139 
the teeth; spores about 15y, finely roughened, time of maturing 
variable, probably depending on season, autumn to early winter. 
Type locality, Lancaster, Penn. (Muhlenberg). 
On decaying wood, earth, moist rocks, bark of trees, etc. 
A very variable species and appropriately named ; found only 
in the eastern United States and Canada. Common in the Ap- 
palachian region from Canada to the Gulf; less frequent north- 
ward and not reported far west of the Mississippi. I have seen no 
specimens from northern New England or eastern Canada. 
Dallas, Texas (J. Boll); Missouri, Kansas, Wisconsin, Minne- 
sota, Ontario. 
IrrusrRATIONS.—Hedw. 1. c.; Sull. Icon. Musc. A. 92. 
ExsiccATi.—Drumm. Musc. Am. (S. States) 97, (JVeckera 
seductrix) ; Sull. Musc. Allegh. 78; Sull. & Lesq. Musc. Bor. Am. 
(Ed. 1) 261, (Ed. 2) 387; Macoun, Can. Musc. 663; Ren. & 
Card. Musc. Am. Sept. Exsic. go. 
2a. E. SEDUCTRIX LANCEOLATUS Grout, Bull. Torr. Club, 23 : 226. 
1896. 
Stem leaves ovate-lanceolate, acute; branch leaves broadly 
lanceolate, tapering gradually to the serrate acute apex; median 
cells 12: 1; capsule 3-5 mm. long, about 8: 1. 
On rotten wood, Hanging Rock, Wabash Co., Ill, April 3, 
1890. (J. Schneck.) 
2b. E. SEDUCTRIX MINOR (Aust.) Grout, 1l. c. 
Entire plant much reduced, dirty green; leaves, seta and cap- 
sule shorter than in type. Capsules 1.5—2 mm. long, its length 
about 3 times its diameter. 
Ohio (Sullivant); sand hill near Augusta, Ga. (J. D. Smith), 
Feb. 2, 1877. <A portion of no. 388 of Sull. and Lesq. Musc. 
Bor. Am., in Columbia Herb., issued as Cylindrothectum compres- 
sum Br. and Sch. is this variety. 
2c. E. SEDUCTRIX DEMETRII (Ren: & Card.) Grout, l. c. 
Cylindrothecium Demetrii Ren. & Card. Rev. Bryol. 20: 14. 
1893. 
Stems irregularly divided and branched, strongly complanate- 
foliate, slender, having almost exactly the facies of Æ. compressus ; 
