliing; leaves imbricate, plane, ovate, 

 niucronate, more rarely obtuse, entire; cells cbarged with chlo- 

 rophyll, smaller toward the base, much dilated at the base, 

 more or less regularly hexagonal, thick walled; auricles naked, 

 rising from the margin of the leaves, large, cucullate-rotund, 

 slightly contracted beneath the hood, extending beyond the 

 margin of the leaves; amphigastria subimbricate, plane, broadly 

 ovate, exceeding the stem, deeply parted with a narrow obtuse 

 sinus, the laciniae ovate, long acuminate, connivent; male spikes 

 on short lateral branches, elongate, with loose foliage; involu- 

 cral leaves complicate, entire, the lobes ovate, acuminate, much 

 narrowed at the base; involucral amphigastrium large, carinate- 

 concave, deeply parted, the laciniag ovate apiculate, entire or 

 with one or more teeth. 



Hab. — In rocky places in shade ; Stony Creek, Carbon Co., Penn. 

 (Eau.) 



Bib.— Uedwigia, No. 10, 1883 r Torrey Bull. X, 132. 



<). F. Hallii Aust. Stems prostrate, much branched at 

 the apex, often erect, flagelliferous, with dense squarrose am- 

 phigastria; fruit-bearing branches short, clavate, ascending: 

 leaves small, subdistant or subimbricate, obliquely ovate-rotund, 

 strongly convex, the apex incurved, the auricle rather large, 

 oval-rotund, contiguous to the stem; amphigastria scarcely 

 wider than the stem, obovate-quadrate, slightly bilobed; inner 

 involucre broadly obovate, somewhat compressed, dorsally 2- 

 nerved toward the apex, ventrally 4-nerved, unicarinate; invo- 

 lucral leaves repand-subdentate, the amphigastria ovate or ro- 

 tund, entire or barely emarginate at the apex, the margins 

 entire or obtusely dentate. 



Hab.— On trees ; Salem, Ore. {E. Hall). 

 Bib.— Torrey Bull. VI, p. 20. 



7. F. Bolanderi Aust. Stems creeping, clustered 

 branching, flagelliferous, the fruit-bearing brancb erect-as- 

 cending, clavate; leaves small, imbricate, obliquely orbicular, 

 convex, margined, the basal auricle large orbicular-galeate; 

 amphigastria somewhat spreading, minute, orbicular or subolio- 

 vate, bifid, the lobes obtusQ or somewhat acute, entire, repand- 



