lOO COiXNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Dicranum Hedw. 



1. Capsule cernuous, arcuate 2 



Capsule erect, symmetrical S 



2. Leaves not undulate^ midrib percurrent D. scoparium 



Leares transversely undulate, midrib not reaching apex. ... 3 



3. Upper leaf cells elongated; capsules clustered. . .D. undulatum 

 Upper leaf cells isodiametric; capsules borne singly 4 



4. Upper part of leaves strongly papillose at back. . . .D. spurium 

 Leaves smooth at back D. Bergeri 



5. Lamina of leaves more or less bistratose in upper part. . . . 



D. fulvum 

 Lamina unistratose throughout 6 



6. Midrib without median guides and excurrent; leaves sud- 



denly narrowed into a long setaceous point.. D. longifolium 

 Midrib with median guides and vanishing below apex of 

 leaf; leaves lanceolate-subulate 7 



7. Cells in upper part of leaves rectangular, papillose at back; 



plants not producing flagelliform branchlets. .D. montanum 

 Cells in upper part of leaf less regular, smooth at back; 

 plants frequently characterized by numerous flagelliform 

 branchlets D. flagellare 



Dicranum spurium Hedw. 



Shaded sandy soil and rocks, never on limestone. June. 

 Litchfield : Salisbury, Nichols. New Haven : New Haven 

 (1881), /, A. Allen. New London: Ledyard, SetchelL* 



Newfoundland to Wisconsin, south to Florida; Europe; 

 Asia. 



Exsic. Holzinger, Musci Aero. Bor.-Amer. No. 228''. 



Dicranum undulatum Ehrh. 



Moist soil and earth-covered rocks in hilly woods. Sum- 

 mer. Litchfield: New Milford, Nichols; Salisbury, Miss 

 Lorens. Hartford: West Hartford, Miss Lorens. New 

 Haven: East Haven (1855), Eaton; Meriden, Nichols; 

 Woodbridge, /. A. Allen. Middlesex: Killingworth, Nichols. 



Canada and the northern United States ; Europe ; Asia. 



R[:f. Eaton, 15, 61. 



♦Reported by Barron from " near the Sound " (I'^aton, 15, 61). 



