OF WESTERN PENNSYLVAx\fIA 143 



Fayette : Ohio Pyle, May 30, 1902. J. A. S. ; Ohio 



Pyle, May 13, 1905, and June 14, 1908. 

 ,0. E. J. 



Indiana : Cush Gushing Creek, Cherry Tree, July 



11, 1908. O. E.J. 



Lawrence : Graceland Cemetery, New Castle, 1906. 



Miss Susan Gageby. 



Montour : Top of ^lontour Mt., July 17, 1908. O. 



E.J. 



McKean : Bradford, June 7, 1896, and Rutherford, 



June 19, 1896. D. A. B. 



Washington : Linn and Simonton. (Porter's Cata- 

 logue). 



Westmoreland : Chestnut Ridge, Hillside, May 23, 1908, 

 and May 22, 1909. O. E. J. 



3(/. Webera nutans var. triciliata New Variety. 



(Plate XVIII) 



Plants laxly to densely cespitose, shining, dark green to 

 yellowish : stem simple or sparsely branched, erect, castaneous, 

 at the base reddish-radiculose, about 6-15 mm. high; lower 

 Itaves short, about 0.5-1.0 mm. long, costate almost to the 

 apex, ovate, above the leaves becoming relatively longer and 

 ovate-lanceolate, denticulate towards the apex; upper leaves 

 clustered, erect-spreading, 2.5-4.0 mm. long, lanceolate, sub- 

 decurrent, denticulate at apex, acuminate, non-margined, 

 strongly percurrently to excurrently costate ; perichsetial leaves 

 elongate-lanceolate to linear, long-acuminate, denticulate at 

 apex, excurrently costate ; cells of the lower and median leaves 

 incrassate, above the middle oblong-hexagonal to rhomboidal, 

 about .010-01 5 X.O35-.065 mm. elongate-rectangular at base 

 where about .008-.020X.O4O-.100 mm.; cells of the comal and 

 perichaetial leaves incrassate, elongate to linear-prosenchyma- 

 tous, about .0O8-.OllX.04O-.O65 mm., towards the margin, 

 graduall}' narrower and there reaching .003-006 X 080-. 100 

 mm., at the base elongate-rectangular : inflorescence paroicous, 

 terminal ; antheridia in the axils of the comal leaves : pedicel 

 solitary, slender, lustrous, castaneous, erect (flexuous, about 

 4-6 cm. high ; capsule horizontal to sub-pendulous, smooth, 

 castaneous to yellowish-brown, ovate-oblong, often very slight- 

 ly curved, 2.5-3.5 mm. long, when dry and empty contracted 

 under the mouth, the basal third narrowed into a collum ; 

 exothecial cells incrassate, yellowish-pellucid, irregularly sub- 

 quadrate to oblong-hexagonal or elongate-rectangular, about 

 .025-035 X.035-.050 mm., in three to five rows under the mouth 

 abruptly smaller, sub-quadrate, somewhat opaque, and about 

 .006-.010X 012-018 mm. ; annulus broad, revoluble ; operculum 



