OF WESTERN PENNSYLVANIA 205 



upper sheathing, truncate, rounded, entire, or lacerate at the 

 apex : capsule rather small, sub-sessile, usually only the ros- 

 trate calyptra and the conic lid emergent from the sheathing 

 perichsetial leaves when mature, about 2:1, more or less turgid- 

 oblong; lid reddish; peristome usually a bright coral color, the 

 inner peristome united at the apex and sometimes well down 

 towards the middle into a perfect lattice-work, the bars in- 

 complete below : spores mature in summer. 



In cool streams and in ponds, on stones or on wood; 

 Europe, Asia, northern Africa, and from Canada through the 

 United States to Alabama. Scarce in our region. 



Blair 



Cambria 



McKean 



T. P. James. (Porter's Catalogue). 

 T. P. James. (Porter's Catalogue). 

 D. A. Burnett. (Porter's Catalogue. 



2. Fontinalis biformis Sullivant. 



Yellowish green to dirty green : stems long, much-branch- 

 ing: leaves of two kinds; the vernal large, soft, lance-ovate, 

 concave, blunt to acute, when fresh and moist quite prominent- 

 ly three-ranked, and rather widely spreading; the summer 

 leaves much smaller, narrower, convolute and tubulose above, 

 rigid, covering the younger branches; median leaf-cells of the 

 vernal leaves linear, the apical broadly rhomboidal, the angular 

 quadrate-oblong, much larger, forming small decurrent 

 auricles ; costa none ; archegonial clusters rare, situated to- 

 wards the base of the stems ; antheridial clusters usually 2 

 to 4 together and long-stipitate : capsule oblong-oval, enfolded 

 by the perichsetial leaves ; lid conic, rostrate ; peristome-teeth 

 lance-linear, about 20-articulate, cilia tessellate and united at 

 the apex, papillose. 



In wood-land rivulets and streams ; from New England 

 to Florida and west to British Columbia, but not very com- 

 mon. Rare in our region. Portage County, Ohio, and : 



McKean : D. A. Burnett. (Porter's Catalogue). 



3. Fontinalis sullivantii Lindberg. 

 (F. lescnrii variety gracilescens Sullivant). 



Quite similar to F. lescurii but smaller and more slender : 

 very slender, regularly pinnate with remote and attenuate 

 branches ; leaves distant, the stem-leaves lanceolate, soft, narrowly 

 long-acuminate, somewhat concave, acute to somewhat 

 obtuse, entire or sub-denticulate, yellowish, about 

 5 mm. long ; the branch-leaves about half as long, 

 more rigid, more concave, acuminate ; perichaetial leaves rather 

 short as compared with F. lescnrii, not undulate at apex; median 

 leaf-cells linear-flexuous, the apical shorter and broader, the basal 

 shorter and broader, the alar much larger, inflated-oblong : cap- 

 sules sessile, cylindric ; lid conic, long-acuminate ; peristome teeth 



