312 A MANUAL OF MOSSES 



On the ground in woods and wet, grassy places in swamps, 

 around springs, etc. ; Europe, Asia, and from Arctic America 

 to the northern United States and south in -the east to Florida. 

 Fairly common in our region. 



Allegheny : Along Brush Creek, near Douthett, April 



26, 1908. O. E. J. 

 Armstrong : Kittanning, May 28, 1907. O. E. J. (Fig- 

 ured). 

 Lawrence : Springy places along roadside. East 



Brook, August 30, 1906. O. E. J. 

 McKean : Bolivar, June 7, 1898. D. A. B. 



^^'ashington : Wet clay bank, Bellevernon, May 21, 1907. 

 O. E. J. 



7. Stereodon pratensis (Koch) Warnstorf. 

 (Hypniim pratense Koch; Isopterygium pratense Lindberg). 



Softly and flatly cespitose, bright green, complanately 

 flattened : stems prostrate to sub-erect, non-radiculose, irreg- 

 ularly sub-pinnate, branchlets rather sparse; leaves sub- 

 secund on the larger branches and on the stems, plane to some- 

 what concave, entire ; costa double and very faint and short ; 

 median leaf-cells narrowly rhomboid-vermictilar, at the angles 

 large and inflated, usually colored, the alar enlarged, fewer, 

 less enlarged and less differentiated than in 5. patentiae; peri- 

 chaetial leaves plicate, the inner long-lanceolate and shortly 

 acuminate : pedicel long, twisted in two directions ; capsule 

 non-plicate, oblong to turgid-ovate, cernuous, ■ arcuate when 

 dry ; lid convex-conic ; annulus 3-seriate ; peristome normally 

 hypnoid, the cilia 3, about as long as the segments; spores 

 mature in spring. The capsules are rarely produced. 



In open swamps and marshy meadows ; Europe, Asia, and 

 from Arctic America to Florida. Only once reported for our 

 region. 



Cambria : ^^'iltmore. T. P. James. (Porter's Cata- 



logue). 



8. Stereodon haldanianus (Greville) Lindberg. 



(Hypniun haldaniamiiii Greville; H eterophyllon baldani Kind- 

 berg; Hypnum pulchrum Hooker). 



(Plate XLVI) 

 \Mdely and loosely cespitose, dark to brownish-green : stems 

 long, creeping, irregularly pinnate, the branchlets unequal and 

 disposed much as in some of the Brachytheciae; leaves loosely 

 and more or less evenly imbricate to loosely spreading; stem- 

 leaves usually slightly decurrent, about 0.7-1.5 mm. long, ob- 

 long-ovate to somewhat lanceolate, rapidly narrowed to a 

 short and acute apex, entire, plane-margined, concave ; branch- 



