362 BULLETIN OF THE UNIVERSITY OP WISCONSIN. 



bright green, dark variegated: stems long, creeping, more or less regularly 

 pinnate. 1. c. — Miquelon Island. 



575. Hypnum Patieutiai Americanum Ren. & Card. — Stems slender, 

 prostrate, more or less distinctly pinnate: leaves smaller, with acumen 

 shorter and broader. Bot. Gaz. 14: 99. 1889. — On decayed wood and 

 sandy ground: Louisiana. 



576. Hypnuin arcuatiforme Kindb. — Tufts dense, green, not glossy: 

 stem creeping, sub-pinnate: leaves arcuate, ovate lanceolate, generally short- 

 acuminate or sub-obtuse, entire, decurrent, not striate; alar cells large, 

 well defined, orange, others pale and narrow; costa none or short and 

 double: capsule sub-cylindrical, curved, not striate nor furrowed, constricted 

 below the wide mouth, teeth when dry incurved, pale yellow, hyaline mar- 

 gined; cilia long, appendiculate: probably dioicous. Mac. Cat. 238. — On 

 earth near Ottawa, Ont. 



577. Hypnuin Dieckii Ren. & Card. — Tufts yellowish or rufescent-. 

 stem depressed, pinnate; branches ascending: leaves f alcate-secund , 

 strongly circinate, from broadly ovate base suddenly acuminate, acute or 

 subulate; margin plane, entire, rarely obsoletely denticulate above; costa 

 double, short, sometimes very faint or prolonged to middle; cells linear, 

 very narrow, obtuse, alar large, strongly inflated, hyaline or flavescent; 

 perichtetial leaves oblong-lanceolate, long acuminate, sub-entire, ecostate: 

 dioicous: capsule horizontal or sub-pendulous, large, arcuate; lid unknown; 

 teeth yellowish, strongly trabeculate, segments narrow, scarcely perfor- 

 ated along middle; cilia 2, nodulose. Bot. Centralbl. 44:423. 1890. 

 Oregon. 



578. Hypiium psendo-pratense Kind.— Nearly allied to H. jiratense: 

 tufts more compact: branches radiculose below: leaves more crowded, not 

 decurrent, more distinctly denticulate near apex: inflorescence monoicous: 

 capsules not found. Mac. Cat. 239.— On old logs in woods: Ontario. 



579. Hypiium Haldaniaiium Roellii Ren. & Card.— Branches short, 

 interwoven, leaves short and broad acuminate, areolation dense. Bot. Cen- 

 tralbl. 44: 424. 1890.— Tree trunks: Indiana. 



580. Hypnum flaccum C, M. & Kindb.— Tufts large and loose, brown 

 below, pale green above: stems pinnate, sparingly radiculose, red-brown; 

 branches elongate, attenuate, distant and flaccid; paraphyllia few, multi- 

 form: leaves oblong-lanceolate, shortly subulate-acuminate, not curved, 

 concave-involute, patent, with excavate dark orange auricles at base; stem 

 leaves decurrent, slightly recurved at basal angles; branch leaves loose, 

 sub-distichous, not decurrent nor recurved; cells narrow, long linear, not 

 chlorophyllose, alar large, sub-quadrate, inner basal narrow, pale orange; 

 costa short, double and indistinct or none: barren. Mac. Cat. 240. — On 

 old logs or rocks: New Brunswick; Ontario. 



