THE LICHEN FLORA OF THE SANTA CRUZ PENINSULA Il3 



clumps, erect or irregularly flexuous; irregularly much branched, 

 the branches mostly spreading, their axils usually cleft; densely 

 clothed to the summit with light green or brown squamules, these 

 often large, leafy, and lobulate; epidermis pale green or disappear- 

 ing, the color then variegated from ashy to pale reddish brown; 

 seldom cup-bearing with us, or the cups small, dilated, perforate, 

 with proliferous margins. 



Apothecia small or minute, numerous, flesh-brown to dark brown. 



On earth in woods on damp hillsides, and on the earth at Twin 

 Peaks, San Francisco. Generally distributed over North America 

 and found in all the continents. 



5. CLADONIA SUBSQUAMOSA (Nyl.) Wainio. 



Cladonia subsquamosa Nyl. ex Cromb. Journ. Linn. Soc. Bot. 17: 



560. 1880. 



Cladonia subsquamosa Wainio, Mon. Clad. Univ. 1 : 445. 1887. 

 Cladonia subsquamosa Fink, The Bryologist, 10: 23. 1907. 



Primary thallus of small, narrowed, often deeply cleft squamules, 

 the lobes pointed and more or less irregular; usually but little evident 

 or disappearing. KOH + , yellow and then crimson. 



Podetia arising from surface of squamules, slender, short to 

 medium or moderately long, more or less cylindrical; irregularly 

 branched or forked, sometimes simple; axils occasionally perforate 

 or the stems gaping; cups sometimes present, small, perforate; 

 apices subulate, slender, more often cup-bearing, perforate, or the 

 cups degenerate, gaping, with proliferate margin of short, slender, 

 rough branchlets; cortex rough- warty, ridged, or almost entirely 

 decorticate: more or less squamulose or the leafy lobules becoming 

 scaly, or entirely naked; from pale grayish or greenish to brownish, 

 becoming rather dark brown, especially in specimens dying basally. 



Apothecia numerous, small to medium, clustered at the tips of 

 the branches but not confluent, flat or convex; brown to very dark 

 brown. 



Abundant on earth in rock crevices in Pilarcitos Creek Canon, 

 two miles from the ocean. 



A rare plant. Recorded from France, Belgium, Switzerland, 

 North and South America, Australia, and New Caledonia. 



