BARNES NORTH AMERICAN MOSSES. 265 



dish; capsule small, erect, symmetric, ovate-oblong, scarcely constricted 

 under the orifice when dry; lid equaling sporangium, long and obliquely 

 subulate rostrate; peristome purple, teeth trabeculate, striolate lengthwise, 

 cleft to below the middle into 2-3 subulate legs, granulose and partly con- 

 nected; annulus very broad, deciduous, 2-3 rows of cells: male plants un- 

 known. Bot. Gaz. 19: 237. pi. 21. 1894. On the ground: Louisiana; Mo- 

 bile, Alabama. 



60. Dicranella Fitzgerald! Ren. & Card. Cespitose; yellowish or 

 dirty green: stems long, simple or bipartite: leaves crowded, sub-secund, 

 from a lanceolate base gradually narrowed into a long subulate canalicu- 

 late point, denticulate at the apex; costa broad, occupying y% of leaf -base 

 and nearly all of point; cells rectangular or sub-rectangular, firm, more or 

 less elongated: perichastial leaves from a dilated, sinuate-denticulate base 

 abruptly subulate, denticulate at apex: seta yellowish, long, twisted; cap- 

 sule erect, symmetric, oblong, not constricted under orifice, when dry 

 slightly plicate, brown or yellowish; lid convex, obliquely long rostrate; 

 teeth purple or orange, densely trabeculate, striolate lengthwise, faintly 

 granulose, cleft to below middle into two very long subulate legs, quite 

 free or partly connected: male flowers unknown. Bot. Gaz. 13: 197. pi. IS. 

 1888. On sandy ground: Palatka, Florida. 



61. Dicranella Howei Een. & Card. Closely related to D. varia: 

 stem longer: leaves more lax, longer, more flexuous, margin plane through- 

 out; costa broader, cells narrower: capsule longer and more slender, shin- 

 ing green. Revue Bryol. 20: 30. 1893. California. 



62. Dicranella laxiretis Ren. & Card. Closely related to D. debilis: 

 capsule narrower: leaves narrower and more flexuous, with a denticulate 

 apex; cells larger and shorter. Revue Bryol. 20: 30. 1893. Louisiana. 



63. Dicranella cerviculatula Kindb. (Labrador) and D. polaris 

 Kindb. (Alaska) are nomina nuda. 



64. Dicrannm hyperboreum (Gunn.) Smith. Resembling D. fulvel- 

 lum but more robust, cespitose: leaves patent and sub-secund, when dry 

 incurved, subflexuous, lanceolate and lanceolate-subulate from the lanceo- 

 late base, acumen nearly smooth; areolation dense: perichaetial leaves nar- 

 rowly aristate from the long sheathing base: capsule erect or subcernuous, 

 ovate or oval, neck inflated, substriate, when dry and empty cyathiform 

 and plicate; teeth of the peristome broader, short subulate, distinctly stri- 

 gose, 2-3 divided and perforated to the middle. Mull. Syn. Muse. 1: 372. 

 On rocks: Mt. Hood, Oregon. 



65. Dicranum hyperborenm papillosnm Ren. & Card. Leaves shorter, 

 deeply canaliculate, papillose on back; costa strongly rugose. Bot. Gaz. 14: 

 91. 1889. Disco, Greenland. 



65a. Dicrannm falcatnm Hendersoni Ren. & Card. Pedicel purple 



