1922] Bartram,—Some Nova Scotia Mosses 123 
Both of these varieties seem very close to R. sudeticum. The more 
simple stem and absence of short lateral branches in the latter species 
may be influenced to some extent by the habitat. "The distinguishing 
character is at best an unstable one and from a conservative point of 
view it would seem that all three forms might be conveniently grouped 
under A. heterostichum with varietal rank. 
Rhacomitrium microcarpum (Schrad.) Brid. Common on granite 
faces in Hants Co. and Halifax Co. 
Gymnostomum rupestre Schleich. Infrequent and sterile on gypsum 
ledges near Windsor. 
Barbula fallax Hedw. On gypsum rocks near Windsor. 
Tortula papillosa (Muell.) Wils. On shade trees in Windsor. 
Ulota crispa Brid. Common throughout the region. 
Ulota americana (Beauv.) Lindb. On shaded boulders along the 
lake shores. 
Ulota Ludwigii Brid. Frequent and often mixed with U. crispa. 
Aulacomnium androgynum Schwaegr. Found only on the ledges 
of the headlands of Cape Forchu, Yarmouth Co., where the slender 
deep green plants in dense cushions, very dark brown to blackish 
beneath, with numerous pseudopodia presented a striking combina- 
tion of field characters. 
Leptobryum pyriforme (L.) Wils. Crevices of gypsum rock near 
Windsor. 
Mnium hornum L. Frequent in Yarmouth Co. and freely fruiting. 
Pterigynandrum filiforme (Timm) Hedw.. In fine yellowish green 
mats on shaded granite ledges near Uniacke Lake. 
Hylocomium brevirostre (Ehrh.) B. & S. Shore of St. John Lake, 
Yarmouth Co. 
Climacium dendroides (L.) Web. & Mohr. Edge of swale at Went- 
worth gypsum quarries near Windsor. 
Campylium chrysophyllum (Brid.) Bryhn. Shaded gypsum ledges 
near Windsor. 
Campylium stellatum (Schreb.) Bryhn. Wet meadow bordering 
Brazil Lake, Yarmouth Co. 
Calliergon. stramincum (Dicks.) Kindb. Wet savannah bordering 
St. John Lake, Yarmouth Co. 
Leucodon sciuroides (L.) Schwaegr. Mixed with L. brachypus on 
old willow trees near Windsor. 
