llriHilinrnf Sorll, Amrrin,. ()1 



<). F. Macouni Aust. Stems thickened, very short, 

 leaves imhritate, str()ii<2:ly cristate-undnlate and plicate, acutely 

 incised-dentate; inner involucre small, cup-shaped or funnel- 

 shaped, the mar<^in crenate and somewhat undulate; capsule 

 large, exserted; spores very small, somewhat opaque, minutely 

 and closely pa])illose; elaters rather thick, bispiral. 



Hah. — Portage la Loclis, lat. 57° Canada {Macoun). 

 Bib.— Boi- Bulletin (now Bot. Gazette) I, 36. 



VII. FRULLANIA Kaddi. 



DioH-ioiis. S])()n)i;()iiiinn terminal on the branches, liivo- 

 lucral leaves 2 or 4, 2-lobed, not auriculate. Inner involucre 

 oval or obovate, terete or 3-4-angled, mucronate at the apex by 

 a tulnilar mouth. Calyptra pear-shaped, persistent, rupturing 

 below the apex. Capsule globular, 4-cleft halfway down. 

 Elaters truncate at both ends, unispiral, adherent to the valves, 

 erect. Spores large, irregular, minutely muricate. Archego- 

 nia 2 or 4. Antheridia in the saccate base of closely imbricate, 

 2-lobed perigonial leaves. Leaves 2-lobed, the lower lobe usu- 

 ally an inflated helmet-shaped auricle. Amphigastria entire or 

 2-toothed, throwing out rootlets from the base. Named for 

 Sitj. Jjcoiuinli) Ffii!I(iiu\ an Italian minister of state. 



* AnricJcs (jftleate or ciicuJlate-rotund. 



f Am j)hi(ja stria sttndl, scarcely iridcr than the stem. 



^ .Vo tooth oil the margin of the involncral leaves. 



a. Aiirlcirs much smaller tJuni the leaves. 



1. F. Eboracensis (Tottsche. Stems creeping, clus- 

 tered-branched; leaves loosely disposed (those of the branches 

 imbricate), round-ovate, entire: amphigastria ovate, a little 

 wider than the stem, bifid, entire; inner involucre smooth, 

 pyriform, slightly compressed and repand, beneath obscurely 

 carinate and gibbous toward the apex. (F. saxatilis Lindenb.. 

 F. microxcyplia., liev'iscijpha et nana Tayl.) 



JJdl). — Trees and rocks; common northward. 



rrih.- -Syn. Hep. p. 423. 



7u-.siV.— Hop. B()r.-.\iiKT. No. 105. 



