462 baker's north YORKSHIRE. 
4. O. CPispatus (Dicks.). Lindb. 
{Rhabdonoeissia dentictdata B. et S.). 
Montane A. Range 2. 
Crevices of sub-alpine rocks, rare. 
Above Hig^h Force, on basaltic rock by the Tees 
(M.B.S. 1853). 
Unthank Scars, and Falcon Clints, Teesdale (Barnes. 1890). 
Fruiting- 6-7 mths. 
5. O. striatus (Schrad.). Lindb. 
{Rhabdoweissia fugas^ B. et S.). 
Montane A. Rang-e 2. 
Fissures of rocks in sub-alpine districts, rare. 
Holwick Scar, Teesdale (Slater and Anderson, 1853). 
Cronkley Scar, Upper Teesdale (Barnes. 1890). 
Fruiting 6-7 mths. 
Ceratodun BHdel. 
1. C. puppureus (L.). Brid. 
B. C. Rang-e 1-3. 
Common upon heaths especially in places where the 
heather has been burnt and on gravelly soil, on walls and 
rocks. 
Ascending from the Central Valley to the upper zone 
peaks (Baker). 
Fruiting 4-5 mths. 
Var. brevifolius, Milde. 
Coatham Marshes (Ingham). 
2. C. conicus (Hampe.). Lindb. 
C. Range i. 
Walls and waste ground, rare or overlooked. 
Near Hackness, fruiting (W. Ingham, 1897). 
