Jennings: Manual of Mosses — 15. Mniaceae 141 



creasing in size towards the costa: synoicous: capsules clustered, occasionally 

 single, on erect stout setae, pendent, oblong; operculum convex, rostrate-apicu- 

 late: mature in May. 



Mostly on wet rocks and shaded damp earth and logs; cooler Europe and 

 Asia, and, in North America, from Greenland to Alaska and south to New 

 Jersey, Pennsylvania, Minnesota, Idaho to California. 



Armstrong Co.: Ravine, west bank of Allegheny River, 1 mi. north of Foxburg. 

 June 10, 1934. Chas. M. Boardman. Beaver Co.: South branch, Brady Run, 3 mi. 

 west of Fallston. Jan. 28, 1934. Charles M. Boardman. Butler Co.: On wet rocks, 

 Sawmill Run, Butler Twp. Nov. 4, 1934. Sidney K. Eastwood. McKean Co.: On 

 leaf-mold, etc., at headwaters of Marilla Brook in wet, springy places, September 24. 

 18Q4 (figured), West Branch Swamp, May 26. 1895, Bradford, November 2, 1898. All 

 D.A.B. 



9. Mnium affine Blandow, Schwaegrichen 



(Astrophyllum cuspidatum Lindberg) 



As Grout points out in his "Mosses v/ith Hand-lens and Microscope," 

 the true Mnium ajfine Blandow is rare in eastern United States. Andrews, 

 in Grout's Moss Flora, regards M. affine as so variable as to make it impos- 

 sible to distinguish the various published varieties. It has the capsules usually 

 clustered, 2-4 together, and the teeth of the leaves shorter than in the variety 

 ciliare. Its general range is Europe, Asia, and North America south to New 

 Jersey, West Virginia, and Washington. 



Now known from Erie. Forest, and Washington counties. Specimens figured: In ravine, 

 Snake Woods near Washington, May 6, 18934 and Nov. 11, 1893. A. Linn and J. S. 

 Simonton. 



9a. Mnium affine var. ciliare (Greville) C. Mueller 



{Astrophyllum ciliare Lindberg; Bryum cilure Greville) 

 Plate XXVI 



Moderately large, loosely cespitose, pale to dark green with age: stems 

 erect, usually about 3 cm high, reddish-brown, rather stout, radiculose below, 

 with long, slender sterile shoots which are prostrate or arched; stem-leaves 

 ovate, varying to oblong-elliptic or at the apex rosulate and obovate to narrow 

 spatulate, somewhat acute, apiculate, up to 6-10 mm long, decurrent, margined, 

 serrate down to the narrowed base v/ith long slender teeth of 2-4 cells; costa 

 excurrent-apiculate, strong; leaf-cells large, .020-040 (-.070) mm in diameter, 

 angled, somewhat incrassate, hexagonal to irregularly somewhat elongate rectan- 

 gular, especially towards the base, hardly collenchymatous, marginal cells 

 prosenchymatous-linear and cartilaginous pellucid, often yellowish to reddish: 

 seta single, erect flexuous, strong, reddish, about 2.5 cm long; capsule pendent, 

 elliptic-oblong, about 4 mm Icna, narrov/ed to a short drrker c'^rer' neck, 

 yellowish-brov/n; lid conic-apiculate; peristome teeth pale pellucid, strongly 

 trabeculate, the divisural rather faint, finely papillose above; inner peristome 

 brownish pellucid, the basal membrane reaching about half-way, non- fenestrate, 

 the segments and usually three cilia finely papillose above and often exceeding 

 the teeth; spores round, yellowish-pellucid, finely papillose, about .028-.030 mm; 

 dioicous; nntheridial flower terminal-discoid; mature in May. 



