418 FLORA OF OXFORDSHIRE. 
B. cuspidatum, Sch. 
B. bimum, var. cuspidatum, Wils. 
Shady walls in damp situations; rare. June. Side of the Canal near 
Yarnton, 1861, A critical and difficult species. 
B. torquescens, Br. & Sch. 
Shady walls, banks, and rocks; rare. May, June. Bridges over the 
Canal near Wolvercote and Kirtlington, scarce. Very like B. capillare, 
but leaves scarcely twisted ; inflorescence different. 
B. erythrocarpum, Schwg. 
B. sangwinewm, Ludw. 
Sandy banks, heathy ground; rare. June, July. North side of Shot- 
over Hill with B. turbinatwm, very sparingly, 1883. This again is 
species of the moorlands. 
B. murale, Wils. 
Limestone walls and banks; rare. May, June. Banks of the Canal 
in two or three spots between Oxford and Kirtlington; old walls at 
Wheatley ; Cumnor and Hincksey, Berks. The deep red or dark purple 
capsules at once distinguish it from B. cespiticium, and it is somewhat 
smaller in all its parts. 
B. atropurpureum, W. & M. 
Walls, banks, roadsides ; frequent. April. Wychwood Forest ; Witney ; 
Islip; Noke; Elsfield; Iffey; Bessilsleigh, Cumnor, and Hincksey, 
Berks. Smaller and earlier than B. murale, 
B. cespiticium, Linn. 
Walls, roofs, banks; common. April, May. Sometimes takes posses- 
sion of a length of wall, when its numerous bright red fruitstalks are 
very conspicuous in the spring sunshine. Curious varieties now and then 
occur, resembling other species rather than ordinary ccespiticiwm in general 
aspect. 
B. argenteum, Linn. 
Walls, roofs, banks, etc.; common. November. Var. majus, rain 
spout, Friar’s Entry, 1860. Easily distinguished by its silvery-green 
colour. 
B. capillare, Linn. 
Walls, rocky banks, sides of woods, trunks of trees, thatched roofs ; 
common. May. Like other common species varying in size and aspect, 
according to situation. A thatched barn may sometimes be seen covered 
with it, and it then has a very striking appearance. 
B. pallens, Swartz. 
Wet banks and near springs or ditches. July. Rare with us. By 
the river near Godstow, and in the Canal bank in two or three places, 
