— 402 — 
current serrate at back. Capsule subapiculate; cells small; ca- 
lyptra covering half capsule, laciniate. Spores about 0,02 m. m. 
nearly smooth. Confounded with Ephemerum  crassinerve. -- 
On thin soil and rocks r. Amer. »U. S.»: Sulliv. 
2.E.hystrix Lindberg. — Ephemerum Lindb. manip. muscor. 2 
(Societ. pro flora et fauna fenn. 1874); Lesq. et Jam.; Ephe- 
meridium Kindb. (Ephemerum spinulosum Bruch et Sch. ?). 
»Leaves narrowly lanceolate-subulate, long-spinulose at mar- 
gins, open-erect or subsecund, not much passing capsule; costa 
percurrent nearly filliag the subulate point, spinulose at back. 
Capsule large very shortly conic-rostellate. Spores minutely 
tuberculate very large. — Amer. r. U. S.: Louisiana»: Lindb. 1. c. 
Fam. 36. Voitiaceæ. 
166. Voitia Hornschuch. 
1.V.nivalis Hornschuch. 
Leaves distant long-acuminate not recurved; cells oblong- 
hexagonal or subrectangular; costa gen. long-excurrent, in up- 
permost leaves sometimes not excurrent. Capsule subovate- 
oblong; pedicel thick 2—3 c. m. long. Perichetial leaves ob- 
tusate; costa long-excurrent. Spores small. Tufts tomentose 
3—8 c. m. high. — On animal dung in alp. region r, Eur. 
Austria: Breidler. 
2. V.hyperborea Greville et Arnott. UT 
Differs from the last: Leaves broad-ovate obtusate gen. api- 
culate; costa percurrent or short-excurrent, Shoot-leaves small 
obovate; costa vanishing far below the short point. Capsule 
subglobose smaller, sometimes shorter rostrate; pedicel thin less _ 
long. Stems us. not tufted. Perichetial leaves not seen. — _ 
Arctic distr. r. Eur, Spetsbergen: R. Gyllencreutz. 
Fam. 37. Physcomitrellaceæ. 
167. Physcomitrella Bruch et Schimper. br 
1.Ph.patens Hedwig. — Phascum H.; Physcomitrella B. S. 
Leaves sublingulate or sublinear acute or short-acuminate; 
costa. subpereurrent. Capsule apiculate; pedicel more or less 
distinct. Stem us. simple. -— Wet clayey soil. Hur. not r. 
Sweden! Finl: Bomansson. France: Brébisson. | Amer. »U. S.» D 3 
Lesq. et Jam. 
168. Aphanorhegma Sullivant. eiu ee 
1.A.serratum Hooker et Wilson. — Schistidium H. W.; Apha- 
norhegma Sull, icon. m. mob 
Leaves: linear-lanceolate gen. with long subulate acumen; costa 
