350 Ingham: Mosses and Hepatics of Skipwith Common. 
Sphagnum cuspidatum Ehrh. 
Sphagnum cuspidatum v. falcatum Russ. 
TETRAPHIDACE. 
Tetraphis pellucida Hedw. 
POLYTRICHACEZ. 
Polytrichum nanum Neck. 
Polytrichum gracile Dicks. 
Polytrichum commune L. 
DICRANACEE, 
Ceratodon purpureus Brid. 
Dicranella heteromalla Schp. 
Dicranella cerviculata Schp. 
Campylopus flexuosus Brid. forma. 
Campylopus flexuosus v. paradoxus Husn. 
Campylopus pyriformis Brid. c.fr. forma. 
Campylopus pyriformis Brid. c.fr. type. 
Campylopus fragilis B.&S. 
Campylopus brevipilus B.&S. 
The C. flexuosus forma and the C. pyriformis forma are two 
very interesting mosses, as showing the nearer relationship of 
the two species than we have been accustomed to assign to 
them. The C. flexuosus formi was growing on a wet knoll 
in the midst of an extensive marsh, and unapproachable except 
after very dry weather. It has only fairly well defined auricles 
in a transition stage, but this feature places it nearer C. flexuosus 
than C. pyriformis. 
The C. pyriformis forma has the habit, tomentose stems, etc-, 
of C. flexuosus, but, on the whole, is nearer C. pyriformis. If 
we are to admit sub-species, then C. pyriformzs would seem to 
be most at home as a sub-species of C. flexuosus. 
Dicranum bonjeani De Not. 
Dicranum bonjeani v. rugifolium Bosw. 
Dicranum spurium Hedw. 
Leucobryum glaucum Schp. 
FISSIDENTACE. 
Fissidens adiantoides Hedw. c.fr. 
Naturalist, ; “ee 
