Jennings: Manual of Mosses — 29. Leskeaceae 201 



or 2/3 the length of the teeth; annulus double; spores mature in winter or 

 early spring. 



Mostly on shaded rocks, sometimes on trees; Europe, Algeria, Asia, and 

 in lower Canada and eastern United States south to Virginia. Occurs in 

 Pennsylvania at least as far west as Franklin County, and is to be looked 

 for in our region, particularly on calcareous habitats. 



4. Anomodon attenuatus [Schreber] Huebener 



(Leskea attenuata Hedwig; . HypnMw attenuatum Schreber) 



Plate XXXVIII 



Slender, loosely and widely tufted, with the secondary stems fasciculately 

 branched and with numerous slender flagelliform. branches; leaves spreading 

 to secund, concave, usually more or less distinctly homomallous when dry, 

 about 0.8-1.2 mm long, broadly lanceolate from an ovate base which is plainly 

 narrowed to the insertion, the insertion somewhat excavate and decurrent, the 

 apex acute and minutely apiculate and often with a very few teeth near the 

 apiculation, the leaf-margins plane below, and usually minutely crenulate by 

 reason of the projecting papillae; costa strong, ending a little below the apex; 

 areolation densely papillose on both sides, irregularly hexagonal to quadrate, 

 opaque, rather thin-walled, a few of the median basal elongate-rectangular to 

 oblong, pellucid; perichaetial leaves lance-acuminate from an ovate base: seta 

 about 2 cm long, twisted; capsule long, cylindric, straight or slightly curved, 

 lustrous; castaneous lid long-rostrate; teeth of peristome narrowly lanceolate; 

 segments filiform, irregular fragi'e, nearly as long as the teeth; annulus narrow; 

 spores macure in fall. 



On bases of trees, stumps, and rocks, in woods; Europe, Asia, and from 

 Newfoundland to British Columbia and south to Florida and Cuba. 



Common in our region but usually sterile. Known from 16 counties and probably 

 occurs in all. Specimen figured: Wildwood Hollow. Nov. 19, 1908. O.E.J. &: G.K.J. 



5. Anomodon rostratus (Hedwig) Schimper 



{Leskea rostrata Hedwig) 

 Plate XXXVIII 



Densely cespitose, tufts bright green above, yellowish inside: primary 

 stems slender, creeping, fasciculately branched with short, slender julaceous 

 secondary stems and branches; leaves densely-imbricate, ovate and concave at 

 base, narrowly lanceolate above with a long and hyaline piliferous acumina- 

 tion, more or less indistinctly two-ranked, the margin crenulate-papillose, often 

 recurved towards the middle; leaf-cells minute, chlorophyllose, opaque, 

 rounded-quadrate to oblong-hexagonal, pluri-papillose on both faces, the me- 

 dian marginal rounded-quadrate, about .008-.010 mm, the median interior 

 about as wide but more oblong, about 2:1, the median basal longer, hyaline 

 and non-papillose or but slightly so, the apical long and linear, smooth; costa 

 strong and ending a little below the apex; perichaetial leaves long, pale, ecos- 

 tate, the inner with a filiform and often reflexed point about as long as the 



